diff options
Diffstat (limited to 'jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/BidiTransformer.java')
-rw-r--r-- | jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/BidiTransformer.java | 93 |
1 files changed, 0 insertions, 93 deletions
diff --git a/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/BidiTransformer.java b/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/BidiTransformer.java deleted file mode 100644 index 83eca988c1..0000000000 --- a/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/BidiTransformer.java +++ /dev/null @@ -1,93 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2007, 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.utility.internal; - -import java.io.Serializable; - -/** - * Used by various "pluggable" classes to transform objects - * in both directions. - * - * If anyone can come up with a better class name - * and/or method name, I would love to hear it. ~bjv - */ -public interface BidiTransformer<T1, T2> extends Transformer<T1, T2> { - - /** - * Return the "reverse-transformed" object. - * The semantics of "reverse-transform" is determined by the - * contract between the client and the server. - */ - T1 reverseTransform(T2 o); - - - final class Null<S1, S2> implements BidiTransformer<S1, S2>, Serializable { - @SuppressWarnings("rawtypes") - public static final BidiTransformer INSTANCE = new Null(); - @SuppressWarnings("unchecked") - public static <R1, R2> BidiTransformer<R1, R2> instance() { - return INSTANCE; - } - // ensure single instance - private Null() { - super(); - } - // simply return the object, unchanged - @SuppressWarnings("unchecked") - public S2 transform(S1 o) { - return (S2) o; - } - // simply return the object, unchanged - @SuppressWarnings("unchecked") - public S1 reverseTransform(S2 o) { - return (S1) o; - } - @Override - public String toString() { - return "BidiTransformer.Null"; //$NON-NLS-1$ - } - private static final long serialVersionUID = 1L; - private Object readResolve() { - // replace this object with the singleton - return INSTANCE; - } - } - - final class Disabled<S1, S2> implements BidiTransformer<S1, S2>, Serializable { - @SuppressWarnings("rawtypes") - public static final BidiTransformer INSTANCE = new Disabled(); - @SuppressWarnings("unchecked") - public static <R1, R2> BidiTransformer<R1, R2> instance() { - return INSTANCE; - } - // ensure single instance - private Disabled() { - super(); - } - // throw an exception - public S2 transform(S1 o) { - throw new UnsupportedOperationException(); - } - // throw an exception - public S1 reverseTransform(S2 o) { - throw new UnsupportedOperationException(); - } - @Override - public String toString() { - return "BidiTransformer.Disabled"; //$NON-NLS-1$ - } - private static final long serialVersionUID = 1L; - private Object readResolve() { - // replace this object with the singleton - return INSTANCE; - } - } - -} |