GatheringCollector.java

/***********************************************************************************************************************
 *
 * 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.drivers;

import java.util.ArrayList;
import java.util.List;

import eu.stratosphere.api.common.typeutils.TypeSerializer;
import eu.stratosphere.util.Collector;

public class GatheringCollector<T> implements Collector<T> {

	private final List<T> list = new ArrayList<T>();
	
	private final TypeSerializer<T> serializer;

	public GatheringCollector(TypeSerializer<T> serializer) {
		this.serializer = serializer;
	}
	
	public List<T> getList() {
		return list;
	}

	@Override
	public void collect(T record) {
		T copy = this.serializer.createInstance();
		this.list.add(this.serializer.copy(record, copy));
	}

	@Override
	public void close() {}
}