| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.crunch.materialize.pobject; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Iterator; |
| |
| import org.apache.crunch.PCollection; |
| |
| /** |
| * A concrete implementation of {@link org.apache.crunch.materialize.pobject.PObjectImpl} whose |
| * value is a Java {@link java.util.Collection} containing the elements of the underlying {@link |
| * PCollection} for this {@link org.apache.crunch.PObject}. |
| * |
| * @param <S> The value type for elements contained in the {@code Collection} value encapsulated |
| * by this {@code PObject}. |
| */ |
| public class CollectionPObject<S> extends PObjectImpl<S, Collection<S>> { |
| |
| /** |
| * Constructs a new instance of this {@code PObject} implementation. |
| * |
| * @param collect The backing {@code PCollection} for this {@code PObject}. |
| */ |
| public CollectionPObject(PCollection<S> collect) { |
| super(collect); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public Collection<S> process(Iterable<S> input) { |
| Collection<S> target = new ArrayList<S>(); |
| Iterator<S> itr = input.iterator(); |
| while (itr.hasNext()) { |
| target.add(itr.next()); |
| } |
| return target; |
| } |
| } |