InPortBase.cpp

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// -*- C++ -*-
#include <algorithm>
#include <iterator>

#include <rtm/CORBA_SeqUtil.h>
#include <rtm/NVUtil.h>
#include <rtm/InPortBase.h>
#include <rtm/CdrBufferBase.h>
#include <rtm/InPortProvider.h>
#include <rtm/OutPortConsumer.h>
#include <rtm/InPortPushConnector.h>
#include <rtm/InPortPullConnector.h>

namespace RTC
{

  InPortBase::InPortBase(const char* name, const char* data_type)
    : PortBase(name), m_singlebuffer(true), m_thebuffer(0), m_littleEndian(true)
  {
    RTC_DEBUG(("Port name: %s", name));

    // PortProfile::properties ¤òÀßÄê    RTC_DEBUG(("setting port.port_type: DataIntPort"));
    addProperty("port.port_type", "DataInPort");

    RTC_DEBUG(("setting dataport.data_type: %s", data_type));
    addProperty("dataport.data_type", data_type);

    addProperty("dataport.subscription_type", "Any");
  }
  
  /*!
   * @if jp
   * @brief ¥Ç¥¹¥È¥é¥¯¥¿
   * @else
   * @brief Destructor
   * @endif
   */
  InPortBase::~InPortBase()
  {
    RTC_TRACE(("~InPortBase()"));
    
    if (m_connectors.size() != 0)
      {
        RTC_ERROR(("connector.size should be 0 in InPortBase's dtor."));
        for (int i(0), len(m_connectors.size()); i < len; ++i)
          {
            m_connectors[i]->disconnect();
            delete m_connectors[i];
          }
      }
    
    if (m_thebuffer != 0)
      {
        CdrBufferFactory::instance().deleteObject(m_thebuffer);
        if (!m_singlebuffer)
          {
            RTC_ERROR(("Although singlebuffer flag is true, the buffer != 0"));
          }
      }
    
  }

  /*!
   * @if jp
   * @brief ¥×¥í¥Ñ¥Æ¥£¤Î½é´ü²½
   * @else
   * @brief Initializing properties
   * @endif
   */
  void InPortBase::init(coil::Properties& prop)
  {
    RTC_TRACE(("init()"));
    RTC_PARANOID(("given properties:"));
    RTC_DEBUG_STR((prop));

    // merge properties to PortProfile.properties
    m_properties << prop;
    NVList nv;
    NVUtil::copyFromProperties(nv, m_properties);
    CORBA_SeqUtil::push_back_list(m_profile.properties, nv);
    RTC_PARANOID(("updated properties:"));
    RTC_DEBUG_STR((m_properties));

    if (m_singlebuffer)
      {
        RTC_DEBUG(("single buffer mode."));
        m_thebuffer = CdrBufferFactory::instance().createObject("ring_buffer");
        if (m_thebuffer == 0)
          {
            RTC_ERROR(("default buffer creation failed"));
          }
      }
    else
      {
        RTC_DEBUG(("multi buffer mode."));
      }

    initProviders();
    initConsumers();
    int num(-1);
    if (!coil::stringTo(num, 
                     m_properties.getProperty("connection_limit","-1").c_str()))
      {
        RTC_ERROR(("invalid connection_limit value: %s", 
                   m_properties.getProperty("connection_limit").c_str()));
      }

    setConnectionLimit(num);
  }
  
  /*!
   * @if jp
   * @brief ¥×¥í¥Ñ¥Æ¥£¤ò¼èÆÀ¤¹¤ë
   * @else
   * @brief Get properties
   * @endif
   */
  coil::Properties& InPortBase::properties()
  {
    RTC_TRACE(("properties()"));
    
    return m_properties;
  }

  /*!
   * @if jp
   * @brief Connector ¤ò¼èÆÀ
   * @else
   * @brief Connector list
   * @endif
   */
  const std::vector<InPortConnector*>& InPortBase::connectors()
  {
    RTC_TRACE(("connectors(): size = %d", m_connectors.size()));
    return m_connectors;
  }

  /*!
   * @if jp
   * @brief ConnectorProfile ¤ò¼èÆÀ
   * @else
   * @brief ConnectorProfile list
   * @endif
   */
  ConnectorInfoList InPortBase::getConnectorProfiles()
  {
    RTC_TRACE(("getConnectorProfiles(): size = %d", m_connectors.size()));
    ConnectorInfoList profs;
    for (int i(0), len(m_connectors.size()); i < len; ++i)
      {
        profs.push_back(m_connectors[i]->profile());
      }
    return profs;
  }

  /*!
   * @if jp
   * @brief ConnectorId ¤ò¼èÆÀ
   * @else
   * @brief ConnectorId list
   * @endif
   */
  coil::vstring InPortBase::getConnectorIds()
  {
    coil::vstring ids;
    for (int i(0), len(m_connectors.size()); i < len; ++i)
      {
        ids.push_back(m_connectors[i]->id());
      }
    RTC_TRACE(("getConnectorIds(): %s", coil::flatten(ids).c_str()));
    return ids;
  }

  /*!
   * @if jp
   * @brief Connector¤Î̾Á°¤ò¼èÆÀ
   * @else
   * @brief Connector name list
   * @endif
   */
  coil::vstring InPortBase::getConnectorNames()
  {
    coil::vstring names;
    for (int i(0), len(m_connectors.size()); i < len; ++i)
      {
        names.push_back(m_connectors[i]->name());
      }
    RTC_TRACE(("getConnectorNames(): %s", coil::flatten(names).c_str()));
    return names;
  }

  /*!
   * @if jp
   * @brief Connector¤òID¤Ç¼èÆÀ
   * @else
   * @brief Getting Connector by ID
   * @endif
   */
  InPortConnector* InPortBase::getConnectorById(const char* id)
  {
    RTC_TRACE(("getConnectorById(id = %s)", id));

    std::string sid(id);
    for (int i(0), len(m_connectors.size()); i < len; ++i)
      {
        if (sid  == m_connectors[i]->id())
          {
            return m_connectors[i];
          }
      }
    RTC_WARN(("ConnectorProfile with the id(%s) not found.", id));
    return 0;
  }

  /*!
   * @if jp
   * @brief Connector¤ò̾Á°¤Ç¼èÆÀ
   * @else
   * @brief Getting ConnectorProfile by name
   * @endif
   */
  InPortConnector* InPortBase::getConnectorByName(const char* name)
  {
    RTC_TRACE(("getConnectorByName(name = %s)", name));

    std::string sname(name);
    for (int i(0), len(m_connectors.size()); i < len; ++i)
      {
        if (sname  == m_connectors[i]->name())
          {
            return m_connectors[i];
          }
      }
    RTC_WARN(("ConnectorProfile with the name(%s) not found.", name));
    return 0;
  }

  /*!
   * @if jp
   * @brief ConnectorProfile¤òID¤Ç¼èÆÀ
   * @else
   * @brief Getting ConnectorProfile by name
   * @endif
   */
  bool InPortBase::getConnectorProfileById(const char* id,
                                            ConnectorInfo& prof)
  {
    RTC_TRACE(("getConnectorProfileById(id = %s)", id));
    InPortConnector* conn(getConnectorById(id));
    if (conn == 0)
      {
        return false;
      }
    prof = conn->profile();
    return true;
  }

  /*!
   * @if jp
   * @brief ConnectorProfile¤ò̾Á°¤Ç¼èÆÀ
   * @else
   * @brief Getting ConnectorProfile by name
   * @endif
   */
  bool InPortBase::getConnectorProfileByName(const char* name,
                                              ConnectorInfo& prof)
  {
    RTC_TRACE(("getConnectorProfileByName(name = %s)", name));
    InPortConnector* conn(getConnectorByName(name));
    if (conn == 0)
      {
        return false;
      }
    prof = conn->profile();
    return true;
  }


  /*!
   * @if jp
   * @brief InPort¤ò activates ¤¹¤ë
   * @else
   * @brief Activate all Port interfaces
   * @endif
   */
  void InPortBase::activateInterfaces()
  {
    RTC_TRACE(("activateInterfaces()"));
    
    for (int i(0), len(m_connectors.size()); i < len; ++i)
      {
        m_connectors[i]->activate();
        RTC_DEBUG(("activate connector: %s %s",
                   m_connectors[i]->name(),
                   m_connectors[i]->id()));
      }
  }

  /*!
   * @if jp
   * @brief Á´¤Æ¤Î Port ¤Î¥¤¥ó¥¿¡¼¥Õ¥§¡¼¥¹¤ò deactivates ¤¹¤ë
   * @else
   * @brief Deactivate all Port interfaces
   * @endif
   */
  void InPortBase::deactivateInterfaces()
  {
    RTC_TRACE(("deactivateInterfaces()"));

    for (int i(0), len(m_connectors.size()); i < len; ++i)
      {
        m_connectors[i]->deactivate();
        RTC_DEBUG(("deactivate connector: %s %s",
                   m_connectors[i]->name(),
                   m_connectors[i]->id()));
      }
  }

  /*!
   * @if jp
   * @brief ConnectorDataListener ¥ê¥¹¥Ê¤òÄɲ乤ë
   *
   * ¥Ð¥Ã¥Õ¥¡½ñ¤­¹þ¤ß¤Þ¤¿¤ÏÆɤ߽Ф·¥¤¥Ù¥ó¥È¤Ë´ØÏ¢¤¹¤ë³Æ¼ï¥ê¥¹¥Ê¤òÀßÄꤹ¤ë¡£
   *
   * @else
   * @brief Adding ConnectorDataListener type listener
   *
   * @endif
   */
  void InPortBase::
  addConnectorDataListener(ConnectorDataListenerType type,
                           ConnectorDataListener* listener,
                           bool autoclean)
  {
    if (type < CONNECTOR_DATA_LISTENER_NUM)
      {
        RTC_TRACE(("addConnectorDataListener(%s)",
                   ConnectorDataListener::toString(type)));
        m_listeners.connectorData_[type].addListener(listener, autoclean);
        return;
      }
    RTC_ERROR(("addConnectorDataListener(): Invalid listener type."));
    return;
  }

  void InPortBase::
  removeConnectorDataListener(ConnectorDataListenerType type,
                              ConnectorDataListener* listener)
  {
    if (type < CONNECTOR_DATA_LISTENER_NUM)
      {
        RTC_TRACE(("removeConnectorDataListener(%s)",
                   ConnectorDataListener::toString(type)));
        m_listeners.connectorData_[type].removeListener(listener);
        return;
      }
    RTC_ERROR(("removeConnectorDataListener(): Invalid listener type."));
    return;
  }
  
  /*!
   * @if jp
   * @brief ConnectorListener ¥ê¥¹¥Ê¤òÄɲ乤ë
   *
   * @else
   * @brief Adding ConnectorListener type listener
   *
   * @endif
   */
  void InPortBase::addConnectorListener(ConnectorListenerType type,
                                         ConnectorListener* listener,
                                         bool autoclean)
  {
    if (type < CONNECTOR_LISTENER_NUM)
      {
        RTC_TRACE(("addConnectorListener(%s)",
                   ConnectorListener::toString(type)));
        m_listeners.connector_[type].addListener(listener, autoclean);
        return;
      }
    RTC_ERROR(("addConnectorListener(): Invalid listener type."));
    return;
  }
  
  void InPortBase::removeConnectorListener(ConnectorListenerType type,
                                            ConnectorListener* listener)
  {
    if (type < CONNECTOR_LISTENER_NUM)
      {
        RTC_TRACE(("removeConnectorListener(%s)",
                   ConnectorListener::toString(type)));
        m_listeners.connector_[type].removeListener(listener);
        return;
      }
    RTC_ERROR(("removeConnectorListener(): Invalid listener type."));
  }

  /*!
   * @if jp
   * @brief endian ÀßÄ꤬little¤«Èݤ«ÊÖ¤¹
   * @else
   * @brief return it whether endian setting is little
   * @endif
   */
  bool InPortBase::isLittleEndian()
  {
    return m_littleEndian;
  }

  /*!
   * @if jp
   * @brief [CORBA interface] Port ¤ÎÀܳ¤ò¹Ô¤¦
   * @else
   * @brief [CORBA interface] Connect the Port
   * @endif
   */
  ReturnCode_t InPortBase::connect(ConnectorProfile& connector_profile)
    throw (CORBA::SystemException)
  {
    RTC_TRACE(("InPortBase::connect()"));

    // endian infomation check
    CORBA::Long index(NVUtil::find_index(connector_profile.properties,
                                       "dataport.serializer.cdr.endian"));
    if (index < 0)
      {
        RTC_TRACE(("ConnectorProfile dataport.serializer.cdr.endian set."));
        // endian infomation set
        CORBA_SeqUtil::push_back(connector_profile.properties,
            NVUtil::newNV("dataport.serializer.cdr.endian", "little,big"));
      }
    return PortBase::connect(connector_profile);
  }
  
  //============================================================
  // protected interfaces
  //============================================================
  
  /*!
   * @if jp
   * @brief Interface¾ðÊó¤ò¸ø³«¤¹¤ë
   * @else
   * @brief Publish interface information
   * @endif
   */
  ReturnCode_t InPortBase::publishInterfaces(ConnectorProfile& cprof)
  {    
    RTC_TRACE(("publishInterfaces()"));

    ReturnCode_t returnvalue = _publishInterfaces();
    if(returnvalue!=RTC::RTC_OK)
      {
        return returnvalue;
      }

    // prop: [port.outport].
    coil::Properties prop(m_properties);
    {
      coil::Properties conn_prop;
      NVUtil::copyToProperties(conn_prop, cprof.properties);
      prop << conn_prop.getNode("dataport"); // marge ConnectorProfile
      /*
       * marge ConnectorProfile for buffer property.
       * e.g.
       *  prof[buffer.write.full_policy]
       *       << cprof[dataport.inport.buffer.write.full_policy]
       */
      prop << conn_prop.getNode("dataport.inport");
    }
    RTC_DEBUG(("ConnectorProfile::properties are as follows."));
    RTC_DEBUG_STR((prop));

    /*
     * ¤³¤³¤Ç, ConnectorProfile ¤«¤é¤Î properties ¤¬¥Þ¡¼¥¸¤µ¤ì¤¿¤¿¤á¡¢
     * prop["dataflow_type"]: ¥Ç¡¼¥¿¥Õ¥í¡¼¥¿¥¤¥×
     * prop["interface_type"]: ¥¤¥ó¥¿¡¼¥Õ¥§¡¼¥¹¥¿¥¤¥×
     * ¤Ê¤É¤¬¥¢¥¯¥»¥¹²Äǽ¤Ë¤Ê¤ë¡£
     */
    std::string dflow_type(prop["dataflow_type"]);
    coil::normalize(dflow_type);

    if (dflow_type == "push")
      {
        RTC_DEBUG(("dataflow_type = push .... create PushConnector"));

        // create InPortProvider
        InPortProvider* provider(createProvider(cprof, prop));
        if (provider == 0)
          {
            RTC_ERROR(("InPort provider creation failed."));
            return RTC::BAD_PARAMETER;
          }

        // create InPortPushConnector
        InPortConnector* connector(createConnector(cprof, prop, provider));
        if (connector == 0)
          {
            RTC_ERROR(("PushConnector creation failed."));
            return RTC::RTC_ERROR;
          }

        // connector set
        provider->setConnector(connector);

        RTC_DEBUG(("publishInterface() successfully finished."));
        return RTC::RTC_OK;
      }
    else if (dflow_type == "pull")
      {
        RTC_DEBUG(("dataflow_type = pull .... do nothing"));
        return RTC::RTC_OK;
      }

    RTC_ERROR(("unsupported dataflow_type: %s", dflow_type.c_str()));
    return RTC::BAD_PARAMETER;
  }
  
  /*!
   * @if jp
   * @brief Interface¤ËÀܳ¤¹¤ë
   * @else
   * @brief Subscribe to the interface
   * @endif
   */
  ReturnCode_t InPortBase::subscribeInterfaces(const ConnectorProfile& cprof)
  {
    RTC_TRACE(("subscribeInterfaces()"));

    // prop: [port.outport].
    coil::Properties prop(m_properties);
    {
      coil::Properties conn_prop;
      NVUtil::copyToProperties(conn_prop, cprof.properties);
      prop << conn_prop.getNode("dataport"); // marge ConnectorProfile
      /*
       * marge ConnectorProfile for buffer property.
       * e.g.
       *  prof[buffer.write.full_policy]
       *       << cprof[dataport.inport.buffer.write.full_policy]
       */
      prop << conn_prop.getNode("dataport.inport");
    }
    RTC_DEBUG(("ConnectorProfile::properties are as follows."));
    RTC_DEBUG_STR((prop));

    bool littleEndian; // true: little, false: big
    if (!checkEndian(prop, littleEndian))
      {
        RTC_ERROR(("unsupported endian"));
        return RTC::UNSUPPORTED;
      }
    RTC_TRACE(("endian: %s", littleEndian ? "little" : "big"));

    /*
     * ¤³¤³¤Ç, ConnectorProfile ¤«¤é¤Î properties ¤¬¥Þ¡¼¥¸¤µ¤ì¤¿¤¿¤á¡¢
     * prop["dataflow_type"]: ¥Ç¡¼¥¿¥Õ¥í¡¼¥¿¥¤¥×
     * prop["interface_type"]: ¥¤¥ó¥¿¡¼¥Õ¥§¡¼¥¹¥¿¥¤¥×
     * ¤Ê¤É¤¬¥¢¥¯¥»¥¹²Äǽ¤Ë¤Ê¤ë¡£
     */
    std::string dflow_type(prop["dataflow_type"]);
    coil::normalize(dflow_type);

    if (dflow_type == "push")
      {
        RTC_DEBUG(("dataflow_type is push."));

        // setting endian type
        InPortConnector* conn(getConnectorById(cprof.connector_id));
        if (conn == 0)
          {
            RTC_ERROR(("specified connector not found: %s",
                       (const char*)cprof.connector_id));
            return RTC::RTC_ERROR;
          }
        conn->setEndian(littleEndian);

        RTC_DEBUG(("subscribeInterfaces() successfully finished."));
        return RTC::RTC_OK;
      }
    else if (dflow_type == "pull")
      {
        RTC_DEBUG(("dataflow_type is pull."));

        // create OutPortConsumer
        OutPortConsumer* consumer(createConsumer(cprof, prop));
        if (consumer == 0)
          {
            return RTC::BAD_PARAMETER;
          }

        // create InPortPullConnector
        InPortConnector* connector(createConnector(cprof, prop, consumer));
        if (connector == 0)
          {
            return RTC::RTC_ERROR;
          }

        RTC_DEBUG(("subscribeInterfaces() successfully finished."));
        return RTC::RTC_OK;
      }

    RTC_ERROR(("unsupported dataflow_type: %s", dflow_type.c_str()));
    return RTC::BAD_PARAMETER;
  }
  
  /*!
   * @if jp
   * @brief Interface¤Ø¤ÎÀܳ¤ò²ò½ü¤¹¤ë
   * @else
   * @brief Disconnect the interface connection
   * @endif
   */
  void
  InPortBase::unsubscribeInterfaces(const ConnectorProfile& connector_profile)
  {
    RTC_TRACE(("unsubscribeInterfaces()"));

    std::string id(connector_profile.connector_id);
    RTC_PARANOID(("connector_id: %s", id.c_str()));

    ConnectorList::iterator it(m_connectors.begin());

    while (it != m_connectors.end())
      {
        if (id == (*it)->id())
          {
            // Connector's dtor must call disconnect()
// RtORB's bug? This causes double delete and segmeentation fault.
#ifndef ORB_IS_RTORB
            delete *it;
#endif
            m_connectors.erase(it);
            RTC_TRACE(("delete connector: %s", id.c_str()));
            return;
          }
        ++it;
      }
    RTC_ERROR(("specified connector not found: %s", id.c_str()));
    return;
  }

  /*!
   * @if jp
   * @brief InPort provider ¤Î½é´ü²½
   * @else
   * @brief InPort provider initialization
   * @endif
   */
  void InPortBase::initProviders()
  {
    RTC_TRACE(("initProviders()"));

    // create InPort providers
    InPortProviderFactory& factory(InPortProviderFactory::instance());
    coil::vstring provider_types(factory.getIdentifiers());
    RTC_DEBUG(("available providers: %s",
               coil::flatten(provider_types).c_str()));

#ifndef RTC_NO_DATAPORTIF_ACTIVATION_OPTION
    if (m_properties.hasKey("provider_types") &&
        coil::normalize(m_properties["provider_types"]) != "all")
      {
        RTC_DEBUG(("allowed providers: %s",
                   m_properties["provider_types"].c_str()));

        coil::vstring temp_types(provider_types);
        provider_types.clear();
        coil::vstring
          active_types(coil::split(m_properties["provider_types"], ","));

        std::sort(temp_types.begin(), temp_types.end());
        std::sort(active_types.begin(), active_types.end());
        std::set_intersection(temp_types.begin(), temp_types.end(),
                              active_types.begin(), active_types.end(),
                              std::back_inserter(provider_types));
      }
#endif
    
    // InPortProvider supports "push" dataflow type
    if (provider_types.size() > 0)
      {
        RTC_DEBUG(("dataflow_type push is supported"));
        appendProperty("dataport.dataflow_type", "push");
        appendProperty("dataport.interface_type",
                       coil::flatten(provider_types).c_str());
      }

    m_providerTypes = provider_types;
  }

  /*!
   * @if jp
   * @brief OutPort consumer ¤Î½é´ü²½
   * @else
   * @brief OutPort consumer initialization
   * @endif
   */
  void InPortBase::initConsumers()
  {
    RTC_TRACE(("initConsumers()"));

    // create OuPort consumers
    OutPortConsumerFactory& factory(OutPortConsumerFactory::instance());
    coil::vstring consumer_types(factory.getIdentifiers());
    RTC_DEBUG(("available consumers: %s",
               coil::flatten(consumer_types).c_str()));

#ifndef RTC_NO_DATAPORTIF_ACTIVATION_OPTION
    if (m_properties.hasKey("consumer_types") &&
        coil::normalize(m_properties["consumer_types"]) != "all")
      {
        RTC_DEBUG(("allowed consumers: %s",
                   m_properties["consumer_types"].c_str()));

        coil::vstring temp_types(consumer_types);
        consumer_types.clear();
        coil::vstring
          active_types(coil::split(m_properties["consumer_types"], ","));

        std::sort(temp_types.begin(), temp_types.end());
        std::sort(active_types.begin(), active_types.end());
        std::set_intersection(temp_types.begin(), temp_types.end(),
                              active_types.begin(), active_types.end(),
                              std::back_inserter(consumer_types));
      }
#endif

    // OutPortConsumer supports "pull" dataflow type
    if (consumer_types.size() > 0)
      {
        RTC_PARANOID(("dataflow_type pull is supported"));
        appendProperty("dataport.dataflow_type", "pull");
        appendProperty("dataport.interface_type",
                       coil::flatten(consumer_types).c_str());
      }

    m_consumerTypes = consumer_types;
  }

  /*!
   * @if jp
   * @brief ¥·¥ê¥¢¥é¥¤¥¶¤Î¥¨¥ó¥Ç¥£¥¢¥ó¤ò¥Á¥§¥Ã¥¯¤¹¤ë
   * @else
   * @brief Checking endian flag of serializer
   * @endif
   */
  bool InPortBase::checkEndian(const coil::Properties& prop,
                               bool& littleEndian)
  {
        // old version check
    if(prop.hasKey("serializer") == NULL)
      {
        littleEndian = true;
        return true;
      }

    // endian type check
    std::string endian_type(prop.getProperty("serializer.cdr.endian", ""));
    RTC_DEBUG(("endian_type: %s", endian_type.c_str()));
    coil::normalize(endian_type);
    std::vector<std::string> endian(coil::split(endian_type, ","));

    if(endian.empty()) { return false; }
    if(endian[0] == "little")
      {
        littleEndian = true;
        return true;
      }
    else if(endian[0] == "big")
      {
        littleEndian = false;
        return true;
      }
    return false;
  }



  /*!
   * @if jp
   * @brief InPort provider ¤ÎÀ¸À®
   * @else
   * @brief InPort provider creation
   * @endif
   */
  InPortProvider*
  InPortBase::createProvider(ConnectorProfile& cprof, coil::Properties& prop)
  {
    if (!prop["interface_type"].empty() &&
        !coil::includes((coil::vstring)m_providerTypes, prop["interface_type"]))
      {
        RTC_ERROR(("no provider found"));
        RTC_DEBUG(("interface_type:  %s", prop["interface_type"].c_str()));
        RTC_DEBUG(("interface_types: %s",
                   coil::flatten(m_providerTypes).c_str()));
        return 0;
      }
    
    RTC_DEBUG(("interface_type: %s", prop["interface_type"].c_str()));
    InPortProvider* provider;
    provider = InPortProviderFactory::
      instance().createObject(prop["interface_type"].c_str());
    
    if (provider != 0)
      {
        RTC_DEBUG(("provider created"));
        provider->init(prop.getNode("provider"));

#ifndef ORB_IS_RTORB
        if (!provider->publishInterface(cprof.properties))
          {
            RTC_ERROR(("publishing interface information error"));
            InPortProviderFactory::instance().deleteObject(provider);
            return 0;
          }
#else // ORB_IS_RTORB
        // RtORB's copy ctor's bug?
        ::SDOPackage::NVList_ptr prop_ref(cprof.properties);
        if (!provider->publishInterface(*prop_ref))
          {
            RTC_ERROR(("publishing interface information error"));
            InPortProviderFactory::instance().deleteObject(provider);
            return 0;
          }
#endif // ORB_IS_RTORB
        return provider;
      }

    RTC_ERROR(("provider creation failed"));
    return 0;
  }

  /*!
   * @if jp
   * @brief OutPort consumer ¤ÎÀ¸À®
   * @else
   * @brief InPort provider creation
   * @endif
   */
  OutPortConsumer*
  InPortBase::createConsumer(const ConnectorProfile& cprof,
                             coil::Properties& prop)
  {
    if (!prop["interface_type"].empty() &&
        !coil::includes((coil::vstring)m_consumerTypes, prop["interface_type"]))
      {
        RTC_ERROR(("no consumer found"));
        RTC_DEBUG(("interface_type:  %s", prop["interface_type"].c_str()));
        RTC_DEBUG(("interface_types: %s",
                   coil::flatten(m_consumerTypes).c_str()));
        return 0;
      }
    
    RTC_DEBUG(("interface_type: %s", prop["interface_type"].c_str()));
    OutPortConsumer* consumer;
    consumer = OutPortConsumerFactory::
      instance().createObject(prop["interface_type"].c_str());
    
    if (consumer != 0)
      {
        RTC_DEBUG(("consumer created"));
        consumer->init(prop.getNode("consumer"));

        if (!consumer->subscribeInterface(cprof.properties))
          {
            RTC_ERROR(("interface subscription failed."));
            OutPortConsumerFactory::instance().deleteObject(consumer);
            return 0;
          }

        return consumer;
      }

    RTC_ERROR(("consumer creation failed"));
    return 0; 
  }
  
  /*!
   * @if jp
   * @brief InPortPushConnector ¤ÎÀ¸À®
   * @else
   * @brief InPortPushConnector creation
   * @endif
   */
  InPortConnector*
  InPortBase::createConnector(ConnectorProfile& cprof, coil::Properties& prop,
                              InPortProvider* provider)
  {
#ifndef ORB_IS_RTORB
    ConnectorInfo profile(cprof.name,
                          cprof.connector_id,
                          CORBA_SeqUtil::refToVstring(cprof.ports),
                          prop); 
#else // ORB_IS_RTORB
    ConnectorInfo profile(cprof.name,
                          cprof.connector_id,
                          CORBA_SeqUtil::
                          refToVstring(RTC::PortServiceList(cprof.ports)),
                          prop); 
#endif // ORB_IS_RTORB

    InPortConnector* connector(0);
    try
      {
        if (m_singlebuffer)
          {
            connector = new InPortPushConnector(profile, provider,
                                                m_listeners,
                                                m_thebuffer);
          }
        else
          {
            connector = new InPortPushConnector(profile, 
                                                provider,
                                                m_listeners);
          }

        if (connector == 0)
          {
            RTC_ERROR(("old compiler? new returned 0;"));
            return 0;
          }
        RTC_TRACE(("InPortPushConnector created"));

        m_connectors.push_back(connector);
        RTC_PARANOID(("connector push backed: %d", m_connectors.size()));
        return connector;
      }
    catch (std::bad_alloc& e)
      {
        RTC_ERROR(("InPortPushConnector creation failed"));
        return 0;
      }
    RTC_FATAL(("never comes here: createConnector()"));
    return 0;
  }

  /*!
   * @if jp
   * @brief InPortPullConnector ¤ÎÀ¸À®
   * @else
   * @brief InPortPullConnector creation
   * @endif
   */
  InPortConnector*
  InPortBase::createConnector(const ConnectorProfile& cprof,
                              coil::Properties& prop,
                              OutPortConsumer* consumer)
  {
#ifndef ORB_IS_RTORB
    ConnectorInfo profile(cprof.name,
                          cprof.connector_id,
                          CORBA_SeqUtil::refToVstring(cprof.ports),
                          prop); 
#else // ORB_IS_RTORB
    ConnectorInfo profile(cprof.name,
                          cprof.connector_id,
                          CORBA_SeqUtil::
                          refToVstring(RTC::PortServiceList(cprof.ports)),
                          prop); 
#endif // ORB_IS_RTORB

    InPortConnector* connector(0);
    try
      {
        if (m_singlebuffer)
          {
            connector = new InPortPullConnector(profile, consumer,
                                                m_listeners,
                                                m_thebuffer);
          }
        else
          {
            connector = new InPortPullConnector(profile, consumer, m_listeners);
          }

        if (connector == 0)
          {
            RTC_ERROR(("old compiler? new returned 0;"));
            return 0;
          }
        RTC_TRACE(("InPortPushConnector created"));

        // endian type set
        connector->setEndian(m_littleEndian);
        m_connectors.push_back(connector);
        RTC_PARANOID(("connector push backed: %d", m_connectors.size()));
        return connector;
      }
    catch (std::bad_alloc& e)
      {
        RTC_ERROR(("InPortPullConnector creation failed"));
        return 0;
      }
    RTC_FATAL(("never comes here: createConnector()"));
    return 0;
  }

};

    RTC_DEBUG(("setting port.port_type: DataIntPort"));
    addProperty("port.port_type", "DataInPort");

    RTC_DEBUG(("setting dataport.data_type: %s", data_type));
    addProperty("dataport.data_type", data_type);

    addProperty("dataport.subscription_type", "Any");
  }
  
  InPortBase::~InPortBase()
  {
    RTC_TRACE(("~InPortBase()"));
    
    if (m_connectors.size() != 0)
      {
        RTC_ERROR(("connector.size should be 0 in InPortBase's dtor."));
        for (int i(0), len(m_connectors.size()); i < len; ++i)
          {
            m_connectors[i]->disconnect();
            delete m_connectors[i];
          }
      }
    
    if (m_thebuffer != 0)
      {
        CdrBufferFactory::instance().deleteObject(m_thebuffer);
        if (!m_singlebuffer)
          {
            RTC_ERROR(("Although singlebuffer flag is true, the buffer != 0"));
          }
      }
    
  }

  void InPortBase::init(coil::Properties& prop)
  {
    RTC_TRACE(("init()"));
    RTC_PARANOID(("given properties:"));
    RTC_DEBUG_STR((prop));

    // merge properties to PortProfile.properties
    m_properties << prop;
    NVList nv;
    NVUtil::copyFromProperties(nv, m_properties);
    CORBA_SeqUtil::push_back_list(m_profile.properties, nv);
    RTC_PARANOID(("updated properties:"));
    RTC_DEBUG_STR((m_properties));

    if (m_singlebuffer)
      {
        RTC_DEBUG(("single buffer mode."));
        m_thebuffer = CdrBufferFactory::instance().createObject("ring_buffer");
        if (m_thebuffer == 0)
          {
            RTC_ERROR(("default buffer creation failed"));
          }
      }
    else
      {
        RTC_DEBUG(("multi buffer mode."));
      }

    initProviders();
    initConsumers();
    int num(-1);
    if (!coil::stringTo(num, 
                     m_properties.getProperty("connection_limit","-1").c_str()))
      {
        RTC_ERROR(("invalid connection_limit value: %s", 
                   m_properties.getProperty("connection_limit").c_str()));
      }

    setConnectionLimit(num);
  }
  
  coil::Properties& InPortBase::properties()
  {
    RTC_TRACE(("properties()"));
    
    return m_properties;
  }

  const std::vector<InPortConnector*>& InPortBase::connectors()
  {
    RTC_TRACE(("connectors(): size = %d", m_connectors.size()));
    return m_connectors;
  }

  ConnectorInfoList InPortBase::getConnectorProfiles()
  {
    RTC_TRACE(("getConnectorProfiles(): size = %d", m_connectors.size()));
    ConnectorInfoList profs;
    for (int i(0), len(m_connectors.size()); i < len; ++i)
      {
        profs.push_back(m_connectors[i]->profile());
      }
    return profs;
  }

  coil::vstring InPortBase::getConnectorIds()
  {
    coil::vstring ids;
    for (int i(0), len(m_connectors.size()); i < len; ++i)
      {
        ids.push_back(m_connectors[i]->id());
      }
    RTC_TRACE(("getConnectorIds(): %s", coil::flatten(ids).c_str()));
    return ids;
  }

  coil::vstring InPortBase::getConnectorNames()
  {
    coil::vstring names;
    for (int i(0), len(m_connectors.size()); i < len; ++i)
      {
        names.push_back(m_connectors[i]->name());
      }
    RTC_TRACE(("getConnectorNames(): %s", coil::flatten(names).c_str()));
    return names;
  }

  InPortConnector* InPortBase::getConnectorById(const char* id)
  {
    RTC_TRACE(("getConnectorById(id = %s)", id));

    std::string sid(id);
    for (int i(0), len(m_connectors.size()); i < len; ++i)
      {
        if (sid  == m_connectors[i]->id())
          {
            return m_connectors[i];
          }
      }
    RTC_WARN(("ConnectorProfile with the id(%s) not found.", id));
    return 0;
  }

  InPortConnector* InPortBase::getConnectorByName(const char* name)
  {
    RTC_TRACE(("getConnectorByName(name = %s)", name));

    std::string sname(name);
    for (int i(0), len(m_connectors.size()); i < len; ++i)
      {
        if (sname  == m_connectors[i]->name())
          {
            return m_connectors[i];
          }
      }
    RTC_WARN(("ConnectorProfile with the name(%s) not found.", name));
    return 0;
  }

  bool InPortBase::getConnectorProfileById(const char* id,
                                            ConnectorInfo& prof)
  {
    RTC_TRACE(("getConnectorProfileById(id = %s)", id));
    InPortConnector* conn(getConnectorById(id));
    if (conn == 0)
      {
        return false;
      }
    prof = conn->profile();
    return true;
  }

  bool InPortBase::getConnectorProfileByName(const char* name,
                                              ConnectorInfo& prof)
  {
    RTC_TRACE(("getConnectorProfileByName(name = %s)", name));
    InPortConnector* conn(getConnectorByName(name));
    if (conn == 0)
      {
        return false;
      }
    prof = conn->profile();
    return true;
  }


  void InPortBase::activateInterfaces()
  {
    RTC_TRACE(("activateInterfaces()"));
    
    for (int i(0), len(m_connectors.size()); i < len; ++i)
      {
        m_connectors[i]->activate();
        RTC_DEBUG(("activate connector: %s %s",
                   m_connectors[i]->name(),
                   m_connectors[i]->id()));
      }
  }

  void InPortBase::deactivateInterfaces()
  {
    RTC_TRACE(("deactivateInterfaces()"));

    for (int i(0), len(m_connectors.size()); i < len; ++i)
      {
        m_connectors[i]->deactivate();
        RTC_DEBUG(("deactivate connector: %s %s",
                   m_connectors[i]->name(),
                   m_connectors[i]->id()));
      }
  }

  void InPortBase::
  addConnectorDataListener(ConnectorDataListenerType type,
                           ConnectorDataListener* listener,
                           bool autoclean)
  {
    if (type < CONNECTOR_DATA_LISTENER_NUM)
      {
        RTC_TRACE(("addConnectorDataListener(%s)",
                   ConnectorDataListener::toString(type)));
        m_listeners.connectorData_[type].addListener(listener, autoclean);
        return;
      }
    RTC_ERROR(("addConnectorDataListener(): Invalid listener type."));
    return;
  }

  void InPortBase::
  removeConnectorDataListener(ConnectorDataListenerType type,
                              ConnectorDataListener* listener)
  {
    if (type < CONNECTOR_DATA_LISTENER_NUM)
      {
        RTC_TRACE(("removeConnectorDataListener(%s)",
                   ConnectorDataListener::toString(type)));
        m_listeners.connectorData_[type].removeListener(listener);
        return;
      }
    RTC_ERROR(("removeConnectorDataListener(): Invalid listener type."));
    return;
  }
  
  void InPortBase::addConnectorListener(ConnectorListenerType type,
                                         ConnectorListener* listener,
                                         bool autoclean)
  {
    if (type < CONNECTOR_LISTENER_NUM)
      {
        RTC_TRACE(("addConnectorListener(%s)",
                   ConnectorListener::toString(type)));
        m_listeners.connector_[type].addListener(listener, autoclean);
        return;
      }
    RTC_ERROR(("addConnectorListener(): Invalid listener type."));
    return;
  }
  
  void InPortBase::removeConnectorListener(ConnectorListenerType type,
                                            ConnectorListener* listener)
  {
    if (type < CONNECTOR_LISTENER_NUM)
      {
        RTC_TRACE(("removeConnectorListener(%s)",
                   ConnectorListener::toString(type)));
        m_listeners.connector_[type].removeListener(listener);
        return;
      }
    RTC_ERROR(("removeConnectorListener(): Invalid listener type."));
  }

  bool InPortBase::isLittleEndian()
  {
    return m_littleEndian;
  }

  ReturnCode_t InPortBase::connect(ConnectorProfile& connector_profile)
    throw (CORBA::SystemException)
  {
    RTC_TRACE(("InPortBase::connect()"));

    // endian infomation check
    CORBA::Long index(NVUtil::find_index(connector_profile.properties,
                                       "dataport.serializer.cdr.endian"));
    if (index < 0)
      {
        RTC_TRACE(("ConnectorProfile dataport.serializer.cdr.endian set."));
        // endian infomation set
        CORBA_SeqUtil::push_back(connector_profile.properties,
            NVUtil::newNV("dataport.serializer.cdr.endian", "little,big"));
      }
    return PortBase::connect(connector_profile);
  }
  
  //============================================================
  // protected interfaces
  //============================================================
  
  ReturnCode_t InPortBase::publishInterfaces(ConnectorProfile& cprof)
  {    
    RTC_TRACE(("publishInterfaces()"));

    ReturnCode_t returnvalue = _publishInterfaces();
    if(returnvalue!=RTC::RTC_OK)
      {
        return returnvalue;
      }

    // prop: [port.outport].
    coil::Properties prop(m_properties);
    {
      coil::Properties conn_prop;
      NVUtil::copyToProperties(conn_prop, cprof.properties);
      prop << conn_prop.getNode("dataport"); // marge ConnectorProfile
      /*
       * marge ConnectorProfile for buffer property.
       * e.g.
       *  prof[buffer.write.full_policy]
       *       << cprof[dataport.inport.buffer.write.full_policy]
       */
      prop << conn_prop.getNode("dataport.inport");
    }
    RTC_DEBUG(("ConnectorProfile::properties are as follows."));
    RTC_DEBUG_STR((prop));

    /*
     * ¤³¤³¤Ç, ConnectorProfile ¤«¤é¤Î properties ¤¬¥Þ¡¼¥¸¤µ¤ì¤¿¤¿¤á¡¢
     * prop["dataflow_type"]: ¥Ç¡¼¥¿¥Õ¥í¡¼¥¿¥¤¥×     * prop["interface_type"]: ¥¤¥ó¥¿¡¼¥Õ¥§¡¼¥¹¥¿¥¤¥×
     * ¤Ê¤É¤¬¥¢¥¯¥»¥¹²Äǽ¤Ë¤Ê¤ë¡£
     */
    std::string dflow_type(prop["dataflow_type"]);
    coil::normalize(dflow_type);

    if (dflow_type == "push")
      {
        RTC_DEBUG(("dataflow_type = push .... create PushConnector"));

        // create InPortProvider
        InPortProvider* provider(createProvider(cprof, prop));
        if (provider == 0)
          {
            RTC_ERROR(("InPort provider creation failed."));
            return RTC::BAD_PARAMETER;
          }

        // create InPortPushConnector
        InPortConnector* connector(createConnector(cprof, prop, provider));
        if (connector == 0)
          {
            RTC_ERROR(("PushConnector creation failed."));
            return RTC::RTC_ERROR;
          }

        // connector set
        provider->setConnector(connector);

        RTC_DEBUG(("publishInterface() successfully finished."));
        return RTC::RTC_OK;
      }
    else if (dflow_type == "pull")
      {
        RTC_DEBUG(("dataflow_type = pull .... do nothing"));
        return RTC::RTC_OK;
      }

    RTC_ERROR(("unsupported dataflow_type: %s", dflow_type.c_str()));
    return RTC::BAD_PARAMETER;
  }
  
  /*!
   * @if jp
   * @brief Interface¤ËÀܳ¤¹¤ë
   * @else
   * @brief Subscribe to the interface
   * @endif
   */
  ReturnCode_t InPortBase::subscribeInterfaces(const ConnectorProfile& cprof)
  {
    RTC_TRACE(("subscribeInterfaces()"));

    // prop: [port.outport].
    coil::Properties prop(m_properties);
    {
      coil::Properties conn_prop;
      NVUtil::copyToProperties(conn_prop, cprof.properties);
      prop << conn_prop.getNode("dataport"); // marge ConnectorProfile
      /*
       * marge ConnectorProfile for buffer property.
       * e.g.
       *  prof[buffer.write.full_policy]
       *       << cprof[dataport.inport.buffer.write.full_policy]
       */
      prop << conn_prop.getNode("dataport.inport");
    }
    RTC_DEBUG(("ConnectorProfile::properties are as follows."));
    RTC_DEBUG_STR((prop));

    bool littleEndian; // true: little, false: big
    if (!checkEndian(prop, littleEndian))
      {
        RTC_ERROR(("unsupported endian"));
        return RTC::UNSUPPORTED;
      }
    RTC_TRACE(("endian: %s", littleEndian ? "little" : "big"));

    /*
     * ¤³¤³¤Ç, ConnectorProfile ¤«¤é¤Î properties ¤¬¥Þ¡¼¥¸¤µ¤ì¤¿¤¿¤á¡¢
     * prop["dataflow_type"]: ¥Ç¡¼¥¿¥Õ¥í¡¼¥¿¥¤¥×
     * prop["interface_type"]: ¥¤¥ó¥¿¡¼¥Õ¥§¡¼¥¹¥¿¥¤¥×
     * ¤Ê¤É¤¬¥¢¥¯¥»¥¹²Äǽ¤Ë¤Ê¤ë¡£
     */
    std::string dflow_type(prop["dataflow_type"]);
    coil::normalize(dflow_type);

    if (dflow_type == "push")
      {
        RTC_DEBUG(("dataflow_type is push."));

        // setting endian type
        InPortConnector* conn(getConnectorById(cprof.connector_id));
        if (conn == 0)
          {
            RTC_ERROR(("specified connector not found: %s",
                       (const char*)cprof.connector_id));
            return RTC::RTC_ERROR;
          }
        conn->setEndian(littleEndian);

        RTC_DEBUG(("subscribeInterfaces() successfully finished."));
        return RTC::RTC_OK;
      }
    else if (dflow_type == "pull")
      {
        RTC_DEBUG(("dataflow_type is pull."));

        // create OutPortConsumer
        OutPortConsumer* consumer(createConsumer(cprof, prop));
        if (consumer == 0)
          {
            return RTC::BAD_PARAMETER;
          }

        // create InPortPullConnector
        InPortConnector* connector(createConnector(cprof, prop, consumer));
        if (connector == 0)
          {
            return RTC::RTC_ERROR;
          }

        RTC_DEBUG(("subscribeInterfaces() successfully finished."));
        return RTC::RTC_OK;
      }

    RTC_ERROR(("unsupported dataflow_type: %s", dflow_type.c_str()));
    return RTC::BAD_PARAMETER;
  }
  
  /*!
   * @if jp
   * @brief Interface¤Ø¤ÎÀܳ¤ò²ò½ü¤¹¤ë
   * @else
   * @brief Disconnect the interface connection
   * @endif
   */
  void
  InPortBase::unsubscribeInterfaces(const ConnectorProfile& connector_profile)
  {
    RTC_TRACE(("unsubscribeInterfaces()"));

    std::string id(connector_profile.connector_id);
    RTC_PARANOID(("connector_id: %s", id.c_str()));

    ConnectorList::iterator it(m_connectors.begin());

    while (it != m_connectors.end())
      {
        if (id == (*it)->id())
          {
            // Connector's dtor must call disconnect()
// RtORB's bug? This causes double delete and segmeentation fault.
#ifndef ORB_IS_RTORB
            delete *it;
#endif
            m_connectors.erase(it);
            RTC_TRACE(("delete connector: %s", id.c_str()));
            return;
          }
        ++it;
      }
    RTC_ERROR(("specified connector not found: %s", id.c_str()));
    return;
  }

  /*!
   * @if jp
   * @brief InPort provider ¤Î½é´ü²½
   * @else
   * @brief InPort provider initialization
   * @endif
   */
  void InPortBase::initProviders()
  {
    RTC_TRACE(("initProviders()"));

    // create InPort providers
    InPortProviderFactory& factory(InPortProviderFactory::instance());
    coil::vstring provider_types(factory.getIdentifiers());
    RTC_DEBUG(("available providers: %s",
               coil::flatten(provider_types).c_str()));

#ifndef RTC_NO_DATAPORTIF_ACTIVATION_OPTION
    if (m_properties.hasKey("provider_types") &&
        coil::normalize(m_properties["provider_types"]) != "all")
      {
        RTC_DEBUG(("allowed providers: %s",
                   m_properties["provider_types"].c_str()));

        coil::vstring temp_types(provider_types);
        provider_types.clear();
        coil::vstring
          active_types(coil::split(m_properties["provider_types"], ","));

        std::sort(temp_types.begin(), temp_types.end());
        std::sort(active_types.begin(), active_types.end());
        std::set_intersection(temp_types.begin(), temp_types.end(),
                              active_types.begin(), active_types.end(),
                              std::back_inserter(provider_types));
      }
#endif
    
    // InPortProvider supports "push" dataflow type
    if (provider_types.size() > 0)
      {
        RTC_DEBUG(("dataflow_type push is supported"));
        appendProperty("dataport.dataflow_type", "push");
        appendProperty("dataport.interface_type",
                       coil::flatten(provider_types).c_str());
      }

    m_providerTypes = provider_types;
  }

  /*!
   * @if jp
   * @brief OutPort consumer ¤Î½é´ü²½
   * @else
   * @brief OutPort consumer initialization
   * @endif
   */
  void InPortBase::initConsumers()
  {
    RTC_TRACE(("initConsumers()"));

    // create OuPort consumers
    OutPortConsumerFactory& factory(OutPortConsumerFactory::instance());
    coil::vstring consumer_types(factory.getIdentifiers());
    RTC_DEBUG(("available consumers: %s",
               coil::flatten(consumer_types).c_str()));

#ifndef RTC_NO_DATAPORTIF_ACTIVATION_OPTION
    if (m_properties.hasKey("consumer_types") &&
        coil::normalize(m_properties["consumer_types"]) != "all")
      {
        RTC_DEBUG(("allowed consumers: %s",
                   m_properties["consumer_types"].c_str()));

        coil::vstring temp_types(consumer_types);
        consumer_types.clear();
        coil::vstring
          active_types(coil::split(m_properties["consumer_types"], ","));

        std::sort(temp_types.begin(), temp_types.end());
        std::sort(active_types.begin(), active_types.end());
        std::set_intersection(temp_types.begin(), temp_types.end(),
                              active_types.begin(), active_types.end(),
                              std::back_inserter(consumer_types));
      }
#endif

    // OutPortConsumer supports "pull" dataflow type
    if (consumer_types.size() > 0)
      {
        RTC_PARANOID(("dataflow_type pull is supported"));
        appendProperty("dataport.dataflow_type", "pull");
        appendProperty("dataport.interface_type",
                       coil::flatten(consumer_types).c_str());
      }

    m_consumerTypes = consumer_types;
  }

  /*!
   * @if jp
   * @brief ¥·¥ê¥¢¥é¥¤¥¶¤Î¥¨¥ó¥Ç¥£¥¢¥ó¤ò¥Á¥§¥Ã¥¯¤¹¤ë
   * @else
   * @brief Checking endian flag of serializer
   * @endif
   */
  bool InPortBase::checkEndian(const coil::Properties& prop,
                               bool& littleEndian)
  {
        // old version check
    if(prop.hasKey("serializer") == NULL)
      {
        littleEndian = true;
        return true;
      }

    // endian type check
    std::string endian_type(prop.getProperty("serializer.cdr.endian", ""));
    RTC_DEBUG(("endian_type: %s", endian_type.c_str()));
    coil::normalize(endian_type);
    std::vector<std::string> endian(coil::split(endian_type, ","));

    if(endian.empty()) { return false; }
    if(endian[0] == "little")
      {
        littleEndian = true;
        return true;
      }
    else if(endian[0] == "big")
      {
        littleEndian = false;
        return true;
      }
    return false;
  }



  /*!
   * @if jp
   * @brief InPort provider ¤ÎÀ¸À®
   * @else
   * @brief InPort provider creation
   * @endif
   */
  InPortProvider*
  InPortBase::createProvider(ConnectorProfile& cprof, coil::Properties& prop)
  {
    if (!prop["interface_type"].empty() &&
        !coil::includes((coil::vstring)m_providerTypes, prop["interface_type"]))
      {
        RTC_ERROR(("no provider found"));
        RTC_DEBUG(("interface_type:  %s", prop["interface_type"].c_str()));
        RTC_DEBUG(("interface_types: %s",
                   coil::flatten(m_providerTypes).c_str()));
        return 0;
      }
    
    RTC_DEBUG(("interface_type: %s", prop["interface_type"].c_str()));
    InPortProvider* provider;
    provider = InPortProviderFactory::
      instance().createObject(prop["interface_type"].c_str());
    
    if (provider != 0)
      {
        RTC_DEBUG(("provider created"));
        provider->init(prop.getNode("provider"));

#ifndef ORB_IS_RTORB
        if (!provider->publishInterface(cprof.properties))
          {
            RTC_ERROR(("publishing interface information error"));
            InPortProviderFactory::instance().deleteObject(provider);
            return 0;
          }
#else // ORB_IS_RTORB
        // RtORB's copy ctor's bug?
        ::SDOPackage::NVList_ptr prop_ref(cprof.properties);
        if (!provider->publishInterface(*prop_ref))
          {
            RTC_ERROR(("publishing interface information error"));
            InPortProviderFactory::instance().deleteObject(provider);
            return 0;
          }
#endif // ORB_IS_RTORB
        return provider;
      }

    RTC_ERROR(("provider creation failed"));
    return 0;
  }

  /*!
   * @if jp
   * @brief OutPort consumer ¤ÎÀ¸À®
   * @else
   * @brief InPort provider creation
   * @endif
   */
  OutPortConsumer*
  InPortBase::createConsumer(const ConnectorProfile& cprof,
                             coil::Properties& prop)
  {
    if (!prop["interface_type"].empty() &&
        !coil::includes((coil::vstring)m_consumerTypes, prop["interface_type"]))
      {
        RTC_ERROR(("no consumer found"));
        RTC_DEBUG(("interface_type:  %s", prop["interface_type"].c_str()));
        RTC_DEBUG(("interface_types: %s",
                   coil::flatten(m_consumerTypes).c_str()));
        return 0;
      }
    
    RTC_DEBUG(("interface_type: %s", prop["interface_type"].c_str()));
    OutPortConsumer* consumer;
    consumer = OutPortConsumerFactory::
      instance().createObject(prop["interface_type"].c_str());
    
    if (consumer != 0)
      {
        RTC_DEBUG(("consumer created"));
        consumer->init(prop.getNode("consumer"));

        if (!consumer->subscribeInterface(cprof.properties))
          {
            RTC_ERROR(("interface subscription failed."));
            OutPortConsumerFactory::instance().deleteObject(consumer);
            return 0;
          }

        return consumer;
      }

    RTC_ERROR(("consumer creation failed"));
    return 0; 
  }
  
  /*!
   * @if jp
   * @brief InPortPushConnector ¤ÎÀ¸À®
   * @else
   * @brief InPortPushConnector creation
   * @endif
   */
  InPortConnector*
  InPortBase::createConnector(ConnectorProfile& cprof, coil::Properties& prop,
                              InPortProvider* provider)
  {
#ifndef ORB_IS_RTORB
    ConnectorInfo profile(cprof.name,
                          cprof.connector_id,
                          CORBA_SeqUtil::refToVstring(cprof.ports),
                          prop); 
#else // ORB_IS_RTORB
    ConnectorInfo profile(cprof.name,
                          cprof.connector_id,
                          CORBA_SeqUtil::
                          refToVstring(RTC::PortServiceList(cprof.ports)),
                          prop); 
#endif // ORB_IS_RTORB

    InPortConnector* connector(0);
    try
      {
        if (m_singlebuffer)
          {
            connector = new InPortPushConnector(profile, provider,
                                                m_listeners,
                                                m_thebuffer);
          }
        else
          {
            connector = new InPortPushConnector(profile, 
                                                provider,
                                                m_listeners);
          }

        if (connector == 0)
          {
            RTC_ERROR(("old compiler? new returned 0;"));
            return 0;
          }
        RTC_TRACE(("InPortPushConnector created"));

        m_connectors.push_back(connector);
        RTC_PARANOID(("connector push backed: %d", m_connectors.size()));
        return connector;
      }
    catch (std::bad_alloc& e)
      {
        RTC_ERROR(("InPortPushConnector creation failed"));
        return 0;
      }
    RTC_FATAL(("never comes here: createConnector()"));
    return 0;
  }

  /*!
   * @if jp
   * @brief InPortPullConnector ¤ÎÀ¸À®
   * @else
   * @brief InPortPullConnector creation
   * @endif
   */
  InPortConnector*
  InPortBase::createConnector(const ConnectorProfile& cprof,
                              coil::Properties& prop,
                              OutPortConsumer* consumer)
  {
#ifndef ORB_IS_RTORB
    ConnectorInfo profile(cprof.name,
                          cprof.connector_id,
                          CORBA_SeqUtil::refToVstring(cprof.ports),
                          prop); 
#else // ORB_IS_RTORB
    ConnectorInfo profile(cprof.name,
                          cprof.connector_id,
                          CORBA_SeqUtil::
                          refToVstring(RTC::PortServiceList(cprof.ports)),
                          prop); 
#endif // ORB_IS_RTORB

    InPortConnector* connector(0);
    try
      {
        if (m_singlebuffer)
          {
            connector = new InPortPullConnector(profile, consumer,
                                                m_listeners,
                                                m_thebuffer);
          }
        else
          {
            connector = new InPortPullConnector(profile, consumer, m_listeners);
          }

        if (connector == 0)
          {
            RTC_ERROR(("old compiler? new returned 0;"));
            return 0;
          }
        RTC_TRACE(("InPortPushConnector created"));

        // endian type set
        connector->setEndian(m_littleEndian);
        m_connectors.push_back(connector);
        RTC_PARANOID(("connector push backed: %d", m_connectors.size()));
        return connector;
      }
    catch (std::bad_alloc& e)
      {
        RTC_ERROR(("InPortPullConnector creation failed"));
        return 0;
      }
    RTC_FATAL(("never comes here: createConnector()"));
    return 0;
  }

};

     * prop["interface_type"]: ¥¤¥ó¥¿¡¼¥Õ¥§¡¼¥¹¥¿¥¤¥×     * ¤Ê¤É¤¬¥¢¥¯¥»¥¹²Äǽ¤Ë¤Ê¤ë¡£
     */
    std::string dflow_type(prop["dataflow_type"]);
    coil::normalize(dflow_type);

    if (dflow_type == "push")
      {
        RTC_DEBUG(("dataflow_type = push .... create PushConnector"));

        // create InPortProvider
        InPortProvider* provider(createProvider(cprof, prop));
        if (provider == 0)
          {
            RTC_ERROR(("InPort provider creation failed."));
            return RTC::BAD_PARAMETER;
          }

        // create InPortPushConnector
        InPortConnector* connector(createConnector(cprof, prop, provider));
        if (connector == 0)
          {
            RTC_ERROR(("PushConnector creation failed."));
            return RTC::RTC_ERROR;
          }

        // connector set
        provider->setConnector(connector);

        RTC_DEBUG(("publishInterface() successfully finished."));
        return RTC::RTC_OK;
      }
    else if (dflow_type == "pull")
      {
        RTC_DEBUG(("dataflow_type = pull .... do nothing"));
        return RTC::RTC_OK;
      }

    RTC_ERROR(("unsupported dataflow_type: %s", dflow_type.c_str()));
    return RTC::BAD_PARAMETER;
  }
  
  /*!
   * @if jp
   * @brief Interface¤ËÀܳ¤¹¤ë
   * @else
   * @brief Subscribe to the interface
   * @endif
   */
  ReturnCode_t InPortBase::subscribeInterfaces(const ConnectorProfile& cprof)
  {
    RTC_TRACE(("subscribeInterfaces()"));

    // prop: [port.outport].
    coil::Properties prop(m_properties);
    {
      coil::Properties conn_prop;
      NVUtil::copyToProperties(conn_prop, cprof.properties);
      prop << conn_prop.getNode("dataport"); // marge ConnectorProfile
      /*
       * marge ConnectorProfile for buffer property.
       * e.g.
       *  prof[buffer.write.full_policy]
       *       << cprof[dataport.inport.buffer.write.full_policy]
       */
      prop << conn_prop.getNode("dataport.inport");
    }
    RTC_DEBUG(("ConnectorProfile::properties are as follows."));
    RTC_DEBUG_STR((prop));

    bool littleEndian; // true: little, false: big
    if (!checkEndian(prop, littleEndian))
      {
        RTC_ERROR(("unsupported endian"));
        return RTC::UNSUPPORTED;
      }
    RTC_TRACE(("endian: %s", littleEndian ? "little" : "big"));

    /*
     * ¤³¤³¤Ç, ConnectorProfile ¤«¤é¤Î properties ¤¬¥Þ¡¼¥¸¤µ¤ì¤¿¤¿¤á¡¢
     * prop["dataflow_type"]: ¥Ç¡¼¥¿¥Õ¥í¡¼¥¿¥¤¥×
     * prop["interface_type"]: ¥¤¥ó¥¿¡¼¥Õ¥§¡¼¥¹¥¿¥¤¥×
     * ¤Ê¤É¤¬¥¢¥¯¥»¥¹²Äǽ¤Ë¤Ê¤ë¡£
     */
    std::string dflow_type(prop["dataflow_type"]);
    coil::normalize(dflow_type);

    if (dflow_type == "push")
      {
        RTC_DEBUG(("dataflow_type is push."));

        // setting endian type
        InPortConnector* conn(getConnectorById(cprof.connector_id));
        if (conn == 0)
          {
            RTC_ERROR(("specified connector not found: %s",
                       (const char*)cprof.connector_id));
            return RTC::RTC_ERROR;
          }
        conn->setEndian(littleEndian);

        RTC_DEBUG(("subscribeInterfaces() successfully finished."));
        return RTC::RTC_OK;
      }
    else if (dflow_type == "pull")
      {
        RTC_DEBUG(("dataflow_type is pull."));

        // create OutPortConsumer
        OutPortConsumer* consumer(createConsumer(cprof, prop));
        if (consumer == 0)
          {
            return RTC::BAD_PARAMETER;
          }

        // create InPortPullConnector
        InPortConnector* connector(createConnector(cprof, prop, consumer));
        if (connector == 0)
          {
            return RTC::RTC_ERROR;
          }

        RTC_DEBUG(("subscribeInterfaces() successfully finished."));
        return RTC::RTC_OK;
      }

    RTC_ERROR(("unsupported dataflow_type: %s", dflow_type.c_str()));
    return RTC::BAD_PARAMETER;
  }
  
  /*!
   * @if jp
   * @brief Interface¤Ø¤ÎÀܳ¤ò²ò½ü¤¹¤ë
   * @else
   * @brief Disconnect the interface connection
   * @endif
   */
  void
  InPortBase::unsubscribeInterfaces(const ConnectorProfile& connector_profile)
  {
    RTC_TRACE(("unsubscribeInterfaces()"));

    std::string id(connector_profile.connector_id);
    RTC_PARANOID(("connector_id: %s", id.c_str()));

    ConnectorList::iterator it(m_connectors.begin());

    while (it != m_connectors.end())
      {
        if (id == (*it)->id())
          {
            // Connector's dtor must call disconnect()
// RtORB's bug? This causes double delete and segmeentation fault.
#ifndef ORB_IS_RTORB
            delete *it;
#endif
            m_connectors.erase(it);
            RTC_TRACE(("delete connector: %s", id.c_str()));
            return;
          }
        ++it;
      }
    RTC_ERROR(("specified connector not found: %s", id.c_str()));
    return;
  }

  /*!
   * @if jp
   * @brief InPort provider ¤Î½é´ü²½
   * @else
   * @brief InPort provider initialization
   * @endif
   */
  void InPortBase::initProviders()
  {
    RTC_TRACE(("initProviders()"));

    // create InPort providers
    InPortProviderFactory& factory(InPortProviderFactory::instance());
    coil::vstring provider_types(factory.getIdentifiers());
    RTC_DEBUG(("available providers: %s",
               coil::flatten(provider_types).c_str()));

#ifndef RTC_NO_DATAPORTIF_ACTIVATION_OPTION
    if (m_properties.hasKey("provider_types") &&
        coil::normalize(m_properties["provider_types"]) != "all")
      {
        RTC_DEBUG(("allowed providers: %s",
                   m_properties["provider_types"].c_str()));

        coil::vstring temp_types(provider_types);
        provider_types.clear();
        coil::vstring
          active_types(coil::split(m_properties["provider_types"], ","));

        std::sort(temp_types.begin(), temp_types.end());
        std::sort(active_types.begin(), active_types.end());
        std::set_intersection(temp_types.begin(), temp_types.end(),
                              active_types.begin(), active_types.end(),
                              std::back_inserter(provider_types));
      }
#endif
    
    // InPortProvider supports "push" dataflow type
    if (provider_types.size() > 0)
      {
        RTC_DEBUG(("dataflow_type push is supported"));
        appendProperty("dataport.dataflow_type", "push");
        appendProperty("dataport.interface_type",
                       coil::flatten(provider_types).c_str());
      }

    m_providerTypes = provider_types;
  }

  /*!
   * @if jp
   * @brief OutPort consumer ¤Î½é´ü²½
   * @else
   * @brief OutPort consumer initialization
   * @endif
   */
  void InPortBase::initConsumers()
  {
    RTC_TRACE(("initConsumers()"));

    // create OuPort consumers
    OutPortConsumerFactory& factory(OutPortConsumerFactory::instance());
    coil::vstring consumer_types(factory.getIdentifiers());
    RTC_DEBUG(("available consumers: %s",
               coil::flatten(consumer_types).c_str()));

#ifndef RTC_NO_DATAPORTIF_ACTIVATION_OPTION
    if (m_properties.hasKey("consumer_types") &&
        coil::normalize(m_properties["consumer_types"]) != "all")
      {
        RTC_DEBUG(("allowed consumers: %s",
                   m_properties["consumer_types"].c_str()));

        coil::vstring temp_types(consumer_types);
        consumer_types.clear();
        coil::vstring
          active_types(coil::split(m_properties["consumer_types"], ","));

        std::sort(temp_types.begin(), temp_types.end());
        std::sort(active_types.begin(), active_types.end());
        std::set_intersection(temp_types.begin(), temp_types.end(),
                              active_types.begin(), active_types.end(),
                              std::back_inserter(consumer_types));
      }
#endif

    // OutPortConsumer supports "pull" dataflow type
    if (consumer_types.size() > 0)
      {
        RTC_PARANOID(("dataflow_type pull is supported"));
        appendProperty("dataport.dataflow_type", "pull");
        appendProperty("dataport.interface_type",
                       coil::flatten(consumer_types).c_str());
      }

    m_consumerTypes = consumer_types;
  }

  /*!
   * @if jp
   * @brief ¥·¥ê¥¢¥é¥¤¥¶¤Î¥¨¥ó¥Ç¥£¥¢¥ó¤ò¥Á¥§¥Ã¥¯¤¹¤ë
   * @else
   * @brief Checking endian flag of serializer
   * @endif
   */
  bool InPortBase::checkEndian(const coil::Properties& prop,
                               bool& littleEndian)
  {
        // old version check
    if(prop.hasKey("serializer") == NULL)
      {
        littleEndian = true;
        return true;
      }

    // endian type check
    std::string endian_type(prop.getProperty("serializer.cdr.endian", ""));
    RTC_DEBUG(("endian_type: %s", endian_type.c_str()));
    coil::normalize(endian_type);
    std::vector<std::string> endian(coil::split(endian_type, ","));

    if(endian.empty()) { return false; }
    if(endian[0] == "little")
      {
        littleEndian = true;
        return true;
      }
    else if(endian[0] == "big")
      {
        littleEndian = false;
        return true;
      }
    return false;
  }



  /*!
   * @if jp
   * @brief InPort provider ¤ÎÀ¸À®
   * @else
   * @brief InPort provider creation
   * @endif
   */
  InPortProvider*
  InPortBase::createProvider(ConnectorProfile& cprof, coil::Properties& prop)
  {
    if (!prop["interface_type"].empty() &&
        !coil::includes((coil::vstring)m_providerTypes, prop["interface_type"]))
      {
        RTC_ERROR(("no provider found"));
        RTC_DEBUG(("interface_type:  %s", prop["interface_type"].c_str()));
        RTC_DEBUG(("interface_types: %s",
                   coil::flatten(m_providerTypes).c_str()));
        return 0;
      }
    
    RTC_DEBUG(("interface_type: %s", prop["interface_type"].c_str()));
    InPortProvider* provider;
    provider = InPortProviderFactory::
      instance().createObject(prop["interface_type"].c_str());
    
    if (provider != 0)
      {
        RTC_DEBUG(("provider created"));
        provider->init(prop.getNode("provider"));

#ifndef ORB_IS_RTORB
        if (!provider->publishInterface(cprof.properties))
          {
            RTC_ERROR(("publishing interface information error"));
            InPortProviderFactory::instance().deleteObject(provider);
            return 0;
          }
#else // ORB_IS_RTORB
        // RtORB's copy ctor's bug?
        ::SDOPackage::NVList_ptr prop_ref(cprof.properties);
        if (!provider->publishInterface(*prop_ref))
          {
            RTC_ERROR(("publishing interface information error"));
            InPortProviderFactory::instance().deleteObject(provider);
            return 0;
          }
#endif // ORB_IS_RTORB
        return provider;
      }

    RTC_ERROR(("provider creation failed"));
    return 0;
  }

  /*!
   * @if jp
   * @brief OutPort consumer ¤ÎÀ¸À®
   * @else
   * @brief InPort provider creation
   * @endif
   */
  OutPortConsumer*
  InPortBase::createConsumer(const ConnectorProfile& cprof,
                             coil::Properties& prop)
  {
    if (!prop["interface_type"].empty() &&
        !coil::includes((coil::vstring)m_consumerTypes, prop["interface_type"]))
      {
        RTC_ERROR(("no consumer found"));
        RTC_DEBUG(("interface_type:  %s", prop["interface_type"].c_str()));
        RTC_DEBUG(("interface_types: %s",
                   coil::flatten(m_consumerTypes).c_str()));
        return 0;
      }
    
    RTC_DEBUG(("interface_type: %s", prop["interface_type"].c_str()));
    OutPortConsumer* consumer;
    consumer = OutPortConsumerFactory::
      instance().createObject(prop["interface_type"].c_str());
    
    if (consumer != 0)
      {
        RTC_DEBUG(("consumer created"));
        consumer->init(prop.getNode("consumer"));

        if (!consumer->subscribeInterface(cprof.properties))
          {
            RTC_ERROR(("interface subscription failed."));
            OutPortConsumerFactory::instance().deleteObject(consumer);
            return 0;
          }

        return consumer;
      }

    RTC_ERROR(("consumer creation failed"));
    return 0; 
  }
  
  /*!
   * @if jp
   * @brief InPortPushConnector ¤ÎÀ¸À®
   * @else
   * @brief InPortPushConnector creation
   * @endif
   */
  InPortConnector*
  InPortBase::createConnector(ConnectorProfile& cprof, coil::Properties& prop,
                              InPortProvider* provider)
  {
#ifndef ORB_IS_RTORB
    ConnectorInfo profile(cprof.name,
                          cprof.connector_id,
                          CORBA_SeqUtil::refToVstring(cprof.ports),
                          prop); 
#else // ORB_IS_RTORB
    ConnectorInfo profile(cprof.name,
                          cprof.connector_id,
                          CORBA_SeqUtil::
                          refToVstring(RTC::PortServiceList(cprof.ports)),
                          prop); 
#endif // ORB_IS_RTORB

    InPortConnector* connector(0);
    try
      {
        if (m_singlebuffer)
          {
            connector = new InPortPushConnector(profile, provider,
                                                m_listeners,
                                                m_thebuffer);
          }
        else
          {
            connector = new InPortPushConnector(profile, 
                                                provider,
                                                m_listeners);
          }

        if (connector == 0)
          {
            RTC_ERROR(("old compiler? new returned 0;"));
            return 0;
          }
        RTC_TRACE(("InPortPushConnector created"));

        m_connectors.push_back(connector);
        RTC_PARANOID(("connector push backed: %d", m_connectors.size()));
        return connector;
      }
    catch (std::bad_alloc& e)
      {
        RTC_ERROR(("InPortPushConnector creation failed"));
        return 0;
      }
    RTC_FATAL(("never comes here: createConnector()"));
    return 0;
  }

  /*!
   * @if jp
   * @brief InPortPullConnector ¤ÎÀ¸À®
   * @else
   * @brief InPortPullConnector creation
   * @endif
   */
  InPortConnector*
  InPortBase::createConnector(const ConnectorProfile& cprof,
                              coil::Properties& prop,
                              OutPortConsumer* consumer)
  {
#ifndef ORB_IS_RTORB
    ConnectorInfo profile(cprof.name,
                          cprof.connector_id,
                          CORBA_SeqUtil::refToVstring(cprof.ports),
                          prop); 
#else // ORB_IS_RTORB
    ConnectorInfo profile(cprof.name,
                          cprof.connector_id,
                          CORBA_SeqUtil::
                          refToVstring(RTC::PortServiceList(cprof.ports)),
                          prop); 
#endif // ORB_IS_RTORB

    InPortConnector* connector(0);
    try
      {
        if (m_singlebuffer)
          {
            connector = new InPortPullConnector(profile, consumer,
                                                m_listeners,
                                                m_thebuffer);
          }
        else
          {
            connector = new InPortPullConnector(profile, consumer, m_listeners);
          }

        if (connector == 0)
          {
            RTC_ERROR(("old compiler? new returned 0;"));
            return 0;
          }
        RTC_TRACE(("InPortPushConnector created"));

        // endian type set
        connector->setEndian(m_littleEndian);
        m_connectors.push_back(connector);
        RTC_PARANOID(("connector push backed: %d", m_connectors.size()));
        return connector;
      }
    catch (std::bad_alloc& e)
      {
        RTC_ERROR(("InPortPullConnector creation failed"));
        return 0;
      }
    RTC_FATAL(("never comes here: createConnector()"));
    return 0;
  }

};

     * ¤Ê¤É¤¬¥¢¥¯¥»¥¹²Äǽ¤Ë¤Ê¤ë¡£
     */
    std::string dflow_type(prop["dataflow_type"]);
    coil::normalize(dflow_type);

    if (dflow_type == "push")
      {
        RTC_DEBUG(("dataflow_type = push .... create PushConnector"));

        // create InPortProvider
        InPortProvider* provider(createProvider(cprof, prop));
        if (provider == 0)
          {
            RTC_ERROR(("InPort provider creation failed."));
            return RTC::BAD_PARAMETER;
          }

        // create InPortPushConnector
        InPortConnector* connector(createConnector(cprof, prop, provider));
        if (connector == 0)
          {
            RTC_ERROR(("PushConnector creation failed."));
            return RTC::RTC_ERROR;
          }

        // connector set
        provider->setConnector(connector);

        RTC_DEBUG(("publishInterface() successfully finished."));
        return RTC::RTC_OK;
      }
    else if (dflow_type == "pull")
      {
        RTC_DEBUG(("dataflow_type = pull .... do nothing"));
        return RTC::RTC_OK;
      }

    RTC_ERROR(("unsupported dataflow_type: %s", dflow_type.c_str()));
    return RTC::BAD_PARAMETER;
  }
  
  ReturnCode_t InPortBase::subscribeInterfaces(const ConnectorProfile& cprof)
  {
    RTC_TRACE(("subscribeInterfaces()"));

    // prop: [port.outport].
    coil::Properties prop(m_properties);
    {
      coil::Properties conn_prop;
      NVUtil::copyToProperties(conn_prop, cprof.properties);
      prop << conn_prop.getNode("dataport"); // marge ConnectorProfile
      /*
       * marge ConnectorProfile for buffer property.
       * e.g.
       *  prof[buffer.write.full_policy]
       *       << cprof[dataport.inport.buffer.write.full_policy]
       */
      prop << conn_prop.getNode("dataport.inport");
    }
    RTC_DEBUG(("ConnectorProfile::properties are as follows."));
    RTC_DEBUG_STR((prop));

    bool littleEndian; // true: little, false: big
    if (!checkEndian(prop, littleEndian))
      {
        RTC_ERROR(("unsupported endian"));
        return RTC::UNSUPPORTED;
      }
    RTC_TRACE(("endian: %s", littleEndian ? "little" : "big"));

    /*
     * ¤³¤³¤Ç, ConnectorProfile ¤«¤é¤Î properties ¤¬¥Þ¡¼¥¸¤µ¤ì¤¿¤¿¤á¡¢
     * prop["dataflow_type"]: ¥Ç¡¼¥¿¥Õ¥í¡¼¥¿¥¤¥×     * prop["interface_type"]: ¥¤¥ó¥¿¡¼¥Õ¥§¡¼¥¹¥¿¥¤¥×
     * ¤Ê¤É¤¬¥¢¥¯¥»¥¹²Äǽ¤Ë¤Ê¤ë¡£
     */
    std::string dflow_type(prop["dataflow_type"]);
    coil::normalize(dflow_type);

    if (dflow_type == "push")
      {
        RTC_DEBUG(("dataflow_type is push."));

        // setting endian type
        InPortConnector* conn(getConnectorById(cprof.connector_id));
        if (conn == 0)
          {
            RTC_ERROR(("specified connector not found: %s",
                       (const char*)cprof.connector_id));
            return RTC::RTC_ERROR;
          }
        conn->setEndian(littleEndian);

        RTC_DEBUG(("subscribeInterfaces() successfully finished."));
        return RTC::RTC_OK;
      }
    else if (dflow_type == "pull")
      {
        RTC_DEBUG(("dataflow_type is pull."));

        // create OutPortConsumer
        OutPortConsumer* consumer(createConsumer(cprof, prop));
        if (consumer == 0)
          {
            return RTC::BAD_PARAMETER;
          }

        // create InPortPullConnector
        InPortConnector* connector(createConnector(cprof, prop, consumer));
        if (connector == 0)
          {
            return RTC::RTC_ERROR;
          }

        RTC_DEBUG(("subscribeInterfaces() successfully finished."));
        return RTC::RTC_OK;
      }

    RTC_ERROR(("unsupported dataflow_type: %s", dflow_type.c_str()));
    return RTC::BAD_PARAMETER;
  }
  
  /*!
   * @if jp
   * @brief Interface¤Ø¤ÎÀܳ¤ò²ò½ü¤¹¤ë
   * @else
   * @brief Disconnect the interface connection
   * @endif
   */
  void
  InPortBase::unsubscribeInterfaces(const ConnectorProfile& connector_profile)
  {
    RTC_TRACE(("unsubscribeInterfaces()"));

    std::string id(connector_profile.connector_id);
    RTC_PARANOID(("connector_id: %s", id.c_str()));

    ConnectorList::iterator it(m_connectors.begin());

    while (it != m_connectors.end())
      {
        if (id == (*it)->id())
          {
            // Connector's dtor must call disconnect()
// RtORB's bug? This causes double delete and segmeentation fault.
#ifndef ORB_IS_RTORB
            delete *it;
#endif
            m_connectors.erase(it);
            RTC_TRACE(("delete connector: %s", id.c_str()));
            return;
          }
        ++it;
      }
    RTC_ERROR(("specified connector not found: %s", id.c_str()));
    return;
  }

  /*!
   * @if jp
   * @brief InPort provider ¤Î½é´ü²½
   * @else
   * @brief InPort provider initialization
   * @endif
   */
  void InPortBase::initProviders()
  {
    RTC_TRACE(("initProviders()"));

    // create InPort providers
    InPortProviderFactory& factory(InPortProviderFactory::instance());
    coil::vstring provider_types(factory.getIdentifiers());
    RTC_DEBUG(("available providers: %s",
               coil::flatten(provider_types).c_str()));

#ifndef RTC_NO_DATAPORTIF_ACTIVATION_OPTION
    if (m_properties.hasKey("provider_types") &&
        coil::normalize(m_properties["provider_types"]) != "all")
      {
        RTC_DEBUG(("allowed providers: %s",
                   m_properties["provider_types"].c_str()));

        coil::vstring temp_types(provider_types);
        provider_types.clear();
        coil::vstring
          active_types(coil::split(m_properties["provider_types"], ","));

        std::sort(temp_types.begin(), temp_types.end());
        std::sort(active_types.begin(), active_types.end());
        std::set_intersection(temp_types.begin(), temp_types.end(),
                              active_types.begin(), active_types.end(),
                              std::back_inserter(provider_types));
      }
#endif
    
    // InPortProvider supports "push" dataflow type
    if (provider_types.size() > 0)
      {
        RTC_DEBUG(("dataflow_type push is supported"));
        appendProperty("dataport.dataflow_type", "push");
        appendProperty("dataport.interface_type",
                       coil::flatten(provider_types).c_str());
      }

    m_providerTypes = provider_types;
  }

  /*!
   * @if jp
   * @brief OutPort consumer ¤Î½é´ü²½
   * @else
   * @brief OutPort consumer initialization
   * @endif
   */
  void InPortBase::initConsumers()
  {
    RTC_TRACE(("initConsumers()"));

    // create OuPort consumers
    OutPortConsumerFactory& factory(OutPortConsumerFactory::instance());
    coil::vstring consumer_types(factory.getIdentifiers());
    RTC_DEBUG(("available consumers: %s",
               coil::flatten(consumer_types).c_str()));

#ifndef RTC_NO_DATAPORTIF_ACTIVATION_OPTION
    if (m_properties.hasKey("consumer_types") &&
        coil::normalize(m_properties["consumer_types"]) != "all")
      {
        RTC_DEBUG(("allowed consumers: %s",
                   m_properties["consumer_types"].c_str()));

        coil::vstring temp_types(consumer_types);
        consumer_types.clear();
        coil::vstring
          active_types(coil::split(m_properties["consumer_types"], ","));

        std::sort(temp_types.begin(), temp_types.end());
        std::sort(active_types.begin(), active_types.end());
        std::set_intersection(temp_types.begin(), temp_types.end(),
                              active_types.begin(), active_types.end(),
                              std::back_inserter(consumer_types));
      }
#endif

    // OutPortConsumer supports "pull" dataflow type
    if (consumer_types.size() > 0)
      {
        RTC_PARANOID(("dataflow_type pull is supported"));
        appendProperty("dataport.dataflow_type", "pull");
        appendProperty("dataport.interface_type",
                       coil::flatten(consumer_types).c_str());
      }

    m_consumerTypes = consumer_types;
  }

  /*!
   * @if jp
   * @brief ¥·¥ê¥¢¥é¥¤¥¶¤Î¥¨¥ó¥Ç¥£¥¢¥ó¤ò¥Á¥§¥Ã¥¯¤¹¤ë
   * @else
   * @brief Checking endian flag of serializer
   * @endif
   */
  bool InPortBase::checkEndian(const coil::Properties& prop,
                               bool& littleEndian)
  {
        // old version check
    if(prop.hasKey("serializer") == NULL)
      {
        littleEndian = true;
        return true;
      }

    // endian type check
    std::string endian_type(prop.getProperty("serializer.cdr.endian", ""));
    RTC_DEBUG(("endian_type: %s", endian_type.c_str()));
    coil::normalize(endian_type);
    std::vector<std::string> endian(coil::split(endian_type, ","));

    if(endian.empty()) { return false; }
    if(endian[0] == "little")
      {
        littleEndian = true;
        return true;
      }
    else if(endian[0] == "big")
      {
        littleEndian = false;
        return true;
      }
    return false;
  }



  /*!
   * @if jp
   * @brief InPort provider ¤ÎÀ¸À®
   * @else
   * @brief InPort provider creation
   * @endif
   */
  InPortProvider*
  InPortBase::createProvider(ConnectorProfile& cprof, coil::Properties& prop)
  {
    if (!prop["interface_type"].empty() &&
        !coil::includes((coil::vstring)m_providerTypes, prop["interface_type"]))
      {
        RTC_ERROR(("no provider found"));
        RTC_DEBUG(("interface_type:  %s", prop["interface_type"].c_str()));
        RTC_DEBUG(("interface_types: %s",
                   coil::flatten(m_providerTypes).c_str()));
        return 0;
      }
    
    RTC_DEBUG(("interface_type: %s", prop["interface_type"].c_str()));
    InPortProvider* provider;
    provider = InPortProviderFactory::
      instance().createObject(prop["interface_type"].c_str());
    
    if (provider != 0)
      {
        RTC_DEBUG(("provider created"));
        provider->init(prop.getNode("provider"));

#ifndef ORB_IS_RTORB
        if (!provider->publishInterface(cprof.properties))
          {
            RTC_ERROR(("publishing interface information error"));
            InPortProviderFactory::instance().deleteObject(provider);
            return 0;
          }
#else // ORB_IS_RTORB
        // RtORB's copy ctor's bug?
        ::SDOPackage::NVList_ptr prop_ref(cprof.properties);
        if (!provider->publishInterface(*prop_ref))
          {
            RTC_ERROR(("publishing interface information error"));
            InPortProviderFactory::instance().deleteObject(provider);
            return 0;
          }
#endif // ORB_IS_RTORB
        return provider;
      }

    RTC_ERROR(("provider creation failed"));
    return 0;
  }

  /*!
   * @if jp
   * @brief OutPort consumer ¤ÎÀ¸À®
   * @else
   * @brief InPort provider creation
   * @endif
   */
  OutPortConsumer*
  InPortBase::createConsumer(const ConnectorProfile& cprof,
                             coil::Properties& prop)
  {
    if (!prop["interface_type"].empty() &&
        !coil::includes((coil::vstring)m_consumerTypes, prop["interface_type"]))
      {
        RTC_ERROR(("no consumer found"));
        RTC_DEBUG(("interface_type:  %s", prop["interface_type"].c_str()));
        RTC_DEBUG(("interface_types: %s",
                   coil::flatten(m_consumerTypes).c_str()));
        return 0;
      }
    
    RTC_DEBUG(("interface_type: %s", prop["interface_type"].c_str()));
    OutPortConsumer* consumer;
    consumer = OutPortConsumerFactory::
      instance().createObject(prop["interface_type"].c_str());
    
    if (consumer != 0)
      {
        RTC_DEBUG(("consumer created"));
        consumer->init(prop.getNode("consumer"));

        if (!consumer->subscribeInterface(cprof.properties))
          {
            RTC_ERROR(("interface subscription failed."));
            OutPortConsumerFactory::instance().deleteObject(consumer);
            return 0;
          }

        return consumer;
      }

    RTC_ERROR(("consumer creation failed"));
    return 0; 
  }
  
  /*!
   * @if jp
   * @brief InPortPushConnector ¤ÎÀ¸À®
   * @else
   * @brief InPortPushConnector creation
   * @endif
   */
  InPortConnector*
  InPortBase::createConnector(ConnectorProfile& cprof, coil::Properties& prop,
                              InPortProvider* provider)
  {
#ifndef ORB_IS_RTORB
    ConnectorInfo profile(cprof.name,
                          cprof.connector_id,
                          CORBA_SeqUtil::refToVstring(cprof.ports),
                          prop); 
#else // ORB_IS_RTORB
    ConnectorInfo profile(cprof.name,
                          cprof.connector_id,
                          CORBA_SeqUtil::
                          refToVstring(RTC::PortServiceList(cprof.ports)),
                          prop); 
#endif // ORB_IS_RTORB

    InPortConnector* connector(0);
    try
      {
        if (m_singlebuffer)
          {
            connector = new InPortPushConnector(profile, provider,
                                                m_listeners,
                                                m_thebuffer);
          }
        else
          {
            connector = new InPortPushConnector(profile, 
                                                provider,
                                                m_listeners);
          }

        if (connector == 0)
          {
            RTC_ERROR(("old compiler? new returned 0;"));
            return 0;
          }
        RTC_TRACE(("InPortPushConnector created"));

        m_connectors.push_back(connector);
        RTC_PARANOID(("connector push backed: %d", m_connectors.size()));
        return connector;
      }
    catch (std::bad_alloc& e)
      {
        RTC_ERROR(("InPortPushConnector creation failed"));
        return 0;
      }
    RTC_FATAL(("never comes here: createConnector()"));
    return 0;
  }

  /*!
   * @if jp
   * @brief InPortPullConnector ¤ÎÀ¸À®
   * @else
   * @brief InPortPullConnector creation
   * @endif
   */
  InPortConnector*
  InPortBase::createConnector(const ConnectorProfile& cprof,
                              coil::Properties& prop,
                              OutPortConsumer* consumer)
  {
#ifndef ORB_IS_RTORB
    ConnectorInfo profile(cprof.name,
                          cprof.connector_id,
                          CORBA_SeqUtil::refToVstring(cprof.ports),
                          prop); 
#else // ORB_IS_RTORB
    ConnectorInfo profile(cprof.name,
                          cprof.connector_id,
                          CORBA_SeqUtil::
                          refToVstring(RTC::PortServiceList(cprof.ports)),
                          prop); 
#endif // ORB_IS_RTORB

    InPortConnector* connector(0);
    try
      {
        if (m_singlebuffer)
          {
            connector = new InPortPullConnector(profile, consumer,
                                                m_listeners,
                                                m_thebuffer);
          }
        else
          {
            connector = new InPortPullConnector(profile, consumer, m_listeners);
          }

        if (connector == 0)
          {
            RTC_ERROR(("old compiler? new returned 0;"));
            return 0;
          }
        RTC_TRACE(("InPortPushConnector created"));

        // endian type set
        connector->setEndian(m_littleEndian);
        m_connectors.push_back(connector);
        RTC_PARANOID(("connector push backed: %d", m_connectors.size()));
        return connector;
      }
    catch (std::bad_alloc& e)
      {
        RTC_ERROR(("InPortPullConnector creation failed"));
        return 0;
      }
    RTC_FATAL(("never comes here: createConnector()"));
    return 0;
  }

};

     * prop["interface_type"]: ¥¤¥ó¥¿¡¼¥Õ¥§¡¼¥¹¥¿¥¤¥×     * ¤Ê¤É¤¬¥¢¥¯¥»¥¹²Äǽ¤Ë¤Ê¤ë¡£
     */
    std::string dflow_type(prop["dataflow_type"]);
    coil::normalize(dflow_type);

    if (dflow_type == "push")
      {
        RTC_DEBUG(("dataflow_type is push."));

        // setting endian type
        InPortConnector* conn(getConnectorById(cprof.connector_id));
        if (conn == 0)
          {
            RTC_ERROR(("specified connector not found: %s",
                       (const char*)cprof.connector_id));
            return RTC::RTC_ERROR;
          }
        conn->setEndian(littleEndian);

        RTC_DEBUG(("subscribeInterfaces() successfully finished."));
        return RTC::RTC_OK;
      }
    else if (dflow_type == "pull")
      {
        RTC_DEBUG(("dataflow_type is pull."));

        // create OutPortConsumer
        OutPortConsumer* consumer(createConsumer(cprof, prop));
        if (consumer == 0)
          {
            return RTC::BAD_PARAMETER;
          }

        // create InPortPullConnector
        InPortConnector* connector(createConnector(cprof, prop, consumer));
        if (connector == 0)
          {
            return RTC::RTC_ERROR;
          }

        RTC_DEBUG(("subscribeInterfaces() successfully finished."));
        return RTC::RTC_OK;
      }

    RTC_ERROR(("unsupported dataflow_type: %s", dflow_type.c_str()));
    return RTC::BAD_PARAMETER;
  }
  
  /*!
   * @if jp
   * @brief Interface¤Ø¤ÎÀܳ¤ò²ò½ü¤¹¤ë
   * @else
   * @brief Disconnect the interface connection
   * @endif
   */
  void
  InPortBase::unsubscribeInterfaces(const ConnectorProfile& connector_profile)
  {
    RTC_TRACE(("unsubscribeInterfaces()"));

    std::string id(connector_profile.connector_id);
    RTC_PARANOID(("connector_id: %s", id.c_str()));

    ConnectorList::iterator it(m_connectors.begin());

    while (it != m_connectors.end())
      {
        if (id == (*it)->id())
          {
            // Connector's dtor must call disconnect()
// RtORB's bug? This causes double delete and segmeentation fault.
#ifndef ORB_IS_RTORB
            delete *it;
#endif
            m_connectors.erase(it);
            RTC_TRACE(("delete connector: %s", id.c_str()));
            return;
          }
        ++it;
      }
    RTC_ERROR(("specified connector not found: %s", id.c_str()));
    return;
  }

  /*!
   * @if jp
   * @brief InPort provider ¤Î½é´ü²½
   * @else
   * @brief InPort provider initialization
   * @endif
   */
  void InPortBase::initProviders()
  {
    RTC_TRACE(("initProviders()"));

    // create InPort providers
    InPortProviderFactory& factory(InPortProviderFactory::instance());
    coil::vstring provider_types(factory.getIdentifiers());
    RTC_DEBUG(("available providers: %s",
               coil::flatten(provider_types).c_str()));

#ifndef RTC_NO_DATAPORTIF_ACTIVATION_OPTION
    if (m_properties.hasKey("provider_types") &&
        coil::normalize(m_properties["provider_types"]) != "all")
      {
        RTC_DEBUG(("allowed providers: %s",
                   m_properties["provider_types"].c_str()));

        coil::vstring temp_types(provider_types);
        provider_types.clear();
        coil::vstring
          active_types(coil::split(m_properties["provider_types"], ","));

        std::sort(temp_types.begin(), temp_types.end());
        std::sort(active_types.begin(), active_types.end());
        std::set_intersection(temp_types.begin(), temp_types.end(),
                              active_types.begin(), active_types.end(),
                              std::back_inserter(provider_types));
      }
#endif
    
    // InPortProvider supports "push" dataflow type
    if (provider_types.size() > 0)
      {
        RTC_DEBUG(("dataflow_type push is supported"));
        appendProperty("dataport.dataflow_type", "push");
        appendProperty("dataport.interface_type",
                       coil::flatten(provider_types).c_str());
      }

    m_providerTypes = provider_types;
  }

  /*!
   * @if jp
   * @brief OutPort consumer ¤Î½é´ü²½
   * @else
   * @brief OutPort consumer initialization
   * @endif
   */
  void InPortBase::initConsumers()
  {
    RTC_TRACE(("initConsumers()"));

    // create OuPort consumers
    OutPortConsumerFactory& factory(OutPortConsumerFactory::instance());
    coil::vstring consumer_types(factory.getIdentifiers());
    RTC_DEBUG(("available consumers: %s",
               coil::flatten(consumer_types).c_str()));

#ifndef RTC_NO_DATAPORTIF_ACTIVATION_OPTION
    if (m_properties.hasKey("consumer_types") &&
        coil::normalize(m_properties["consumer_types"]) != "all")
      {
        RTC_DEBUG(("allowed consumers: %s",
                   m_properties["consumer_types"].c_str()));

        coil::vstring temp_types(consumer_types);
        consumer_types.clear();
        coil::vstring
          active_types(coil::split(m_properties["consumer_types"], ","));

        std::sort(temp_types.begin(), temp_types.end());
        std::sort(active_types.begin(), active_types.end());
        std::set_intersection(temp_types.begin(), temp_types.end(),
                              active_types.begin(), active_types.end(),
                              std::back_inserter(consumer_types));
      }
#endif

    // OutPortConsumer supports "pull" dataflow type
    if (consumer_types.size() > 0)
      {
        RTC_PARANOID(("dataflow_type pull is supported"));
        appendProperty("dataport.dataflow_type", "pull");
        appendProperty("dataport.interface_type",
                       coil::flatten(consumer_types).c_str());
      }

    m_consumerTypes = consumer_types;
  }

  /*!
   * @if jp
   * @brief ¥·¥ê¥¢¥é¥¤¥¶¤Î¥¨¥ó¥Ç¥£¥¢¥ó¤ò¥Á¥§¥Ã¥¯¤¹¤ë
   * @else
   * @brief Checking endian flag of serializer
   * @endif
   */
  bool InPortBase::checkEndian(const coil::Properties& prop,
                               bool& littleEndian)
  {
        // old version check
    if(prop.hasKey("serializer") == NULL)
      {
        littleEndian = true;
        return true;
      }

    // endian type check
    std::string endian_type(prop.getProperty("serializer.cdr.endian", ""));
    RTC_DEBUG(("endian_type: %s", endian_type.c_str()));
    coil::normalize(endian_type);
    std::vector<std::string> endian(coil::split(endian_type, ","));

    if(endian.empty()) { return false; }
    if(endian[0] == "little")
      {
        littleEndian = true;
        return true;
      }
    else if(endian[0] == "big")
      {
        littleEndian = false;
        return true;
      }
    return false;
  }



  /*!
   * @if jp
   * @brief InPort provider ¤ÎÀ¸À®
   * @else
   * @brief InPort provider creation
   * @endif
   */
  InPortProvider*
  InPortBase::createProvider(ConnectorProfile& cprof, coil::Properties& prop)
  {
    if (!prop["interface_type"].empty() &&
        !coil::includes((coil::vstring)m_providerTypes, prop["interface_type"]))
      {
        RTC_ERROR(("no provider found"));
        RTC_DEBUG(("interface_type:  %s", prop["interface_type"].c_str()));
        RTC_DEBUG(("interface_types: %s",
                   coil::flatten(m_providerTypes).c_str()));
        return 0;
      }
    
    RTC_DEBUG(("interface_type: %s", prop["interface_type"].c_str()));
    InPortProvider* provider;
    provider = InPortProviderFactory::
      instance().createObject(prop["interface_type"].c_str());
    
    if (provider != 0)
      {
        RTC_DEBUG(("provider created"));
        provider->init(prop.getNode("provider"));

#ifndef ORB_IS_RTORB
        if (!provider->publishInterface(cprof.properties))
          {
            RTC_ERROR(("publishing interface information error"));
            InPortProviderFactory::instance().deleteObject(provider);
            return 0;
          }
#else // ORB_IS_RTORB
        // RtORB's copy ctor's bug?
        ::SDOPackage::NVList_ptr prop_ref(cprof.properties);
        if (!provider->publishInterface(*prop_ref))
          {
            RTC_ERROR(("publishing interface information error"));
            InPortProviderFactory::instance().deleteObject(provider);
            return 0;
          }
#endif // ORB_IS_RTORB
        return provider;
      }

    RTC_ERROR(("provider creation failed"));
    return 0;
  }

  /*!
   * @if jp
   * @brief OutPort consumer ¤ÎÀ¸À®
   * @else
   * @brief InPort provider creation
   * @endif
   */
  OutPortConsumer*
  InPortBase::createConsumer(const ConnectorProfile& cprof,
                             coil::Properties& prop)
  {
    if (!prop["interface_type"].empty() &&
        !coil::includes((coil::vstring)m_consumerTypes, prop["interface_type"]))
      {
        RTC_ERROR(("no consumer found"));
        RTC_DEBUG(("interface_type:  %s", prop["interface_type"].c_str()));
        RTC_DEBUG(("interface_types: %s",
                   coil::flatten(m_consumerTypes).c_str()));
        return 0;
      }
    
    RTC_DEBUG(("interface_type: %s", prop["interface_type"].c_str()));
    OutPortConsumer* consumer;
    consumer = OutPortConsumerFactory::
      instance().createObject(prop["interface_type"].c_str());
    
    if (consumer != 0)
      {
        RTC_DEBUG(("consumer created"));
        consumer->init(prop.getNode("consumer"));

        if (!consumer->subscribeInterface(cprof.properties))
          {
            RTC_ERROR(("interface subscription failed."));
            OutPortConsumerFactory::instance().deleteObject(consumer);
            return 0;
          }

        return consumer;
      }

    RTC_ERROR(("consumer creation failed"));
    return 0; 
  }
  
  /*!
   * @if jp
   * @brief InPortPushConnector ¤ÎÀ¸À®
   * @else
   * @brief InPortPushConnector creation
   * @endif
   */
  InPortConnector*
  InPortBase::createConnector(ConnectorProfile& cprof, coil::Properties& prop,
                              InPortProvider* provider)
  {
#ifndef ORB_IS_RTORB
    ConnectorInfo profile(cprof.name,
                          cprof.connector_id,
                          CORBA_SeqUtil::refToVstring(cprof.ports),
                          prop); 
#else // ORB_IS_RTORB
    ConnectorInfo profile(cprof.name,
                          cprof.connector_id,
                          CORBA_SeqUtil::
                          refToVstring(RTC::PortServiceList(cprof.ports)),
                          prop); 
#endif // ORB_IS_RTORB

    InPortConnector* connector(0);
    try
      {
        if (m_singlebuffer)
          {
            connector = new InPortPushConnector(profile, provider,
                                                m_listeners,
                                                m_thebuffer);
          }
        else
          {
            connector = new InPortPushConnector(profile, 
                                                provider,
                                                m_listeners);
          }

        if (connector == 0)
          {
            RTC_ERROR(("old compiler? new returned 0;"));
            return 0;
          }
        RTC_TRACE(("InPortPushConnector created"));

        m_connectors.push_back(connector);
        RTC_PARANOID(("connector push backed: %d", m_connectors.size()));
        return connector;
      }
    catch (std::bad_alloc& e)
      {
        RTC_ERROR(("InPortPushConnector creation failed"));
        return 0;
      }
    RTC_FATAL(("never comes here: createConnector()"));
    return 0;
  }

  /*!
   * @if jp
   * @brief InPortPullConnector ¤ÎÀ¸À®
   * @else
   * @brief InPortPullConnector creation
   * @endif
   */
  InPortConnector*
  InPortBase::createConnector(const ConnectorProfile& cprof,
                              coil::Properties& prop,
                              OutPortConsumer* consumer)
  {
#ifndef ORB_IS_RTORB
    ConnectorInfo profile(cprof.name,
                          cprof.connector_id,
                          CORBA_SeqUtil::refToVstring(cprof.ports),
                          prop); 
#else // ORB_IS_RTORB
    ConnectorInfo profile(cprof.name,
                          cprof.connector_id,
                          CORBA_SeqUtil::
                          refToVstring(RTC::PortServiceList(cprof.ports)),
                          prop); 
#endif // ORB_IS_RTORB

    InPortConnector* connector(0);
    try
      {
        if (m_singlebuffer)
          {
            connector = new InPortPullConnector(profile, consumer,
                                                m_listeners,
                                                m_thebuffer);
          }
        else
          {
            connector = new InPortPullConnector(profile, consumer, m_listeners);
          }

        if (connector == 0)
          {
            RTC_ERROR(("old compiler? new returned 0;"));
            return 0;
          }
        RTC_TRACE(("InPortPushConnector created"));

        // endian type set
        connector->setEndian(m_littleEndian);
        m_connectors.push_back(connector);
        RTC_PARANOID(("connector push backed: %d", m_connectors.size()));
        return connector;
      }
    catch (std::bad_alloc& e)
      {
        RTC_ERROR(("InPortPullConnector creation failed"));
        return 0;
      }
    RTC_FATAL(("never comes here: createConnector()"));
    return 0;
  }

};

     * ¤Ê¤É¤¬¥¢¥¯¥»¥¹²Äǽ¤Ë¤Ê¤ë¡£
     */
    std::string dflow_type(prop["dataflow_type"]);
    coil::normalize(dflow_type);

    if (dflow_type == "push")
      {
        RTC_DEBUG(("dataflow_type is push."));

        // setting endian type
        InPortConnector* conn(getConnectorById(cprof.connector_id));
        if (conn == 0)
          {
            RTC_ERROR(("specified connector not found: %s",
                       (const char*)cprof.connector_id));
            return RTC::RTC_ERROR;
          }
        conn->setEndian(littleEndian);

        RTC_DEBUG(("subscribeInterfaces() successfully finished."));
        return RTC::RTC_OK;
      }
    else if (dflow_type == "pull")
      {
        RTC_DEBUG(("dataflow_type is pull."));

        // create OutPortConsumer
        OutPortConsumer* consumer(createConsumer(cprof, prop));
        if (consumer == 0)
          {
            return RTC::BAD_PARAMETER;
          }

        // create InPortPullConnector
        InPortConnector* connector(createConnector(cprof, prop, consumer));
        if (connector == 0)
          {
            return RTC::RTC_ERROR;
          }

        RTC_DEBUG(("subscribeInterfaces() successfully finished."));
        return RTC::RTC_OK;
      }

    RTC_ERROR(("unsupported dataflow_type: %s", dflow_type.c_str()));
    return RTC::BAD_PARAMETER;
  }
  
  void
  InPortBase::unsubscribeInterfaces(const ConnectorProfile& connector_profile)
  {
    RTC_TRACE(("unsubscribeInterfaces()"));

    std::string id(connector_profile.connector_id);
    RTC_PARANOID(("connector_id: %s", id.c_str()));

    ConnectorList::iterator it(m_connectors.begin());

    while (it != m_connectors.end())
      {
        if (id == (*it)->id())
          {
            // Connector's dtor must call disconnect()
// RtORB's bug? This causes double delete and segmeentation fault.
#ifndef ORB_IS_RTORB
            delete *it;
#endif
            m_connectors.erase(it);
            RTC_TRACE(("delete connector: %s", id.c_str()));
            return;
          }
        ++it;
      }
    RTC_ERROR(("specified connector not found: %s", id.c_str()));
    return;
  }

  void InPortBase::initProviders()
  {
    RTC_TRACE(("initProviders()"));

    // create InPort providers
    InPortProviderFactory& factory(InPortProviderFactory::instance());
    coil::vstring provider_types(factory.getIdentifiers());
    RTC_DEBUG(("available providers: %s",
               coil::flatten(provider_types).c_str()));

#ifndef RTC_NO_DATAPORTIF_ACTIVATION_OPTION
    if (m_properties.hasKey("provider_types") &&
        coil::normalize(m_properties["provider_types"]) != "all")
      {
        RTC_DEBUG(("allowed providers: %s",
                   m_properties["provider_types"].c_str()));

        coil::vstring temp_types(provider_types);
        provider_types.clear();
        coil::vstring
          active_types(coil::split(m_properties["provider_types"], ","));

        std::sort(temp_types.begin(), temp_types.end());
        std::sort(active_types.begin(), active_types.end());
        std::set_intersection(temp_types.begin(), temp_types.end(),
                              active_types.begin(), active_types.end(),
                              std::back_inserter(provider_types));
      }
#endif
    
    // InPortProvider supports "push" dataflow type
    if (provider_types.size() > 0)
      {
        RTC_DEBUG(("dataflow_type push is supported"));
        appendProperty("dataport.dataflow_type", "push");
        appendProperty("dataport.interface_type",
                       coil::flatten(provider_types).c_str());
      }

    m_providerTypes = provider_types;
  }

  void InPortBase::initConsumers()
  {
    RTC_TRACE(("initConsumers()"));

    // create OuPort consumers
    OutPortConsumerFactory& factory(OutPortConsumerFactory::instance());
    coil::vstring consumer_types(factory.getIdentifiers());
    RTC_DEBUG(("available consumers: %s",
               coil::flatten(consumer_types).c_str()));

#ifndef RTC_NO_DATAPORTIF_ACTIVATION_OPTION
    if (m_properties.hasKey("consumer_types") &&
        coil::normalize(m_properties["consumer_types"]) != "all")
      {
        RTC_DEBUG(("allowed consumers: %s",
                   m_properties["consumer_types"].c_str()));

        coil::vstring temp_types(consumer_types);
        consumer_types.clear();
        coil::vstring
          active_types(coil::split(m_properties["consumer_types"], ","));

        std::sort(temp_types.begin(), temp_types.end());
        std::sort(active_types.begin(), active_types.end());
        std::set_intersection(temp_types.begin(), temp_types.end(),
                              active_types.begin(), active_types.end(),
                              std::back_inserter(consumer_types));
      }
#endif

    // OutPortConsumer supports "pull" dataflow type
    if (consumer_types.size() > 0)
      {
        RTC_PARANOID(("dataflow_type pull is supported"));
        appendProperty("dataport.dataflow_type", "pull");
        appendProperty("dataport.interface_type",
                       coil::flatten(consumer_types).c_str());
      }

    m_consumerTypes = consumer_types;
  }

  bool InPortBase::checkEndian(const coil::Properties& prop,
                               bool& littleEndian)
  {
        // old version check
    if(prop.hasKey("serializer") == NULL)
      {
        littleEndian = true;
        return true;
      }

    // endian type check
    std::string endian_type(prop.getProperty("serializer.cdr.endian", ""));
    RTC_DEBUG(("endian_type: %s", endian_type.c_str()));
    coil::normalize(endian_type);
    std::vector<std::string> endian(coil::split(endian_type, ","));

    if(endian.empty()) { return false; }
    if(endian[0] == "little")
      {
        littleEndian = true;
        return true;
      }
    else if(endian[0] == "big")
      {
        littleEndian = false;
        return true;
      }
    return false;
  }



  InPortProvider*
  InPortBase::createProvider(ConnectorProfile& cprof, coil::Properties& prop)
  {
    if (!prop["interface_type"].empty() &&
        !coil::includes((coil::vstring)m_providerTypes, prop["interface_type"]))
      {
        RTC_ERROR(("no provider found"));
        RTC_DEBUG(("interface_type:  %s", prop["interface_type"].c_str()));
        RTC_DEBUG(("interface_types: %s",
                   coil::flatten(m_providerTypes).c_str()));
        return 0;
      }
    
    RTC_DEBUG(("interface_type: %s", prop["interface_type"].c_str()));
    InPortProvider* provider;
    provider = InPortProviderFactory::
      instance().createObject(prop["interface_type"].c_str());
    
    if (provider != 0)
      {
        RTC_DEBUG(("provider created"));
        provider->init(prop.getNode("provider"));

#ifndef ORB_IS_RTORB
        if (!provider->publishInterface(cprof.properties))
          {
            RTC_ERROR(("publishing interface information error"));
            InPortProviderFactory::instance().deleteObject(provider);
            return 0;
          }
#else // ORB_IS_RTORB
        // RtORB's copy ctor's bug?
        ::SDOPackage::NVList_ptr prop_ref(cprof.properties);
        if (!provider->publishInterface(*prop_ref))
          {
            RTC_ERROR(("publishing interface information error"));
            InPortProviderFactory::instance().deleteObject(provider);
            return 0;
          }
#endif // ORB_IS_RTORB
        return provider;
      }

    RTC_ERROR(("provider creation failed"));
    return 0;
  }

  OutPortConsumer*
  InPortBase::createConsumer(const ConnectorProfile& cprof,
                             coil::Properties& prop)
  {
    if (!prop["interface_type"].empty() &&
        !coil::includes((coil::vstring)m_consumerTypes, prop["interface_type"]))
      {
        RTC_ERROR(("no consumer found"));
        RTC_DEBUG(("interface_type:  %s", prop["interface_type"].c_str()));
        RTC_DEBUG(("interface_types: %s",
                   coil::flatten(m_consumerTypes).c_str()));
        return 0;
      }
    
    RTC_DEBUG(("interface_type: %s", prop["interface_type"].c_str()));
    OutPortConsumer* consumer;
    consumer = OutPortConsumerFactory::
      instance().createObject(prop["interface_type"].c_str());
    
    if (consumer != 0)
      {
        RTC_DEBUG(("consumer created"));
        consumer->init(prop.getNode("consumer"));

        if (!consumer->subscribeInterface(cprof.properties))
          {
            RTC_ERROR(("interface subscription failed."));
            OutPortConsumerFactory::instance().deleteObject(consumer);
            return 0;
          }

        return consumer;
      }

    RTC_ERROR(("consumer creation failed"));
    return 0; 
  }
  
  InPortConnector*
  InPortBase::createConnector(ConnectorProfile& cprof, coil::Properties& prop,
                              InPortProvider* provider)
  {
#ifndef ORB_IS_RTORB
    ConnectorInfo profile(cprof.name,
                          cprof.connector_id,
                          CORBA_SeqUtil::refToVstring(cprof.ports),
                          prop); 
#else // ORB_IS_RTORB
    ConnectorInfo profile(cprof.name,
                          cprof.connector_id,
                          CORBA_SeqUtil::
                          refToVstring(RTC::PortServiceList(cprof.ports)),
                          prop); 
#endif // ORB_IS_RTORB

    InPortConnector* connector(0);
    try
      {
        if (m_singlebuffer)
          {
            connector = new InPortPushConnector(profile, provider,
                                                m_listeners,
                                                m_thebuffer);
          }
        else
          {
            connector = new InPortPushConnector(profile, 
                                                provider,
                                                m_listeners);
          }

        if (connector == 0)
          {
            RTC_ERROR(("old compiler? new returned 0;"));
            return 0;
          }
        RTC_TRACE(("InPortPushConnector created"));

        m_connectors.push_back(connector);
        RTC_PARANOID(("connector push backed: %d", m_connectors.size()));
        return connector;
      }
    catch (std::bad_alloc& e)
      {
        RTC_ERROR(("InPortPushConnector creation failed"));
        return 0;
      }
    RTC_FATAL(("never comes here: createConnector()"));
    return 0;
  }

  InPortConnector*
  InPortBase::createConnector(const ConnectorProfile& cprof,
                              coil::Properties& prop,
                              OutPortConsumer* consumer)
  {
#ifndef ORB_IS_RTORB
    ConnectorInfo profile(cprof.name,
                          cprof.connector_id,
                          CORBA_SeqUtil::refToVstring(cprof.ports),
                          prop); 
#else // ORB_IS_RTORB
    ConnectorInfo profile(cprof.name,
                          cprof.connector_id,
                          CORBA_SeqUtil::
                          refToVstring(RTC::PortServiceList(cprof.ports)),
                          prop); 
#endif // ORB_IS_RTORB

    InPortConnector* connector(0);
    try
      {
        if (m_singlebuffer)
          {
            connector = new InPortPullConnector(profile, consumer,
                                                m_listeners,
                                                m_thebuffer);
          }
        else
          {
            connector = new InPortPullConnector(profile, consumer, m_listeners);
          }

        if (connector == 0)
          {
            RTC_ERROR(("old compiler? new returned 0;"));
            return 0;
          }
        RTC_TRACE(("InPortPushConnector created"));

        // endian type set
        connector->setEndian(m_littleEndian);
        m_connectors.push_back(connector);
        RTC_PARANOID(("connector push backed: %d", m_connectors.size()));
        return connector;
      }
    catch (std::bad_alloc& e)
      {
        RTC_ERROR(("InPortPullConnector creation failed"));
        return 0;
      }
    RTC_FATAL(("never comes here: createConnector()"));
    return 0;
  }

};