diff options
Diffstat (limited to 'jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/utility/JobCommand.java')
-rw-r--r-- | jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/utility/JobCommand.java | 96 |
1 files changed, 0 insertions, 96 deletions
diff --git a/jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/utility/JobCommand.java b/jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/utility/JobCommand.java deleted file mode 100644 index f4b1a0d7d0..0000000000 --- a/jpa/plugins/org.eclipse.jpt.core/src/org/eclipse/jpt/core/internal/utility/JobCommand.java +++ /dev/null @@ -1,96 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2008, 2009 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.utility; - -import java.io.Serializable; - -import org.eclipse.core.runtime.IProgressMonitor; -import org.eclipse.core.runtime.IStatus; -import org.eclipse.core.runtime.Status; - -/** - * Simple interface for implementing the GOF Command design pattern in an - * Eclipse job. - * <p> - * Provisional API: This interface is part of an interim API that is still - * under development and expected to change significantly before reaching - * stability. It is available at this early stage to solicit feedback from - * pioneering adopters on the understanding that any code that uses this API - * will almost certainly be broken (repeatedly) as the API evolves. - */ -public interface JobCommand { - - /** - * Execute the command. The semantics of the command - * is determined by the contract between the client and server. - * The command should check, as appropriate, whether the specified progress - * monitor is {@link IProgressMonitor#isCanceled() "canceled"}; if it is, - * the command should throw an - * {@link org.eclipse.core.runtime.OperationCanceledException OperationCanceledException}. - * @see IProgressMonitor#isCanceled() - */ - IStatus execute(IProgressMonitor monitor); - - /** - * Singleton implementation of the job command interface that will do - * nothing when executed. - */ - final class Null implements JobCommand, Serializable { - public static final JobCommand INSTANCE = new Null(); - public static JobCommand instance() { - return INSTANCE; - } - // ensure single instance - private Null() { - super(); - } - public IStatus execute(IProgressMonitor arg0) { - return Status.OK_STATUS; - } - @Override - public String toString() { - return "JobCommand.Null"; //$NON-NLS-1$ - } - private static final long serialVersionUID = 1L; - private Object readResolve() { - // replace this object with the singleton - return INSTANCE; - } - } - - /** - * Singleton implementation of the job command interface that will throw an - * exception when executed. - */ - final class Disabled implements JobCommand, Serializable { - public static final JobCommand INSTANCE = new Disabled(); - public static JobCommand instance() { - return INSTANCE; - } - // ensure single instance - private Disabled() { - super(); - } - // throw an exception - public IStatus execute(IProgressMonitor arg0) { - throw new UnsupportedOperationException(); - } - @Override - public String toString() { - return "JobCommand.Disabled"; //$NON-NLS-1$ - } - private static final long serialVersionUID = 1L; - private Object readResolve() { - // replace this object with the singleton - return INSTANCE; - } - } - -} |