ProcessingDefinitionAdapter.cxx

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00001 /*
00002  * Copyright (c) 2001-2004 MUSIC TECHNOLOGY GROUP (MTG)
00003  *                         UNIVERSITAT POMPEU FABRA
00004  *
00005  *
00006  * This program is free software; you can redistribute it and/or modify
00007  * it under the terms of the GNU General Public License as published by
00008  * the Free Software Foundation; either version 2 of the License, or
00009  * (at your option) any later version.
00010  *
00011  * This program is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  * GNU General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU General Public License
00017  * along with this program; if not, write to the Free Software
00018  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00019  *
00020  */
00021 
00022 
00023 #include "ProcessingDefinitionAdapter.hxx"
00024 #include "Assert.hxx"
00025 #include "Processing.hxx"
00026 #include "ProcessingConfig.hxx"
00027 #include "ProcessingFactory.hxx"
00028 #include "XMLAdapter.hxx"
00029 #include "XmlStorageErr.hxx"
00030 
00031 namespace CLAM
00032 {
00033         ProcessingDefinitionAdapter::ProcessingDefinitionAdapter( Processing * adaptee, const std::string & name, const std::string & position, const std::string & size )
00034                 : mAdaptee(adaptee)
00035                 , mConfiguration(0)
00036                 , mName(name)
00037                 , mPosition(position)
00038                 , mSize(size)
00039         {
00040         }
00041 
00042         ProcessingDefinitionAdapter::~ProcessingDefinitionAdapter()
00043         {
00044                 if (mConfiguration) delete mConfiguration;
00045         }
00046 
00047         void ProcessingDefinitionAdapter::StoreOn (Storage & store) const
00048         {
00049                 Text nameCopy(mName);
00050                 XMLAdapter<Text> nameAdapter( nameCopy, "id");
00051                 Text className(mAdaptee->GetClassName());
00052                 XMLAdapter<Text> classNameAdapter( className, "type");
00053                 store.Store(nameAdapter);
00054                 store.Store(classNameAdapter);
00055                 if (mPosition!="") // check if position is defined (QPoint values are integers)
00056                 {
00057                         Text positionCopy(mPosition);
00058                         XMLAdapter<Text> positionAdapter (positionCopy, "position");
00059                         store.Store(positionAdapter);
00060                 }
00061                 if (mSize!="") // check if size is defined
00062                 {
00063                         Text sizeCopy(mSize);
00064                         XMLAdapter<Text> sizeAdapter (sizeCopy, "size");
00065                         store.Store(sizeAdapter);
00066                 }
00067                 XMLComponentAdapter configAdapter((ProcessingConfig&)mAdaptee->GetConfig());
00068                 store.Store(configAdapter);
00069         }
00070 
00071         void ProcessingDefinitionAdapter::LoadFrom (Storage & store) 
00072         {
00073                 XMLAdapter<Text> nameAdapter( mName, "id");
00074                 if (!store.Load(nameAdapter))
00075                         throw XmlStorageErr("Processing without id attribute");
00076                 Text className;
00077                 XMLAdapter<Text> classNameAdapter( className, "type");
00078                 if (!store.Load(classNameAdapter))
00079                         throw XmlStorageErr("Processing without type attribute");
00080 
00081                 XMLAdapter<Text> positionAdapter (mPosition, "position");
00082                 store.Load(positionAdapter);
00083                 XMLAdapter<Text> sizeAdapter (mSize, "size");
00084                 store.Load(sizeAdapter);
00085 
00086                 try
00087                 {
00088                         mAdaptee = ProcessingFactory::GetInstance().CreateSafe(className);
00089                 } catch (ErrFactory & e)
00090                 {
00091                         std::string msg = 
00092                                 "Error creating a processing object of type '" +
00093                                 className + "' which is not available.";
00094                         throw XmlStorageErr(msg);
00095                 }
00096                 Component * cfg = mAdaptee->GetConfig().DeepCopy();
00097                 XMLComponentAdapter configAdapter( *cfg );
00098                 store.Load(configAdapter);
00099                 mConfiguration = dynamic_cast<ProcessingConfig *>(cfg);
00100                 CLAM_ASSERT(mConfiguration, "Retrieved config fails to cast as a ProcessingConfig");
00101         }
00102 } // namespace CLAM
00103 
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