1 files changed, 126 insertions, 0 deletions
diff --git a/jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/context/orm/AbstractOrmRelationshipReference.java b/jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/context/orm/AbstractOrmRelationshipReference.java
new file mode 100644
index 0000000000..5f522255ae
--- /dev/null
+++ b/jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/context/orm/AbstractOrmRelationshipReference.java
@@ -0,0 +1,126 @@
+/*******************************************************************************
+ *  Copyright (c) 2009, 2010  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.context.orm;
+
+import org.eclipse.jpt.core.context.Entity;
+import org.eclipse.jpt.core.context.JoiningStrategy;
+import org.eclipse.jpt.core.context.TypeMapping;
+import org.eclipse.jpt.core.context.orm.OrmJoinColumnEnabledRelationshipReference;
+import org.eclipse.jpt.core.context.orm.OrmJoinTableEnabledRelationshipReference;
+import org.eclipse.jpt.core.context.orm.OrmJoiningStrategy;
+import org.eclipse.jpt.core.context.orm.OrmOwnableRelationshipReference;
+import org.eclipse.jpt.core.context.orm.OrmRelationshipMapping;
+import org.eclipse.jpt.core.context.orm.OrmRelationshipReference;
+import org.eclipse.jpt.core.resource.orm.AbstractXmlRelationshipMapping;
+import org.eclipse.jpt.core.utility.TextRange;
+
+public abstract class AbstractOrmRelationshipReference 
+	extends AbstractOrmXmlContextNode
+	implements OrmRelationshipReference
+{
+	protected AbstractXmlRelationshipMapping resourceMapping;
+	
+	// cache the strategy for property change notification
+	protected OrmJoiningStrategy cachedPredominantJoiningStrategy;
+	
+	
+	protected AbstractOrmRelationshipReference(
+			OrmRelationshipMapping parent, AbstractXmlRelationshipMapping resourceMapping) {
+		
+		super(parent);
+		this.resourceMapping = resourceMapping;
+		this.initialize();
+	}
+	
+	public void initializeFromOwnableRelationshipReference(
+			OrmOwnableRelationshipReference oldRelationshipReference) {
+		// no op
+	}
+	
+	public void initializeFromJoinColumnEnabledRelationshipReference(
+			OrmJoinColumnEnabledRelationshipReference oldRelationshipReference) {
+		// no op
+	}
+	
+	public void initializeFromJoinTableEnabledRelationshipReference(
+			OrmJoinTableEnabledRelationshipReference oldRelationshipReference) {
+		// no op
+	}
+	
+	public OrmRelationshipMapping getRelationshipMapping() {
+		return (OrmRelationshipMapping) getParent();
+	}
+	
+	public TypeMapping getTypeMapping() {
+		return getRelationshipMapping().getTypeMapping();
+	}
+	
+	public Entity getEntity() {
+		TypeMapping typeMapping = getTypeMapping();
+		return (typeMapping instanceof Entity) ? (Entity) typeMapping : null;
+	}
+	
+	public boolean isOverridableAssociation() {
+		return getPredominantJoiningStrategy().isOverridableAssociation();
+	}
+
+	public boolean isParentVirtual() {
+		return getRelationshipMapping().getPersistentAttribute().isVirtual();
+	}
+
+	public boolean isTargetForeignKeyRelationship() {
+		return false;
+	}
+	
+	
+	// **************** predominant joining strategy ***************************
+	
+	public OrmJoiningStrategy getPredominantJoiningStrategy() {
+		return this.cachedPredominantJoiningStrategy;
+	}
+	
+	protected void setPredominantJoiningStrategy() {
+		setPredominantJoiningStrategy(calculatePredominantJoiningStrategy());
+	}
+	
+	protected void setPredominantJoiningStrategy(OrmJoiningStrategy newJoiningStrategy) {
+		JoiningStrategy oldJoiningStrategy = this.cachedPredominantJoiningStrategy;
+		this.cachedPredominantJoiningStrategy = newJoiningStrategy;
+		firePropertyChanged(PREDOMINANT_JOINING_STRATEGY_PROPERTY, oldJoiningStrategy, newJoiningStrategy);
+	}
+	
+	
+	// **************** resource -> context ************************************
+	
+	protected void initialize() {
+		initializeJoiningStrategies();
+		this.cachedPredominantJoiningStrategy = calculatePredominantJoiningStrategy();
+	}
+	
+	protected abstract void initializeJoiningStrategies();
+	
+
+	public void update() {
+		updateJoiningStrategies();
+		setPredominantJoiningStrategy();
+	}
+	
+	protected abstract void updateJoiningStrategies();
+	
+	protected abstract OrmJoiningStrategy calculatePredominantJoiningStrategy();
+	
+	
+	// **************** validation *********************************************
+	
+	public TextRange getValidationTextRange() {
+		return getRelationshipMapping().getValidationTextRange();
+	}
+}