| /** |
| * 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 org.apache.crunch.impl.spark.SparkPipeline; |
| import org.apache.crunch.io.From; |
| import org.apache.crunch.io.seq.SeqFileTableSourceTarget; |
| import org.apache.crunch.test.TemporaryPath; |
| import org.apache.crunch.types.Converter; |
| import org.apache.crunch.types.PTableType; |
| import org.apache.crunch.types.writable.Writables; |
| import org.apache.hadoop.io.LongWritable; |
| import org.apache.hadoop.io.Text; |
| import org.junit.Rule; |
| import org.junit.Test; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| public class SkipPTypesIT { |
| @Rule |
| public TemporaryPath tempDir = new TemporaryPath(); |
| |
| PTableType<Text, LongWritable> ptt = Writables.tableOf(Writables.writables(Text.class), |
| Writables.writables(LongWritable.class)); |
| |
| @Test |
| public void testSkipPTypes() throws Exception { |
| String out = tempDir.getFileName("out"); |
| SparkPipeline pipeline = new SparkPipeline("local", "skipptypes"); |
| PCollection<String> shakes = pipeline.read(From.textFile(tempDir.copyResourceFileName("shakes.txt"))); |
| PTable<String, Long> wcnt = shakes.count(); |
| wcnt.write(new MySeqFileTableSourceTarget(out, ptt)); |
| pipeline.run(); |
| |
| PTable<Text, LongWritable> wcntIn = pipeline.read(new MySeqFileTableSourceTarget(out, ptt)); |
| assertEquals(new LongWritable(1L), wcntIn.materialize().iterator().next().second()); |
| pipeline.done(); |
| } |
| |
| static class ToWritables extends MapFn<Pair<String, Long>, Pair<Text, LongWritable>> { |
| @Override |
| public Pair<Text, LongWritable> map(Pair<String, Long> input) { |
| return Pair.of(new Text(input.first()), new LongWritable(input.second())); |
| } |
| } |
| static class MySeqFileTableSourceTarget extends SeqFileTableSourceTarget { |
| |
| public MySeqFileTableSourceTarget(String path, PTableType ptype) { |
| super(path, ptype); |
| } |
| |
| @Override |
| public Converter getConverter() { |
| return new SkipPTypesConverter(getType().getConverter()); |
| } |
| } |
| |
| static class SkipPTypesConverter implements Converter { |
| |
| private Converter delegate; |
| |
| public SkipPTypesConverter(Converter delegate) { |
| this.delegate = delegate; |
| } |
| |
| @Override |
| public Object convertInput(Object key, Object value) { |
| return delegate.convertInput(key, value); |
| } |
| |
| @Override |
| public Object convertIterableInput(Object key, Iterable value) { |
| return delegate.convertIterableInput(key, value); |
| } |
| |
| @Override |
| public Object outputKey(Object value) { |
| return delegate.outputKey(value); |
| } |
| |
| @Override |
| public Object outputValue(Object value) { |
| return delegate.outputValue(value); |
| } |
| |
| @Override |
| public Class getKeyClass() { |
| return delegate.getKeyClass(); |
| } |
| |
| @Override |
| public Class getValueClass() { |
| return delegate.getValueClass(); |
| } |
| |
| @Override |
| public boolean applyPTypeTransforms() { |
| return false; |
| } |
| } |
| } |