/* CallableAdapter.java
*
* Copyright 2009-2012 Comcast Interactive Media, LLC.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.fishwife.jrugged;
import java.util.concurrent.Callable;
/**
* Adapter to expose a Runnable as a Callable, with an optional result.
*
* @param <R>
*/
public class CallableAdapter<R> implements Callable<R> {
private Runnable runnable;
private R result;
public CallableAdapter(final Runnable runnable) {
this(runnable, null);
}
public CallableAdapter(final Runnable runnable, final R result) {
this.runnable = runnable;
this.result = result;
}
@Override
public R call() throws Exception {
runnable.run();
return result;
}
}