1 files changed, 55 insertions, 0 deletions
diff --git a/jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/content/persistence/PersistenceInit.java b/jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/content/persistence/PersistenceInit.java
new file mode 100644
index 0000000000..694607c557
--- /dev/null
+++ b/jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/content/persistence/PersistenceInit.java
@@ -0,0 +1,55 @@
+/*******************************************************************************
+ * Copyright (c) 2006 Oracle. 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: Oracle. - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.jpt.core.internal.content.persistence;
+
+import org.eclipse.emf.ecore.EFactory;
+import org.eclipse.emf.ecore.EPackage;
+import org.eclipse.jpt.core.internal.content.persistence.resource.PersistenceXmlResourceFactory;
+import org.eclipse.wst.common.componentcore.internal.impl.WTPEntityResolver;
+import org.eclipse.wst.common.internal.emf.utilities.DOMUtilities;
+import org.eclipse.wst.common.internal.emf.utilities.ExtendedEcoreUtil;
+
+public class PersistenceInit
+{
+	private static boolean initialized = false;
+	
+	public static void init() {
+		init(true);
+	}
+	
+	public static void init(boolean shouldPreregisterPackages) {
+		if (! initialized) {
+			initialized = true;
+			DOMUtilities.setDefaultEntityResolver(WTPEntityResolver.INSTANCE);
+			initResourceFactories();
+		}
+		if (shouldPreregisterPackages) {
+			preregisterPackages();
+		}
+	}
+	
+	private static void initResourceFactories() {
+		PersistenceXmlResourceFactory.register();
+	}
+	
+	private static void preregisterPackages() {
+		ExtendedEcoreUtil.preRegisterPackage(
+			"packaging.xmi", //$NON-NLS-1$
+			new EPackage.Descriptor() { 
+				public EPackage getEPackage() {
+					return PersistencePackage.eINSTANCE;
+				}
+				
+				public EFactory getEFactory() {
+					return PersistenceFactory.eINSTANCE;
+				}
+			}
+		);
+	}
+}