1 files changed, 0 insertions, 179 deletions
diff --git a/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/model/value/AspectPropertyValueModelAdapter.java b/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/model/value/AspectPropertyValueModelAdapter.java
deleted file mode 100644
index 75853757ad..0000000000
--- a/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/model/value/AspectPropertyValueModelAdapter.java
+++ /dev/null
@@ -1,179 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2008 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.utility.internal.model.value;
-
-import org.eclipse.jpt.utility.internal.model.AbstractModel;
-import org.eclipse.jpt.utility.internal.model.ChangeSupport;
-import org.eclipse.jpt.utility.internal.model.SingleAspectChangeSupport;
-import org.eclipse.jpt.utility.model.listener.PropertyChangeListener;
-import org.eclipse.jpt.utility.model.value.PropertyValueModel;
-
-/**
- * This abstract class provides the infrastructure needed to wrap
- * a value model, "lazily" listen to it, and convert
- * its change notifications into property value model change
- * notifications.
- * 
- * Subclasses must override:
- * - #buildValue()
- *     to return the current property value, as derived from the
- *     current model value
- * 
- */
-public abstract class AspectPropertyValueModelAdapter<T>
-	extends AbstractModel
-	implements PropertyValueModel<T>
-{
-	/**
-	 * Cache the current value so we can pass an "old value" when
-	 * we fire a property change event.
-	 * We need this because the value may be calculated and we may
-	 * not able to derive the "old value" from the collection
-	 * change event fired by the collection value model.
-	 */
-	protected T value;
-
-
-	// ********** constructor/initialization **********
-
-	protected AspectPropertyValueModelAdapter() {
-		super();
-		// our value is null when we are not listening to the collection holder
-		this.value = null;
-	}
-
-	@Override
-	protected ChangeSupport buildChangeSupport() {
-		return new SingleAspectChangeSupport(this, PropertyChangeListener.class, VALUE);
-	}
-
-
-	// ********** PropertyValueModel implementation **********
-
-	/**
-	 * Return the cached value.
-	 */
-	public T getValue() {
-		return this.value;
-	}
-
-
-	// ********** extend change support **********
-
-	/**
-	 * Extend to start listening to the wrapped collection if necessary.
-	 */
-	@Override
-	public synchronized void addPropertyChangeListener(PropertyChangeListener listener) {
-		if (this.hasNoListeners()) {
-			this.engageModel();
-		}
-		super.addPropertyChangeListener(listener);
-	}
-	
-	/**
-	 * Extend to start listening to the wrapped collection if necessary.
-	 */
-	@Override
-	public synchronized void addPropertyChangeListener(String propertyName, PropertyChangeListener listener) {
-		if (propertyName == VALUE && this.hasNoListeners()) {
-			this.engageModel();
-		}
-		super.addPropertyChangeListener(propertyName, listener);
-	}
-	
-	/**
-	 * Extend to stop listening to the wrapped collection if necessary.
-	 */
-	@Override
-	public synchronized void removePropertyChangeListener(PropertyChangeListener listener) {
-		super.removePropertyChangeListener(listener);
-		if (this.hasNoListeners()) {
-			this.disengageModel();
-		}
-	}
-	
-	/**
-	 * Extend to stop listening to the wrapped collection if necessary.
-	 */
-	@Override
-	public synchronized void removePropertyChangeListener(String propertyName, PropertyChangeListener listener) {
-		super.removePropertyChangeListener(propertyName, listener);
-		if (propertyName == VALUE && this.hasNoListeners()) {
-			this.disengageModel();
-		}
-	}
-
-
-	// ********** queries **********
-
-	/**
-	 * Return whether there are any listeners for the aspect.
-	 */
-	protected boolean hasListeners() {
-		return this.hasAnyPropertyChangeListeners(VALUE);
-	}
-
-	/**
-	 * Return whether there are any listeners for the aspect.
-	 */
-	protected boolean hasNoListeners() {
-		return ! this.hasListeners();
-	}
-
-
-	// ********** behavior **********
-
-	/**
-	 * Start listening to the model and build the value.
-	 */
-	protected void engageModel() {
-		this.engageModel_();
-		// synch our value *after* we start listening to the collection,
-		// since the collection's value might change when a listener is added
-		this.value = this.buildValue();
-	}
-
-	/**
-	 * Start listening to the model.
-	 */
-	protected abstract void engageModel_();
-
-	/**
-	 * Build and return the current value, as derived from the
-	 * current state of the wrapped model.
-	 */
-	protected abstract T buildValue();
-
-	/**
-	 * Stop listening to the model and clear the value.
-	 */
-	protected void disengageModel() {
-		this.disengageModel_();
-		// clear out our value when we are not listening to the collection
-		this.value = null;
-	}
-
-	/**
-	 * Stop listening to the model.
-	 */
-	protected abstract void disengageModel_();
-
-	/**
-	 * The wrapped model changed in some fashion.
-	 * Recalculate the value and notify any listeners.
-	 */
-	protected void propertyChanged() {
-		Object old = this.value;
-		this.value = this.buildValue();
-		this.firePropertyChanged(VALUE, old, this.value);
-	}
-
-}