00001 /********************************************************************* 00002 * Software License Agreement (BSD License) 00003 * 00004 * Copyright (c) 2009, Willow Garage, Inc. 00005 * All rights reserved. 00006 * 00007 * Redistribution and use in source and binary forms, with or without 00008 * modification, are permitted provided that the following conditions 00009 * are met: 00010 * 00011 * * Redistributions of source code must retain the above copyright 00012 * notice, this list of conditions and the following disclaimer. 00013 * * Redistributions in binary form must reproduce the above 00014 * copyright notice, this list of conditions and the following 00015 * disclaimer in the documentation and/or other materials provided 00016 * with the distribution. 00017 * * Neither the name of the Willow Garage nor the names of its 00018 * contributors may be used to endorse or promote products derived 00019 * from this software without specific prior written permission. 00020 * 00021 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00022 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00023 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 00024 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 00025 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 00026 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 00027 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 00028 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 00029 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00030 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 00031 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00032 * POSSIBILITY OF SUCH DAMAGE. 00033 *********************************************************************/ 00034 00035 // Author(s): Matei Ciocarlie 00036 00037 #include "household_objects_database/objects_database.h" 00038 00039 #include <database_interface/db_filters.h> 00040 00041 #include "household_objects_database/database_task.h" 00042 00043 using namespace database_interface; 00044 00045 namespace household_objects_database { 00046 00047 bool ObjectsDatabase::acquireNextTask(std::vector< boost::shared_ptr<DatabaseTask> > &task) 00048 { 00049 //first get and mark (atomically) the task id 00050 DatabaseTaskID id_example; 00051 std::vector< boost::shared_ptr<DatabaseTaskID> > id_vec; 00052 if ( !getList<DatabaseTaskID>(id_vec, id_example, "") ) 00053 { 00054 ROS_ERROR("Failed to get the id of the next task to be run"); 00055 return false; 00056 } 00057 if (id_vec.empty()) 00058 { 00059 //no task to be run 00060 return true; 00061 } 00062 if (id_vec.size() != 1) 00063 { 00064 ROS_ERROR("Next task acquisition returned more than one result"); 00065 return false; 00066 } 00067 //get the actual task id 00068 int id = id_vec[0]->id_.get(); 00069 std::stringstream idstr; 00070 idstr << id; 00071 std::string where_clause("dbase_task_id=" + idstr.str()); 00072 //fill in the rest 00073 if (!getList<DatabaseTask>(task, where_clause) || task.size() != 1 ) 00074 { 00075 ROS_ERROR("Acquire next task: failed to populate entry"); 00076 return false; 00077 } 00078 return true; 00079 } 00080 00081 }//namespace