diff options
Diffstat (limited to 'common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/SimpleObjectReference.java')
-rw-r--r-- | common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/SimpleObjectReference.java | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/SimpleObjectReference.java b/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/SimpleObjectReference.java deleted file mode 100644 index 5134aa98a3..0000000000 --- a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/SimpleObjectReference.java +++ /dev/null @@ -1,98 +0,0 @@ -/******************************************************************************* - * 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.common.utility.internal; - -import java.io.Serializable; -import org.eclipse.jpt.common.utility.ObjectReference; - -/** - * Provide a container for passing an object that can be changed by the recipient. - * - * @see SynchronizedObject - */ -public class SimpleObjectReference<V> - implements ObjectReference<V>, Cloneable, Serializable -{ - /** Backing value. */ - private volatile V value; - - private static final long serialVersionUID = 1L; - - - // ********** constructors ********** - - /** - * Create an object reference with the specified initial value. - */ - public SimpleObjectReference(V value) { - super(); - this.value = value; - } - - /** - * Create an object reference with an initial value of - * <code>null</code>. - */ - public SimpleObjectReference() { - this(null); - } - - - // ********** value ********** - - public V getValue() { - return this.value; - } - - public boolean valueEquals(Object object) { - return Tools.valuesAreEqual(this.value, object); - } - - public boolean valueNotEqual(Object object) { - return Tools.valuesAreDifferent(this.value, object); - } - - public boolean isNull() { - return this.value == null; - } - - public boolean isNotNull() { - return this.value != null; - } - - public V setValue(V value) { - V old = this.value; - this.value = value; - return old; - } - - public V setNull() { - return this.setValue(null); - } - - - // ********** standard methods ********** - - @Override - public SimpleObjectReference<V> clone() { - try { - @SuppressWarnings("unchecked") - SimpleObjectReference<V> clone = (SimpleObjectReference<V>) super.clone(); - return clone; - } catch (CloneNotSupportedException ex) { - throw new InternalError(); - } - } - - @Override - public String toString() { - return '[' + String.valueOf(this.value) + ']'; - } -} |