diff options
Diffstat (limited to 'common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/node/PluggableValidator.java')
-rw-r--r-- | common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/node/PluggableValidator.java | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/node/PluggableValidator.java b/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/node/PluggableValidator.java deleted file mode 100644 index fdf27d26eb..0000000000 --- a/common/plugins/org.eclipse.jpt.common.utility/src/org/eclipse/jpt/common/utility/internal/node/PluggableValidator.java +++ /dev/null @@ -1,127 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2007, 2012 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.node; - -import java.io.Serializable; -import org.eclipse.jpt.common.utility.internal.StringTools; -import org.eclipse.jpt.common.utility.internal.SynchronizedBoolean; - -/** - * This implementation of the Validator interface implements the - * pause/resume portion of the protocol, but delegates the actual - * validation to a "pluggable" delegate. - */ -public class PluggableValidator - implements Node.Validator -{ - private boolean pause; - private boolean validateOnResume; - private final Delegate delegate; - - - /** - * Convenience factory method. - */ - public static Node.Validator buildAsynchronousValidator(SynchronizedBoolean validateFlag) { - return new PluggableValidator(new AsynchronousValidator(validateFlag)); - } - - /** - * Convenience factory method. - */ - public static Node.Validator buildSynchronousValidator(Node node) { - return new PluggableValidator(new SynchronousValidator(node)); - } - - /** - * Construct a validator with the specified delegate. - */ - public PluggableValidator(Delegate delegate) { - super(); - this.pause = false; - this.validateOnResume = false; - this.delegate = delegate; - } - - public synchronized void validate() { - if (this.pause) { - this.validateOnResume = true; - } else { - this.delegate.validate(); - } - } - - public synchronized void pause() { - if (this.pause) { - throw new IllegalStateException("already paused"); //$NON-NLS-1$ - } - this.pause = true; - } - - public synchronized void resume() { - if ( ! this.pause) { - throw new IllegalStateException("not paused"); //$NON-NLS-1$ - } - this.pause = false; - // validate any changes that occurred while the validation was paused - if (this.validateOnResume) { - this.validateOnResume = false; - this.delegate.validate(); - } - } - - @Override - public String toString() { - return StringTools.buildToStringFor(this, this.delegate); - } - - - // ********** member interface ********** - - /** - * Interface implemented by any delegates of a pluggable validator. - */ - public interface Delegate { - - /** - * The validator is not "paused" - perform the appropriate validation. - */ - void validate(); - - - /** - * This delegate does nothing. - */ - final class Null - implements Delegate, Serializable - { - public static final Delegate INSTANCE = new Null(); - public static Delegate instance() { - return INSTANCE; - } - // ensure single instance - private Null() { - super(); - } - public void validate() { - // do nothing - } - @Override - public String toString() { - return StringTools.buildSingletonToString(this); - } - private static final long serialVersionUID = 1L; - private Object readResolve() { - // replace this object with the singleton - return INSTANCE; - } - } - } -} |