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/***************************************************************************
* Copyright (c) 2004 - 2008 Eike Stepper, Germany.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Martin Taal - initial API and implementation
**************************************************************************/
package org.eclipse.emf.cdo.server.hibernate.teneo;
import org.eclipse.emf.cdo.server.hibernate.IHibernateMappingProvider;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EPackage;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl;
import org.eclipse.emf.ecore.xmi.impl.EcoreResourceFactoryImpl;
import org.eclipse.emf.teneo.extension.ExtensionManager;
import org.eclipse.emf.teneo.extension.ExtensionManagerFactory;
import org.eclipse.emf.teneo.extension.ExtensionUtil;
import org.eclipse.emf.teneo.hibernate.mapper.MappingContext;
import org.eclipse.emf.teneo.hibernate.mapper.MappingUtil;
import java.io.ByteArrayInputStream;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Properties;
/**
* Handles different cases of input modes: the modelObjects can be a collection of String (containing an ecore model) or
* EPackage objects.
*
* @author Martin Taal
*/
public class TeneoHibernateMappingProvider implements IHibernateMappingProvider
{
// the passed modelObjects collection is defined as a collection of Objects
// to prevent binary dependency on emf.
public String provideMapping(Collection<Object> modelObjects, Properties properties)
{
// TODO: handle nested package structures
final List<EPackage> epacks = new ArrayList<EPackage>();
final ResourceSet rs = new ResourceSetImpl();
rs.getResourceFactoryRegistry().getExtensionToFactoryMap().put("ecore", new EcoreResourceFactoryImpl());
for (Object o : modelObjects)
{
if (o instanceof EPackage)
{
epacks.addAll(resolveSubPackages((EPackage)o));
}
else
{ // assume a String read from it
final String ecoreStr = (String)o;
// this assumes that the (default) encoding is the same on both the client and
// server
final ByteArrayInputStream bis = new ByteArrayInputStream(ecoreStr.getBytes());
// fool the resourceset by passing a fake uri
final URI epackageURI = URI.createURI("epackage.ecore");
final Resource resource = rs.createResource(epackageURI);
try
{
resource.load(bis, Collections.EMPTY_MAP);
// now the toplevel content should be EPackage
for (Object contentObject : resource.getContents())
{
epacks.addAll(resolveSubPackages((EPackage)contentObject));
}
}
catch (Exception e)
{
throw new CDOTeneoException("Exception when loading: " + ecoreStr, e);
}
}
}
// translate the list of EPackages to an array
final EPackage[] ePackageArray = epacks.toArray(new EPackage[epacks.size()]);
// register the custom cdo extensions
final ExtensionManager extensionManager = ExtensionManagerFactory.getInstance().create();
registerCDOExtensions(extensionManager);
// and go for it!
return MappingUtil.generateMapping(ePackageArray, properties, extensionManager);
}
public void registerCDOExtensions(ExtensionManager extensionManager)
{
MappingUtil.registerHbExtensions(extensionManager);
extensionManager.registerExtension(ExtensionUtil.createExtension(MappingContext.class, CDOMappingContext.class,
false));
}
protected List<EPackage> resolveSubPackages(EPackage epack)
{
final List<EPackage> epacks = new ArrayList<EPackage>();
epacks.add(epack);
for (EPackage subEPackage : epack.getESubpackages())
{
epacks.addAll(resolveSubPackages(subEPackage));
}
return epacks;
}
}
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