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/*******************************************************************************
* Copyright (c) 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.common.utility.internal;
import org.eclipse.jpt.common.utility.Command;
/**
* Straightforward implementation of {@link StatefulCommandExecutor}.
*/
public class SimpleCommandExecutor
implements StatefulCommandExecutor
{
private boolean active = false;
public SimpleCommandExecutor() {
super();
}
public void start() {
if (this.active) {
throw new IllegalStateException("Not stopped."); //$NON-NLS-1$
}
this.active = true;
}
public void execute(Command command) {
if (this.active) {
command.execute();
}
}
public void stop() {
if ( ! this.active) {
throw new IllegalStateException("Not started."); //$NON-NLS-1$
}
this.active = false;
}
}
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