| /******************************************************************************* |
| * Copyright (c) 2012, 2013 Oracle. All rights reserved. |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License 2.0, which accompanies this distribution |
| * and is available at https://www.eclipse.org/legal/epl-2.0/. |
| * |
| * Contributors: |
| * Oracle - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.jpt.common.utility.internal.command; |
| |
| import java.io.Serializable; |
| import org.eclipse.jpt.common.utility.command.InterruptibleCommand; |
| import org.eclipse.jpt.common.utility.command.InterruptibleCommandContext; |
| import org.eclipse.jpt.common.utility.internal.ObjectTools; |
| |
| /** |
| * Singleton implementation of the interruptible command context interface |
| * that simply executes the command without any sort of enhancement. |
| */ |
| public final class DefaultInterruptibleCommandContext |
| implements InterruptibleCommandContext, Serializable |
| { |
| public static final InterruptibleCommandContext INSTANCE = new DefaultInterruptibleCommandContext(); |
| |
| public static InterruptibleCommandContext instance() { |
| return INSTANCE; |
| } |
| |
| // ensure single instance |
| private DefaultInterruptibleCommandContext() { |
| super(); |
| } |
| |
| public void execute(InterruptibleCommand command) throws InterruptedException { |
| command.execute(); |
| } |
| |
| @Override |
| public String toString() { |
| return ObjectTools.singletonToString(this); |
| } |
| |
| private static final long serialVersionUID = 1L; |
| private Object readResolve() { |
| // replace this object with the singleton |
| return INSTANCE; |
| } |
| } |