/tmp/ws/src/rtt/rtt/ConfigurationInterface.hpp

Retrieve a Attribute by name. Returns zero if no Attribute by that name exists.

Attribute<double> d_attr = getAttribute("Xval");

See also

addAttribute to add an Attribute.

/***************************************************************************
  tag: Peter Soetens  Tue Dec 21 22:43:08 CET 2004  ConfigurationInterface.hpp

                        ConfigurationInterface.hpp -  description
                           -------------------
    begin                : Tue December 21 2004
    copyright            : (C) 2004 Peter Soetens
    email                : peter.soetens@mech.kuleuven.ac.be

 ***************************************************************************
 *   This library is free software; you can redistribute it and/or         *
 *   modify it under the terms of the GNU General Public                   *
 *   License as published by the Free Software Foundation;                 *
 *   version 2 of the License.                                             *
 *                                                                         *
 *   As a special exception, you may use this file as part of a free       *
 *   software library without restriction.  Specifically, if other files   *
 *   instantiate templates or use macros or inline functions from this     *
 *   file, or you compile this file and link it with other files to        *
 *   produce an executable, this file does not by itself cause the         *
 *   resulting executable to be covered by the GNU General Public          *
 *   License.  This exception does not however invalidate any other        *
 *   reasons why the executable file might be covered by the GNU General   *
 *   Public License.                                                       *
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 *   This library is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     *
 *   Lesser General Public License for more details.                       *
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 *   Foundation, Inc., 59 Temple Place,                                    *
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 ***************************************************************************/


#ifndef RTT_CONFIGURATIONINTERFACE_HPP
#define RTT_CONFIGURATIONINTERFACE_HPP

#include <memory>
#include <map>
#include "Attribute.hpp"
#include "internal/DataSources.hpp"
#include "base/DataObjectInterface.hpp"
#include "Property.hpp"
#include "PropertyBag.hpp"

namespace RTT
{
    class RTT_API ConfigurationInterface
    {
    public:

        ConfigurationInterface();
        ~ConfigurationInterface();

        typedef std::vector<std::string> AttributeNames;

        typedef std::vector<base::AttributeBase*> AttributeObjects;

        void clear();

        bool hasAttribute( const std::string& name ) const;

        template<class T>
        bool addAttribute( const std::string& name, T& attr) {
            if ( !chkPtr("addAttribute", name, &attr) ) return false;
            Alias a(name, new internal::ReferenceDataSource<T>(attr));
            return this->addAttribute( a );
        }

        template<class T>
        Attribute<T>& addAttribute( const std::string& name, Attribute<T>& attr) {
            if ( !chkPtr("addAttribute", name, &attr) ) return attr;
            if ( !attr.ready() )
                attr = Attribute<T>(name);
            else
                attr.setName(name);
            this->addAttribute( attr );
            assert(attr.ready());
            return attr;
        }

        template<class T>
        bool addConstant( const std::string& name, const T& cnst) {
            if ( !chkPtr("addConstant", name, &cnst) ) return false;
            Alias a(name, new internal::ConstReferenceDataSource<T>(cnst));
            return this->addAttribute( a );
        }

        template<class T>
        Constant<T>& addConstant( const std::string& name, Constant<T>& cnst) {
            if ( !chkPtr("addConstant", name, &cnst) ) return cnst;
            if ( !cnst.ready() )
                cnst = Constant<T>(name, T());
            else
                cnst.setName(name);
            this->addConstant( cnst );
            assert(cnst.ready());
            return cnst;
        }

        template<class T>
        Property<T>& addProperty( const std::string& name, T& prop) {
            if ( !chkPtr("addProperty", name, &prop) ) return internal::NA<Property<T>& >::na();
            return this->properties()->addProperty( name, prop );
        }

        template<class T>
        Property<T>& addProperty( const std::string& name, Property<T>& prop) {
            if ( !chkPtr("addProperty", name, &prop) ) return prop;
            if ( !prop.ready() )
                prop = Property<T>(name);
            else
                prop.setName(name);
            this->properties()->addProperty( prop );
            assert(prop.ready());
            return prop;
        }

        bool addAttribute( base::AttributeBase& a )
        {
            if ( !chkPtr("addAttribute", "AttributeBase", &a) ) return false;
            return a.getDataSource() ? setValue( a.clone() ) : false;
        }

        base::AttributeBase* getAttribute( const std::string& name ) const
        {
            return this->getValue( name );
        }

        void removeAttribute( const std::string& name );

        bool addConstant( base::AttributeBase& c)
        {
            return c.getDataSource() ? setValue( c.clone() ) :  false;
        }

        base::AttributeBase* getConstant( const std::string& name ) const
        {
            return this->getValue( name );
        }

        bool hasProperty( const std::string& name ) const;

        bool addProperty( base::PropertyBase& pb );

        bool removeProperty( base::PropertyBase& p );

        base::PropertyBase* getProperty(const std::string& name) const
        {
            return bag.find(name);
        }

        bool setValue( base::AttributeBase* ab );

        base::AttributeBase* getValue( const std::string& name ) const;

        bool removeValue(const std::string& name );

        ConfigurationInterface* copy( std::map<const base::DataSourceBase*, base::DataSourceBase*>& repl, bool instantiate ) const;

        void loadValues( AttributeObjects const& new_values);

        AttributeObjects const& getValues() const {
            return values;
        }

        AttributeNames getAttributeNames() const;

        PropertyBag* properties();

    protected:
        bool chkPtr(const std::string &where, const std::string& name, const void* ptr);
        typedef std::vector<base::AttributeBase*> map_t;
        map_t values;
        PropertyBag bag;
    };
}

#endif