| /** |
| * 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; |
| |
| import static org.apache.crunch.types.avro.Avros.*; |
| import static org.junit.Assert.assertEquals; |
| |
| import org.apache.crunch.impl.mr.MRPipeline; |
| import org.apache.crunch.test.TemporaryPath; |
| import org.apache.crunch.test.TemporaryPaths; |
| import org.apache.crunch.types.PType; |
| import org.junit.Rule; |
| import org.junit.Test; |
| |
| import com.google.common.collect.Iterables; |
| |
| /** |
| * |
| */ |
| public class DeepCopyCustomTuplesIT { |
| @Rule |
| public TemporaryPath tmpDir = TemporaryPaths.create(); |
| |
| public static class PID extends Pair<Integer, String> { |
| public PID(Integer first, String second) { |
| super(first, second); |
| } |
| } |
| |
| private static PType<PID> pids = tuples(PID.class, ints(), strings()); |
| |
| @Test |
| public void testDeepCopyCustomTuple() throws Exception { |
| Pipeline p = new MRPipeline(DeepCopyCustomTuplesIT.class, tmpDir.getDefaultConfiguration()); |
| String shakesInputPath = tmpDir.copyResourceFileName("shakes.txt"); |
| PCollection<String> shakes = p.readTextFile(shakesInputPath); |
| Iterable<String> out = shakes |
| .parallelDo(new PreProcFn(), tableOf(ints(), pairs(ints(), pids))) |
| .groupByKey() |
| .parallelDo(new PostProcFn(), strings()) |
| .materialize(); |
| assertEquals(59, Iterables.size(out)); |
| p.done(); |
| } |
| |
| private static class PreProcFn extends MapFn<String, Pair<Integer, Pair<Integer, PID>>> { |
| private int counter = 0; |
| @Override |
| public Pair<Integer, Pair<Integer, PID>> map(String input) { |
| return Pair.of(counter++, Pair.of(counter++, new PID(input.length(), input))); |
| } |
| }; |
| |
| private static class PostProcFn extends DoFn<Pair<Integer, Iterable<Pair<Integer, PID>>>, String> { |
| @Override |
| public void process(Pair<Integer, Iterable<Pair<Integer, PID>>> input, Emitter<String> emitter) { |
| for (Pair<Integer, PID> p : input.second()) { |
| if (p.second().first() > 0 && p.second().first() < 10) { |
| emitter.emit(p.second().second()); |
| } |
| } |
| } |
| } |
| } |