| /* |
| * 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.wayang.core.mapping; |
| |
| import org.junit.Assert; |
| import org.junit.Test; |
| import org.apache.wayang.core.mapping.test.TestSinkToTestSink2Factory; |
| import org.apache.wayang.core.plan.wayangplan.Operator; |
| import org.apache.wayang.core.plan.wayangplan.OperatorAlternative; |
| import org.apache.wayang.core.plan.wayangplan.WayangPlan; |
| import org.apache.wayang.core.plan.wayangplan.UnarySink; |
| import org.apache.wayang.core.plan.wayangplan.UnarySource; |
| import org.apache.wayang.core.plan.wayangplan.test.TestSink; |
| import org.apache.wayang.core.plan.wayangplan.test.TestSink2; |
| import org.apache.wayang.core.plan.wayangplan.test.TestSource; |
| import org.apache.wayang.core.test.TestDataUnit; |
| import org.apache.wayang.core.types.DataSetType; |
| |
| /** |
| * Test suite for the {@link org.apache.wayang.core.mapping.PlanTransformation} class. |
| */ |
| public class PlanTransformationTest { |
| |
| @Test |
| public void testReplace() { |
| // Build the plan. |
| UnarySource source = new TestSource(DataSetType.createDefault(TestDataUnit.class)); |
| UnarySink sink = new TestSink(DataSetType.createDefault(TestDataUnit.class)); |
| source.connectTo(0, sink, 0); |
| WayangPlan plan = new WayangPlan(); |
| plan.addSink(sink); |
| |
| // Build the pattern. |
| OperatorPattern sinkPattern = new OperatorPattern("sink", new TestSink(DataSetType.createDefault(TestDataUnit.class)), false); |
| SubplanPattern subplanPattern = SubplanPattern.createSingleton(sinkPattern); |
| |
| // Build the replacement strategy. |
| ReplacementSubplanFactory replacementSubplanFactory = new TestSinkToTestSink2Factory(); |
| PlanTransformation planTransformation = new PlanTransformation(subplanPattern, replacementSubplanFactory).thatReplaces(); |
| |
| // Apply the replacement strategy to the graph. |
| planTransformation.transform(plan, Operator.FIRST_EPOCH + 1); |
| |
| // Check the correctness of the transformation. |
| Assert.assertEquals(1, plan.getSinks().size()); |
| final Operator replacedSink = plan.getSinks().iterator().next(); |
| Assert.assertTrue(replacedSink instanceof TestSink2); |
| Assert.assertEquals(source, replacedSink.getEffectiveOccupant(0).getOwner()); |
| } |
| |
| @Test |
| public void testIntroduceAlternative() { |
| // Build the plan. |
| UnarySource source = new TestSource(DataSetType.createDefault(TestDataUnit.class)); |
| UnarySink sink = new TestSink(DataSetType.createDefault(TestDataUnit.class)); |
| source.connectTo(0, sink, 0); |
| WayangPlan plan = new WayangPlan(); |
| plan.addSink(sink); |
| |
| // Build the pattern. |
| OperatorPattern sinkPattern = new OperatorPattern("sink", new TestSink(DataSetType.createDefault(TestDataUnit.class)), false); |
| SubplanPattern subplanPattern = SubplanPattern.createSingleton(sinkPattern); |
| |
| // Build the replacement strategy. |
| ReplacementSubplanFactory replacementSubplanFactory = new TestSinkToTestSink2Factory(); |
| PlanTransformation planTransformation = new PlanTransformation(subplanPattern, replacementSubplanFactory); |
| |
| // Apply the replacement strategy to the graph. |
| planTransformation.transform(plan, Operator.FIRST_EPOCH + 1); |
| |
| // Check the correctness of the transformation. |
| Assert.assertEquals(1, plan.getSinks().size()); |
| final Operator replacedSink = plan.getSinks().iterator().next(); |
| Assert.assertTrue(replacedSink instanceof OperatorAlternative); |
| OperatorAlternative operatorAlternative = (OperatorAlternative) replacedSink; |
| Assert.assertEquals(2, operatorAlternative.getAlternatives().size()); |
| Assert.assertTrue(operatorAlternative.getAlternatives().get(0).getContainedOperator() instanceof TestSink); |
| Assert.assertTrue(operatorAlternative.getAlternatives().get(1).getContainedOperator() instanceof TestSink2); |
| Assert.assertEquals(source, replacedSink.getEffectiveOccupant(0).getOwner()); |
| } |
| |
| @Test |
| public void testFlatAlternatives() { |
| // Build the plan. |
| UnarySource source = new TestSource(DataSetType.createDefault(TestDataUnit.class)); |
| UnarySink sink = new TestSink(DataSetType.createDefault(TestDataUnit.class)); |
| source.connectTo(0, sink, 0); |
| WayangPlan plan = new WayangPlan(); |
| plan.addSink(sink); |
| |
| // Build the pattern. |
| OperatorPattern sinkPattern = new OperatorPattern("sink", new TestSink(DataSetType.createDefault(TestDataUnit.class)), false); |
| SubplanPattern subplanPattern = SubplanPattern.createSingleton(sinkPattern); |
| |
| // Build the replacement strategy. |
| ReplacementSubplanFactory replacementSubplanFactory = new TestSinkToTestSink2Factory(); |
| PlanTransformation planTransformation = new PlanTransformation(subplanPattern, replacementSubplanFactory); |
| |
| // Apply the replacement strategy to the graph twice. |
| planTransformation.transform(plan, Operator.FIRST_EPOCH + 1); |
| planTransformation.transform(plan, Operator.FIRST_EPOCH + 1); |
| |
| // Check the correctness of the transformation. |
| Assert.assertEquals(1, plan.getSinks().size()); |
| final Operator replacedSink = plan.getSinks().iterator().next(); |
| Assert.assertTrue(replacedSink instanceof OperatorAlternative); |
| OperatorAlternative operatorAlternative = (OperatorAlternative) replacedSink; |
| Assert.assertEquals(3, operatorAlternative.getAlternatives().size()); |
| Assert.assertTrue(operatorAlternative.getAlternatives().get(0).getContainedOperator() instanceof TestSink); |
| Assert.assertTrue(operatorAlternative.getAlternatives().get(1).getContainedOperator() instanceof TestSink2); |
| Assert.assertTrue(operatorAlternative.getAlternatives().get(2).getContainedOperator() instanceof TestSink2); |
| Assert.assertEquals(source, replacedSink.getEffectiveOccupant(0).getOwner()); |
| } |
| |
| } |