/***********************************************************************************************************************
*
* 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.compiler.testfunctions;
import java.util.Iterator;
import eu.stratosphere.api.java.functions.GroupReduceFunction;
import eu.stratosphere.api.java.functions.GroupReduceFunction.Combinable;
import eu.stratosphere.util.Collector;
@Combinable
public class IdentityGroupReducer<T> extends GroupReduceFunction<T, T> {
private static final long serialVersionUID = 1L;
@Override
public void reduce(Iterator<T> values, Collector<T> out) {
while (values.hasNext()) {
out.collect(values.next());
}
}
}