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/*
-----------------------------------------------------------------------
Copyright: 2010-2015, iMinds-Vision Lab, University of Antwerp
2014-2015, CWI, Amsterdam
Contact: astra@uantwerpen.be
Website: http://sf.net/projects/astra-toolbox
This file is part of the ASTRA Toolbox.
The ASTRA Toolbox 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, either version 3 of the License, or
(at your option) any later version.
The ASTRA Toolbox 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with the ASTRA Toolbox. If not, see <http://www.gnu.org/licenses/>.
-----------------------------------------------------------------------
$Id$
*/
#ifndef _INC_ASTRA_ASTRAOBJECTFACTORY
#define _INC_ASTRA_ASTRAOBJECTFACTORY
#include "Globals.h"
#include "Config.h"
#include "Singleton.h"
#include "Utilities.h"
#include "TypeList.h"
#include "ProjectorTypelist.h"
#include "AlgorithmTypelist.h"
namespace astra {
/**
* This class contains functionality to create data objects based on their type or on a configuration object.
*/
template <typename T, typename TypeList>
class CAstraObjectFactory : public Singleton<CAstraObjectFactory<T, TypeList> > {
public:
/** A default constructor that contains not a single line of code.
*/
CAstraObjectFactory();
/** Destructor.
*/
~CAstraObjectFactory();
/** Create, but don't initialize, a new object.
*
* @param _sType Type of the new object.
* @return Pointer to a new, uninitialized object.
*/
T* create(std::string _sType);
/** Create and initialize a new object.
*
* @param _cfg Configuration object to create and initialize a new object.
* @return Pointer to a new, initialized projector.
*/
T* create(const Config& _cfg);
/** Find a plugin.
*
* @param _sType Name of plugin to find.
* @return Pointer to a new, uninitialized object, or NULL if not found.
*/
T* findPlugin(std::string _sType);
};
//----------------------------------------------------------------------------------------
// Constructor
template <typename T, typename TypeList>
CAstraObjectFactory<T, TypeList>::CAstraObjectFactory()
{
}
//----------------------------------------------------------------------------------------
// Destructor
template <typename T, typename TypeList>
CAstraObjectFactory<T, TypeList>::~CAstraObjectFactory()
{
}
//----------------------------------------------------------------------------------------
// Hook for finding plugin in registered plugins.
template <typename T, typename TypeList>
T* CAstraObjectFactory<T, TypeList>::findPlugin(std::string _sType)
{
return NULL;
}
//----------------------------------------------------------------------------------------
// Create
template <typename T, typename TypeList>
T* CAstraObjectFactory<T, TypeList>::create(std::string _sType)
{
functor_find<T> finder = functor_find<T>();
finder.tofind = _sType;
CreateObject<TypeList>::find(finder);
if (finder.res == NULL) {
finder.res = findPlugin(_sType);
}
return finder.res;
}
//----------------------------------------------------------------------------------------
// Create with XML
template <typename T, typename TypeList>
T* CAstraObjectFactory<T, TypeList>::create(const Config& _cfg)
{
T* object = create(_cfg.self.getAttribute("type"));
if (object == NULL) return NULL;
if (object->initialize(_cfg))
return object;
delete object;
return NULL;
}
//----------------------------------------------------------------------------------------
//----------------------------------------------------------------------------------------
// Create the necessary Object Managers
/**
* Class used to create algorithms from a string or a config object
*/
class _AstraExport CAlgorithmFactory : public CAstraObjectFactory<CAlgorithm, AlgorithmTypeList> {};
/**
* Class used to create 2D projectors from a string or a config object
*/
class _AstraExport CProjector2DFactory : public CAstraObjectFactory<CProjector2D, Projector2DTypeList> {};
/**
* Class used to create 3D projectors from a string or a config object
*/
class _AstraExport CProjector3DFactory : public CAstraObjectFactory<CProjector3D, Projector3DTypeList> {};
} // end namespace
#endif
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