| /* |
| * 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.test; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import java.io.File; |
| import java.io.FileWriter; |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.apache.pig.PigServer; |
| import org.apache.pig.data.Tuple; |
| import org.apache.pig.impl.io.FileLocalizer; |
| import org.apache.pig.impl.logicalLayer.schema.Schema; |
| import org.apache.pig.impl.util.Utils; |
| import org.junit.After; |
| import org.junit.AfterClass; |
| import org.junit.Before; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| |
| /** |
| * Test project of multiple fields |
| */ |
| public class TestProjectStarExpander { |
| private static final String INP_FILE_5FIELDS = "TestProjectStarExpander1"; |
| |
| @Before |
| public void setUp() throws Exception { |
| FileLocalizer.setInitialized(false); |
| } |
| |
| |
| @After |
| public void tearDown() throws Exception { |
| } |
| |
| @BeforeClass |
| public static void oneTimeSetup() throws IOException, Exception { |
| // first input file |
| PrintWriter w = new PrintWriter(new FileWriter(INP_FILE_5FIELDS)); |
| w.println("10\t20\t30\t40\t50"); |
| w.println("11\t21\t31\t41\t51"); |
| w.close(); |
| |
| } |
| |
| @AfterClass |
| public static void oneTimeTearDown() throws Exception { |
| |
| new File(INP_FILE_5FIELDS).delete(); |
| |
| } |
| |
| |
| |
| @Test |
| public void testProjectStarForeach() throws Exception { |
| PigServer pig = new PigServer(Util.getLocalTestMode()); |
| |
| //specifying the new aliases only for initial set of fields |
| String query = |
| " l1 = load '" + INP_FILE_5FIELDS + "' as (a : int, b : int, c : int, d : int, e : int);" |
| + "f = foreach l1 generate * as (aa, bb, cc);" |
| ; |
| |
| Util.registerMultiLineQuery(pig, query); |
| |
| Schema expectedSch = Utils.getSchemaFromString("aa : int, bb : int, cc : int, d : int, e : int"); |
| Schema sch = pig.dumpSchema("f"); |
| assertEquals("Checking expected schema", expectedSch, sch); |
| |
| //specifying aliases for all fields |
| query = |
| " l1 = load '" + INP_FILE_5FIELDS + "' as (a : int, b : int, c : int, d : int, e : int);" |
| + "f = foreach l1 generate * as (aa, bb, cc, dd, ee);" |
| ; |
| Util.registerMultiLineQuery(pig, query); |
| |
| expectedSch = Utils.getSchemaFromString("aa : int, bb : int, cc : int, dd : int, ee : int"); |
| sch = pig.dumpSchema("f"); |
| assertEquals("Checking expected schema", expectedSch, sch); |
| Iterator<Tuple> it = pig.openIterator("f"); |
| |
| List<Tuple> expectedRes = |
| Util.getTuplesFromConstantTupleStrings( |
| new String[] { |
| "(10,20,30,40,50)", |
| "(11,21,31,41,51)", |
| }); |
| Util.checkQueryOutputsAfterSort(it, expectedRes); |
| |
| } |
| |
| /** |
| * Test projecting multiple * |
| * @throws IOException |
| * @throws ParseException |
| */ |
| @Test |
| public void testProjectStarMulti() throws Exception { |
| PigServer pig = new PigServer(Util.getLocalTestMode()); |
| String query = |
| " l1 = load '" + INP_FILE_5FIELDS + "' as (a : int, b : int, c : int);" |
| + "f = foreach l1 generate * as (aa, bb, cc), *;" |
| ; |
| |
| Util.registerMultiLineQuery(pig, query); |
| |
| Schema expectedSch = Utils.getSchemaFromString( |
| "aa : int, bb : int, cc : int, a : int, b : int, c : int"); |
| Schema sch = pig.dumpSchema("f"); |
| assertEquals("Checking expected schema", expectedSch, sch); |
| List<Tuple> expectedRes = |
| Util.getTuplesFromConstantTupleStrings( |
| new String[] { |
| "(10,20,30,10,20,30)", |
| "(11,21,31,11,21,31)", |
| }); |
| Iterator<Tuple> it = pig.openIterator("f"); |
| Util.checkQueryOutputsAfterSort(it, expectedRes); |
| } |
| |
| } |