| /* |
| * 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.impl.builtin; |
| |
| import org.apache.pig.ExecType; |
| import org.apache.pig.PigServer; |
| import org.apache.pig.backend.executionengine.ExecException; |
| import org.apache.pig.data.Tuple; |
| import org.apache.pig.test.MiniGenericCluster; |
| import org.junit.AfterClass; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| |
| import java.io.IOException; |
| import java.util.Arrays; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import com.google.common.collect.Lists; |
| |
| import static org.apache.pig.builtin.mock.Storage.*; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| public class TestHiveUDTF { |
| private static PigServer pigServer = null; |
| private static MiniGenericCluster cluster = MiniGenericCluster.buildCluster(); |
| |
| @BeforeClass |
| public static void oneTimeSetup() throws ExecException { |
| pigServer = new PigServer(ExecType.LOCAL); |
| } |
| |
| @AfterClass |
| public static void oneTimeTearDown() throws Exception { |
| cluster.shutDown(); |
| } |
| |
| @Test |
| public void testHiveUDTFOnBagInput() throws IOException { |
| Data data = resetData(pigServer); |
| |
| Tuple tuple = tuple(bag(tuple("a"), tuple("b"), tuple("c"))); |
| |
| data.set("TestHiveUDTF", tuple); |
| |
| pigServer.registerQuery("define posexplode HiveUDTF('posexplode');"); |
| pigServer.registerQuery("A = load 'TestHiveUDTF' USING mock.Storage() as (a0:{(b0:chararray)});"); |
| pigServer.registerQuery("B = foreach A generate posexplode(a0);"); |
| |
| Iterator<Tuple> result = pigServer.openIterator("B"); |
| List<Tuple> out = Lists.newArrayList(result); |
| |
| assertEquals(2, out.size()); |
| assertTrue("Result doesn't contain the HiveUDTF output", |
| out.contains(tuple(bag(tuple(0, "a"), tuple(1, "b"), tuple(2, "c"))))); |
| assertTrue("Result doesn't contain an empty bag", |
| out.contains(tuple(bag()))); |
| } |
| |
| @Test |
| public void testHiveUDTFOnBagInputWithTwoProjection() throws IOException { |
| Data data = resetData(pigServer); |
| |
| Tuple tuple = tuple(bag(tuple("a"), tuple("b"), tuple("c"))); |
| |
| data.set("TestHiveUDTF", tuple); |
| |
| pigServer.registerQuery("define posexplode HiveUDTF('posexplode');"); |
| pigServer.registerQuery("A = load 'TestHiveUDTF' USING mock.Storage() as (a0:{(b0:chararray)});"); |
| pigServer.registerQuery("B = foreach A generate a0, posexplode(a0);"); |
| |
| Iterator<Tuple> result = pigServer.openIterator("B"); |
| List<Tuple> out = Lists.newArrayList(result); |
| |
| assertEquals(2, out.size()); |
| assertTrue("Result doesn't contain the HiveUDTF output", |
| out.contains(tuple(bag(tuple("a"), tuple("b"), tuple("c")), bag(tuple(0, "a"), tuple(1, "b"), tuple(2, "c"))))); |
| assertTrue("Result doesn't contain an empty bag", |
| out.contains(tuple(null, bag()))); |
| } |
| |
| @Test |
| public void testHiveUDTFOnClose() throws IOException { |
| Data data = resetData(pigServer); |
| |
| List<Tuple> tuples = Arrays.asList(tuple("a", 1), tuple("a", 2), tuple("a", 3)); |
| |
| data.set("TestHiveUDTF", tuples); |
| |
| pigServer.registerQuery("define COUNT2 HiveUDTF('org.apache.hadoop.hive.contrib.udtf.example.GenericUDTFCount2');"); |
| pigServer.registerQuery("a = load 'TestHiveUDTF' USING mock.Storage() as (name:chararray, id:int);"); |
| pigServer.registerQuery("b = foreach a generate flatten(COUNT2(name));"); |
| |
| Iterator<Tuple> result = pigServer.openIterator("b"); |
| List<Tuple> out = Lists.newArrayList(result); |
| |
| assertEquals(2, out.size()); |
| assertEquals(tuple(3), out.get(0)); |
| assertEquals(tuple(3), out.get(1)); |
| } |
| |
| } |