| /* |
| * 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.drill.exec.physical.impl.flatten; |
| |
| import org.apache.drill.PlanTestBase; |
| import org.apache.drill.categories.PlannerTest; |
| import org.apache.drill.categories.UnlikelyTest; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| @Category({UnlikelyTest.class, PlannerTest.class}) |
| public class TestFlattenPlanning extends PlanTestBase { |
| |
| @Test |
| public void testFlattenPlanningAvoidUnnecessaryProject() throws Exception { |
| // Because of Java7 vs Java8 map ordering differences, we check for both cases |
| // See DRILL-4331 for details |
| testPlanMatchingPatterns("select flatten(complex), rownum from cp.`store/json/test_flatten_mappify2.json`", |
| new String[]{"\\QProject(EXPR$0=[$1], rownum=[$0])\\E|\\QProject(EXPR$0=[$0], rownum=[$1])\\E"}, |
| new String[]{"\\QProject(EXPR$0=[$0], EXPR$1=[$1], EXPR$3=[$1])\\E|\\QProject(EXPR$0=[$1], EXPR$1=[$0], EXPR$3=[$0])\\E"}); |
| } |
| |
| @Test // DRILL-4121 : push partial filter past projects. |
| public void testPushFilterPastProjectWithFlatten() throws Exception { |
| final String query = |
| " select comp, rownum " + |
| " from (select flatten(complex) comp, rownum " + |
| " from cp.`store/json/test_flatten_mappify2.json`) " + |
| " where comp > 1 " + // should not be pushed down |
| " and rownum = 100"; // should be pushed down. |
| |
| final String[] expectedPlans = {"(?s)Filter.*>.*Flatten.*Filter.*=.*"}; |
| final String[] excludedPlans = {"Filter.*AND.*"}; |
| PlanTestBase.testPlanMatchingPatterns(query, expectedPlans, excludedPlans); |
| } |
| |
| @Test // DRILL-4121 : push partial filter past projects : neg test case |
| public void testPushFilterPastProjectWithFlattenNeg() throws Exception { |
| final String query = |
| " select comp, rownum " + |
| " from (select flatten(complex) comp, rownum " + |
| " from cp.`store/json/test_flatten_mappify2.json`) " + |
| " where comp > 1 " + // should NOT be pushed down |
| " OR rownum = 100"; // should NOT be pushed down. |
| |
| final String[] expectedPlans = {"(?s)Filter.*OR.*Flatten"}; |
| final String[] excludedPlans = {"(?s)Filter.*Flatten.*Filter.*"}; |
| PlanTestBase.testPlanMatchingPatterns(query, expectedPlans, excludedPlans); |
| } |
| |
| @Test // DRILL-6099 : push limit past flatten(project) |
| public void testLimitPushdownPastFlatten() throws Exception { |
| final String query = "select rownum, flatten(complex) comp from cp.`store/json/test_flatten_mappify2.json` limit 1"; |
| //DRILL-6318 : limit should not push past flatten(project) |
| final String[] expectedPatterns = {"(?s).*Limit.*Flatten.*Project.*"}; |
| final String[] excludedPatterns = {"(?s).*Limit.*Flatten.*Limit.*"}; |
| PlanTestBase.testPlanMatchingPatterns(query, expectedPatterns, excludedPatterns); |
| } |
| |
| } |