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/***************************************************************************
* Copyright (c) 2004 - 2008 Springsite B.V. and others
* 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.common.model.CDOPackage;
import org.eclipse.emf.cdo.server.hibernate.IHibernateMappingProvider;
import org.eclipse.emf.cdo.server.hibernate.IHibernateStore;
import org.eclipse.emf.cdo.server.internal.hibernate.HibernateUtil;
import org.eclipse.emf.cdo.server.internal.hibernate.bundle.OM;
import org.eclipse.net4j.util.WrappedException;
import org.eclipse.net4j.util.om.trace.ContextTracer;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EPackage;
import org.eclipse.emf.ecore.EcorePackage;
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.ecore.xml.type.XMLTypePackage;
import org.eclipse.emf.teneo.hibernate.cdo.CDOHelper;
import org.hibernate.cfg.Configuration;
import java.io.ByteArrayInputStream;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Properties;
/**
* Uses the ecore string in the cdoPackages of the store to generate a mapping.
*
* @author Martin Taal
*/
public class TeneoHibernateMappingProvider implements IHibernateMappingProvider
{
private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG, TeneoHibernateMappingProvider.class);
private IHibernateStore hibernateStore;
public void addMapping(Configuration configuration)
{
final String mapping = generateMapping();
TRACER.trace("Generated hibernate mapping:");
TRACER.trace(mapping);
System.err.println(mapping);
configuration.addXML(mapping);
TRACER.trace("Added mapping to configuration");
}
// the passed modelObjects collection is defined as a collection of Objects
// to prevent binary dependency on emf.
public String generateMapping()
{
TRACER.trace("Generating Hibernate Mapping");
final Properties properties = HibernateUtil.getInstance().getPropertiesFromStore(getHibernateStore());
// TODO: handle nested package structures
final List<EPackage> epacks = new ArrayList<EPackage>();
final ResourceSet rs = new ResourceSetImpl();
rs.getPackageRegistry().put(EcorePackage.eNS_URI, EcorePackage.eINSTANCE);
rs.getPackageRegistry().put(XMLTypePackage.eNS_URI, XMLTypePackage.eINSTANCE);
rs.getResourceFactoryRegistry().getExtensionToFactoryMap().put("*", new EcoreResourceFactoryImpl());
for (CDOPackage cdoPackage : getHibernateStore().getPackageHandler().getCDOPackages())
{
TRACER.trace("Using cdoPackage : " + cdoPackage.getName() + " - " + cdoPackage.getPackageURI());
final String ecoreStr = cdoPackage.getEcore();
if (ecoreStr == null)
{
// happens at initialization time
continue;
}
// 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(cdoPackage.getPackageURI());
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 WrappedException.wrap(e);
}
}
// translate the list of EPackages to an array
final EPackage[] ePackageArray = epacks.toArray(new EPackage[epacks.size()]);
properties.put("teneo.mapping.also_map_as_class", "false");
return CDOHelper.getInstance().generateMapping(ePackageArray, properties);
}
// this will check the global package registry and read the epackages from
// there if the epackage is already present there
protected List<EPackage> resolveSubPackages(EPackage epack)
{
final List<EPackage> epacks = new ArrayList<EPackage>();
if (EPackage.Registry.INSTANCE.get(epack.getNsURI()) != null)
{
epacks.add((EPackage)EPackage.Registry.INSTANCE.get(epack.getNsURI()));
}
else
{
epacks.add(epack);
}
for (EPackage subEPackage : epack.getESubpackages())
{
epacks.addAll(resolveSubPackages(subEPackage));
}
return epacks;
}
public IHibernateStore getHibernateStore()
{
return hibernateStore;
}
public void setHibernateStore(IHibernateStore hibernateStore)
{
this.hibernateStore = hibernateStore;
}
}
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