| /* |
| * 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.pig.parser; |
| |
| import junit.framework.Assert; |
| |
| import org.apache.pig.impl.logicalLayer.FrontendException; |
| import org.apache.pig.newplan.logical.relational.LogicalPlan; |
| import org.apache.pig.newplan.logical.visitor.UnionOnSchemaSetter; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| @RunWith(JUnit4.class) |
| public class TestUnionOnSchemaSetter { |
| @Test |
| public void test1() throws FrontendException { |
| String query = "A = load 'x' as ( u:int, v:long, w:bytearray); " + |
| "B = load 'y' as ( u:int, v:int, z:long); " + |
| "C = union onschema A, B; " + |
| "D = store C into 'output';"; |
| LogicalPlan plan = generateLogicalPlan( query ); |
| if( plan != null ) { |
| int nodeCount = plan.size(); |
| UnionOnSchemaSetter visitor = new UnionOnSchemaSetter( plan ); |
| visitor.visit(); |
| System.out.println( "Plan after setter: " + plan.toString() ); |
| Assert.assertEquals( nodeCount + 2, plan.size() ); |
| } |
| } |
| |
| @Test |
| public void test2() throws FrontendException { |
| String query = "A = load 'x' as ( u:int, v:long, w:bytearray); " + |
| "B = load 'y' as ( u:int, v:int, w:bytearray); " + |
| "C = union onschema A, B; " + |
| "D = store C into 'output';"; |
| LogicalPlan plan = generateLogicalPlan( query ); |
| if( plan != null ) { |
| int nc = plan.size(); |
| UnionOnSchemaSetter visitor = new UnionOnSchemaSetter( plan ); |
| visitor.visit(); |
| System.out.println( "Plan after setter: " + plan.toString() ); |
| Assert.assertEquals( nc + 1, plan.size() ); |
| } |
| } |
| |
| @Test |
| public void test3() throws FrontendException { |
| String query = "A = load 'x' as ( u:int, v:long, w:bytearray); " + |
| "B = load 'y' as ( u:int, v:long, w:bytearray); " + |
| "C = union onschema A, B; " + |
| "D = store C into 'output';"; |
| LogicalPlan plan = generateLogicalPlan( query ); |
| if( plan != null ) { |
| int nc = plan.size(); |
| UnionOnSchemaSetter visitor = new UnionOnSchemaSetter( plan ); |
| visitor.visit(); |
| System.out.println( "Plan after setter: " + plan.toString() ); |
| Assert.assertEquals( nc, plan.size() ); |
| } |
| } |
| |
| @Test |
| public void testMergeCompatibleSchema() throws FrontendException { |
| String query = "A = load 'x' as ( u:int, v:long, w:int); " + |
| "B = load 'y' as ( u:int, v:long, w:long); " + |
| "C = union onschema A, B; " + |
| "D = store C into 'output';"; |
| LogicalPlan plan = generateLogicalPlan( query ); |
| if( plan != null ) { |
| int nc = plan.size(); |
| UnionOnSchemaSetter visitor = new UnionOnSchemaSetter( plan ); |
| visitor.visit(); |
| System.out.println( "Plan after setter: " + plan.toString() ); |
| Assert.assertEquals( nc+1, plan.size() ); // ForEach inserted before union |
| } |
| } |
| |
| private LogicalPlan generateLogicalPlan(String query) { |
| try { |
| return ParserTestingUtils.generateLogicalPlan( query ); |
| } catch(Exception ex) { |
| Assert.fail( "Failed to generate logical plan for query [" + query + "] due to exception: " + ex ); |
| } |
| return null; |
| } |
| |
| } |