/**
* Copyright 2011-2014 Asakusa Framework Team.
*
* 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 com.asakusafw.compiler.flow.stage;
import static org.hamcrest.Matchers.*;
import static org.junit.Assert.*;
import java.io.IOException;
import java.util.List;
import org.apache.hadoop.io.RawComparator;
import org.apache.hadoop.io.Writable;
import org.junit.Test;
import com.asakusafw.compiler.flow.JobflowCompilerTestRoot;
import com.asakusafw.compiler.flow.example.CoGroupStage;
import com.asakusafw.compiler.flow.plan.StageBlock;
import com.asakusafw.compiler.flow.plan.StageGraph;
import com.asakusafw.compiler.flow.stage.ShuffleModel.Segment;
import com.asakusafw.compiler.flow.testing.model.Ex1;
import com.asakusafw.compiler.flow.testing.model.Ex2;
import com.asakusafw.runtime.flow.SegmentedWritable;
import com.asakusafw.utils.java.model.syntax.Name;
import com.asakusafw.vocabulary.flow.FlowDescription;
/**
* Test for {@link ShuffleSortComparatorEmitter}.
*/
public class ShuffleSortComparatorEmitterTest extends JobflowCompilerTestRoot {
/**
* 単純なシャッフルのテスト。
* @throws Exception 出力に失敗した場合
*/
@Test
public void simple() throws Exception {
ShuffleModel analyzed = shuffle(CoGroupStage.class);
ShuffleSortComparatorEmitter emitter = new ShuffleSortComparatorEmitter(environment);
Name key = emitKey(analyzed);
Name name = emitter.emit(analyzed, key);
ClassLoader loader = start();
@SuppressWarnings("unchecked")
RawComparator<Writable> cmp = (RawComparator<Writable>) create(loader, name);
SegmentedWritable k1 = (SegmentedWritable) create(loader, key);
SegmentedWritable k2 = (SegmentedWritable) create(loader, key);
List<Segment> segments = analyzed.getSegments();
assertThat(segments.size(), is(2));
Segment seg1 = segments.get(0);
Segment seg2 = segments.get(1);
assertThat(seg1.getTerms().size(), is(2));
assertThat(seg2.getTerms().size(), is(2));
Ex1 ex1 = new Ex1();
ex1.setSid(10);
ex1.setValue(100);
ex1.setStringAsString("ex1");
setShuffleKey(seg1, k1, ex1);
ex1.setStringAsString("ex2");
setShuffleKey(seg1, k2, ex1);
assertThat(cmp.compare(k1, k2), is(0));
assertThat(cmp.compare(k2, k1), is(0));
setShuffleKey(seg1, k1, ex1);
ex1.setSid(9);
setShuffleKey(seg1, k2, ex1);
assertThat(cmp.compare(k1, k2), greaterThan(0));
assertThat(cmp.compare(k2, k1), lessThan(0));
setShuffleKey(seg1, k1, ex1);
ex1.setSid(Integer.MIN_VALUE);
setShuffleKey(seg1, k2, ex1);
assertThat(cmp.compare(k1, k2), greaterThan(0));
assertThat(cmp.compare(k2, k1), lessThan(0));
Ex2 ex2 = new Ex2();
ex2.setSid(2);
ex2.setValue(100);
ex2.setStringAsString("ex2");
setShuffleKey(seg2, k1, ex2);
ex2.setSid(3);
setShuffleKey(seg2, k2, ex2);
assertThat(cmp.compare(k1, k2), is(0));
assertThat(cmp.compare(k2, k1), is(0));
setShuffleKey(seg2, k1, ex2);
ex2.setStringAsString("ex3");
setShuffleKey(seg2, k2, ex2);
assertThat(cmp.compare(k1, k2), greaterThan(0));
assertThat(cmp.compare(k2, k1), lessThan(0));
setShuffleKey(seg2, k1, ex2);
ex2.setStringAsString("");
setShuffleKey(seg2, k2, ex2);
assertThat(cmp.compare(k1, k2), lessThan(0));
assertThat(cmp.compare(k2, k1), greaterThan(0));
setShuffleKey(seg2, k1, ex2);
ex2.setString(null);
setShuffleKey(seg2, k2, ex2);
assertThat(cmp.compare(k1, k2), lessThan(0));
assertThat(cmp.compare(k2, k1), greaterThan(0));
setShuffleKey(seg1, k1, ex1);
setShuffleKey(seg2, k2, ex2);
assertThat(cmp.compare(k1, k2), lessThan(0));
assertThat(cmp.compare(k2, k1), greaterThan(0));
}
private ShuffleModel shuffle(Class<? extends FlowDescription> aClass) {
StageGraph graph = jfToStageGraph(aClass);
assertThat(graph.getStages().size(), is(1));
StageBlock target = graph.getStages().get(0);
ShuffleAnalyzer analyzer = new ShuffleAnalyzer(environment);
ShuffleModel analyzed = analyzer.analyze(target);
return analyzed;
}
private Name emitKey(ShuffleModel model) throws IOException {
ShuffleKeyEmitter emitter = new ShuffleKeyEmitter(environment);
Name name = emitter.emit(model);
return name;
}
}