ProcessingDefinitionAdapter.cxx

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/*
 * Copyright (c) 2001-2004 MUSIC TECHNOLOGY GROUP (MTG)
 *                         UNIVERSITAT POMPEU FABRA
 *
 *
 * This program 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 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */


#include "ProcessingDefinitionAdapter.hxx"
#include "Assert.hxx"
#include "Processing.hxx"
#include "ProcessingConfig.hxx"
#include "ProcessingFactory.hxx"
#include "XMLAdapter.hxx"
#include "XmlStorageErr.hxx"

namespace CLAM
{
        ProcessingDefinitionAdapter::ProcessingDefinitionAdapter( Processing * adaptee, const std::string & name, const std::string & position, const std::string & size )
                : mAdaptee(adaptee)
                , mConfiguration(0)
                , mName(name)
                , mPosition(position)
                , mSize(size)
        {
        }

        ProcessingDefinitionAdapter::~ProcessingDefinitionAdapter()
        {
                if (mConfiguration) delete mConfiguration;
        }

        void ProcessingDefinitionAdapter::StoreOn (Storage & store) const
        {
                Text nameCopy(mName);
                XMLAdapter<Text> nameAdapter( nameCopy, "id");
                Text className(mAdaptee->GetClassName());
                XMLAdapter<Text> classNameAdapter( className, "type");
                store.Store(nameAdapter);
                store.Store(classNameAdapter);
                if (mPosition!="") // check if position is defined (QPoint values are integers)
                {
                        Text positionCopy(mPosition);
                        XMLAdapter<Text> positionAdapter (positionCopy, "position");
                        store.Store(positionAdapter);
                }
                if (mSize!="") // check if size is defined
                {
                        Text sizeCopy(mSize);
                        XMLAdapter<Text> sizeAdapter (sizeCopy, "size");
                        store.Store(sizeAdapter);
                }
                XMLComponentAdapter configAdapter((ProcessingConfig&)mAdaptee->GetConfig());
                store.Store(configAdapter);
        }

        void ProcessingDefinitionAdapter::LoadFrom (Storage & store) 
        {
                XMLAdapter<Text> nameAdapter( mName, "id");
                if (!store.Load(nameAdapter))
                        throw XmlStorageErr("Processing without id attribute");
                Text className;
                XMLAdapter<Text> classNameAdapter( className, "type");
                if (!store.Load(classNameAdapter))
                        throw XmlStorageErr("Processing without type attribute");

                XMLAdapter<Text> positionAdapter (mPosition, "position");
                store.Load(positionAdapter);
                XMLAdapter<Text> sizeAdapter (mSize, "size");
                store.Load(sizeAdapter);

                try
                {
                        mAdaptee = ProcessingFactory::GetInstance().CreateSafe(className);
                } catch (ErrFactory & e)
                {
                        std::string msg = 
                                "Error creating a processing object of type '" +
                                className + "' which is not available.";
                        throw XmlStorageErr(msg);
                }
                Component * cfg = mAdaptee->GetConfig().DeepCopy();
                XMLComponentAdapter configAdapter( *cfg );
                store.Load(configAdapter);
                mConfiguration = dynamic_cast<ProcessingConfig *>(cfg);
                CLAM_ASSERT(mConfiguration, "Retrieved config fails to cast as a ProcessingConfig");
        }
} // namespace CLAM