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/**
* <copyright>
*
* Copyright (c) 2005, 2006, 2007, 2008 Springsite BV (The Netherlands) 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
*
* </copyright>
*
* $Id: StoreController.java,v 1.14 2008/08/12 07:45:40 mtaal Exp $
*/
package org.eclipse.gmf.examples.mindmap.diagram.db;
import java.io.IOException;
import java.util.Properties;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EPackage;
import org.eclipse.emf.ecore.EcorePackage;
import org.eclipse.emf.ecore.xml.type.XMLTypePackage;
import org.eclipse.emf.teneo.PersistenceOptions;
import org.eclipse.emf.teneo.hibernate.HbHelper;
import org.eclipse.emf.teneo.hibernate.HbSessionDataStore;
import org.eclipse.emf.teneo.hibernate.mapping.property.EListPropertyHandler;
import org.eclipse.emf.teneo.hibernate.mapping.property.EReferencePropertyHandler;
import org.eclipse.gmf.examples.mindmap.MindmapPackage;
import org.eclipse.gmf.runtime.notation.NotationPackage;
import org.hibernate.Session;
/**
* This class manages one Hibernate Datastore, it offers static access to a
* singleton DataStore. It initializes the datastore using the GMF and Ecore
* epackages and the properties in the teneo.properties.
*
* @author mtaal@elver.org
*/
public class StoreController {
// This database uri ensures that the Hibernate XML Resource is used and
// that the
// Map and the Diagram are loaded in the top of the resource. The dsname
// parameter
// is the name of the datastore initialized below.
public static final URI DATABASE_URI = URI
.createURI("hbxml://?dsname=mindmap&query1=from Map&query2=from Diagram");
// provide easy access to the datastore
private static StoreController instance = new StoreController();
public static StoreController getInstance() {
return instance;
}
private HbSessionDataStore dataStore = null;
private boolean initialized = false;
public Session getSession() {
return getDataStore().getSessionFactory().openSession();
}
public HbSessionDataStore getDataStore() {
if (dataStore == null) {
dataStore = initializeDataStore();
}
return dataStore;
}
public void closeDataStore() {
getDataStore().close();
}
public HbSessionDataStore initializeDataStore() {
if (initialized) {
return dataStore;
}
// create and register the datastore using the mindmap name
final HbSessionDataStore localDataStore = new HbSessionDataStore();
localDataStore.setName("mindmap");
HbHelper.INSTANCE.register(localDataStore);
// now register the epackages. There are four epackages:
// 1) the model itself
// 2) the GMF model
// 3) the ecore model because GMF depends on it
// 4) and the ecore XML type package
final EPackage[] ePackages = new EPackage[] { MindmapPackage.eINSTANCE,
NotationPackage.eINSTANCE, EcorePackage.eINSTANCE,
XMLTypePackage.eINSTANCE };
localDataStore.setEPackages(ePackages);
// load the properties from the teneo.properties file
try {
final Properties props = new Properties();
props.load(this.getClass().getResourceAsStream("teneo.properties"));
// handle multiple inheritance in the GMF model
props.setProperty(PersistenceOptions.PERSISTENCE_XML,
"annotations.xml");
localDataStore.setProperties(props);
} catch (IOException e) {
throw new IllegalStateException(e);
}
// solve a specific issue with the GMF model
localDataStore.getExtensionManager().registerExtension(
EListPropertyHandler.class.getName(),
GMFEListPropertyHandler.class.getName());
localDataStore.initialize();
// print the hibernate mapping
System.err.println(localDataStore.getMappingXML());
initialized = true;
return localDataStore;
}
}
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