/***********************************************************************************************************************
* Copyright (C) 2010-2013 by the Stratosphere project (http://stratosphere.eu)
*
* 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 eu.stratosphere.pact.runtime.task.util;
import java.io.IOException;
import eu.stratosphere.util.MutableObjectIterator;
/**
* A simple iterator provider that returns a supplied iterator and does nothing when closed.
*
*/
public class SimpleCloseableInputProvider<E> implements CloseableInputProvider<E>
{
/**
* The iterator returned by this class.
*/
private final MutableObjectIterator<E> iterator;
/**
* Creates a new simple input provider that will return the given iterator.
*
* @param iterator The iterator that will be returned.
*/
public SimpleCloseableInputProvider(MutableObjectIterator<E> iterator) {
this.iterator = iterator;
}
@Override
public void close() throws IOException {
// do nothing
}
@Override
public MutableObjectIterator<E> getIterator() {
return this.iterator;
}
}