AtomVisitor.hpp

/* ***** BEGIN LICENSE BLOCK *****
 * FW4SPL - Copyright (C) IRCAD, 2009-2015.
 * Distributed under the terms of the GNU Lesser General Public License (LGPL) as
 * published by the Free Software Foundation.
 * ****** END LICENSE BLOCK ****** */

#ifndef  __FWATOMCONVERSION_ATOMVISITOR_HPP__
#define  __FWATOMCONVERSION_ATOMVISITOR_HPP__

#include <map>

#include <fwTools/UUID.hpp>

#include <fwAtoms/Object.hpp>

#include "fwAtomConversion/config.hpp"

namespace fwData
{
class Object;
}

namespace fwAtomConversion
{

class FWATOMCONVERSION_CLASS_API AtomVisitor
{

public:

    struct IReadPolicy
    {
        virtual SPTR(::fwData::Object) operator() (const std::string &uuid, const std::string &classname) const = 0;
    };

    struct ReusePolicy : IReadPolicy
    { FWATOMCONVERSION_API virtual SPTR(::fwData::Object) operator() (const std::string &uuid,
                                                                      const std::string &classname) const; };

    struct ChangePolicy : IReadPolicy
    { FWATOMCONVERSION_API virtual SPTR(::fwData::Object) operator() (const std::string &uuid,
                                                                      const std::string &classname) const; };

    struct StrictPolicy : IReadPolicy
    { FWATOMCONVERSION_API virtual SPTR(::fwData::Object) operator() (const std::string &uuid,
                                                                      const std::string &classname) const; };
    typedef std::map< ::fwTools::UUID::UUIDType, SPTR(::fwData::Object) > DataCacheType;

    FWATOMCONVERSION_API AtomVisitor( const ::fwAtoms::Object::sptr &atomObj, DataCacheType & cache,
                                      const IReadPolicy &uuidPolicy );

    FWATOMCONVERSION_API virtual ~AtomVisitor();

    FWATOMCONVERSION_API void visit();

    FWATOMCONVERSION_API SPTR(::fwData::Object) getDataObject() const;

private:

    void processMetaInfos( const ::fwAtoms::Object::MetaInfosType & metaInfos );

    void processAttributes( const ::fwAtoms::Object::AttributesType & attributes );

    ::fwAtoms::Object::sptr m_atomObj;

    SPTR(::fwData::Object) m_dataObj;

    DataCacheType & m_cache;

    const IReadPolicy &m_uuidPolicy;
};

} // end namespace fwAtomConversion

#endif // __FWATOMCONVERSION_ATOMVISITOR_HPP__