| /* |
| * 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 static org.junit.Assert.assertTrue; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.Random; |
| |
| import org.apache.pig.PigServer; |
| import org.apache.pig.backend.executionengine.ExecException; |
| import org.apache.pig.backend.hadoop.executionengine.physicalLayer.POStatus; |
| import org.apache.pig.backend.hadoop.executionengine.physicalLayer.Result; |
| import org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POProject; |
| import org.apache.pig.data.DataBag; |
| import org.apache.pig.data.Tuple; |
| import org.apache.pig.data.TupleFactory; |
| import org.apache.pig.test.utils.GenPhyOp; |
| import org.apache.pig.test.utils.GenRandomData; |
| import org.apache.pig.test.utils.TestHelper; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| public class TestProject { |
| Random r; |
| |
| Tuple t, tRandom, tRandomAndNull; |
| |
| Result res; |
| |
| POProject proj; |
| |
| @Before |
| public void setUp() throws Exception { |
| r = new Random(); |
| tRandom = GenRandomData.genRandSmallBagTuple(r, 10, 100); |
| tRandomAndNull = GenRandomData.genRandSmallBagTupleWithNulls(r, 10, 100); |
| res = new Result(); |
| proj = GenPhyOp.exprProject(); |
| } |
| |
| @Test |
| public void testGetNext() throws ExecException, IOException { |
| t = tRandom; |
| proj.attachInput(t); |
| for (int j = 0; j < t.size(); j++) { |
| proj.attachInput(t); |
| proj.setColumn(j); |
| |
| res = proj.getNext(); |
| assertEquals(POStatus.STATUS_OK, res.returnStatus); |
| assertEquals(t.get(j), res.result); |
| } |
| } |
| |
| @Test |
| public void testGetNextTuple() throws IOException, ExecException { |
| t = tRandom; |
| proj.attachInput(t); |
| proj.setColumn(0); |
| proj.setOverloaded(true); |
| DataBag inpBag = (DataBag)t.get(0); |
| int cntr = 0; |
| boolean contains = true; |
| while (true) { |
| res = proj.getNextTuple(); |
| if (res.returnStatus == POStatus.STATUS_EOP) |
| break; |
| if (!TestHelper.bagContains(inpBag, (Tuple)res.result)) { |
| contains = false; |
| break; |
| } |
| ++cntr; |
| } |
| assertEquals((float)inpBag.size(), (float)cntr, 0.01f); |
| assertTrue(contains); |
| |
| proj.attachInput(t); |
| proj.setColumn(8); |
| proj.setOverloaded(false); |
| res = proj.getNextTuple(); |
| assertEquals(POStatus.STATUS_OK, res.returnStatus); |
| assertEquals(t.get(8), res.result); |
| } |
| |
| @Test |
| public void testGetNextMultipleProjections() throws ExecException, IOException { |
| t = tRandom; |
| ArrayList<Integer> cols = new ArrayList<Integer>(); |
| proj.attachInput(t); |
| for (int j = 0; j < t.size() - 1; j++) { |
| proj.attachInput(t); |
| cols.add(j); |
| cols.add(j + 1); |
| proj.setColumns(cols); |
| |
| res = proj.getNext(); |
| TupleFactory tupleFactory = TupleFactory.getInstance(); |
| ArrayList<Object> objList = new ArrayList<Object>(); |
| objList.add(t.get(j)); |
| objList.add(t.get(j + 1)); |
| Tuple expectedResult = tupleFactory.newTuple(objList); |
| assertEquals(POStatus.STATUS_OK, res.returnStatus); |
| assertEquals(expectedResult, res.result); |
| cols.clear(); |
| } |
| } |
| |
| @Test |
| public void testGetNextTupleMultipleProjections() throws IOException, ExecException { |
| t = tRandom; |
| proj.attachInput(t); |
| proj.setOverloaded(true); |
| int j = 0; |
| ArrayList<Integer> cols = new ArrayList<Integer>(); |
| |
| while (true) { |
| cols.add(j); |
| cols.add(j + 1); |
| proj.setColumns(cols); |
| res = proj.getNextTuple(); |
| if (res.returnStatus == POStatus.STATUS_EOP) |
| break; |
| TupleFactory tupleFactory = TupleFactory.getInstance(); |
| ArrayList<Object> objList = new ArrayList<Object>(); |
| objList.add(t.get(j)); |
| objList.add(t.get(j + 1)); |
| Tuple expectedResult = tupleFactory.newTuple(objList); |
| assertEquals(POStatus.STATUS_OK, res.returnStatus); |
| assertEquals(expectedResult, res.result); |
| ++j; |
| cols.clear(); |
| } |
| |
| proj.attachInput(t); |
| proj.setColumn(8); |
| proj.setOverloaded(false); |
| res = proj.getNextTuple(); |
| assertEquals(POStatus.STATUS_OK, res.returnStatus); |
| assertEquals(t.get(8), res.result); |
| } |
| |
| @Test |
| public void testGetNextWithNull() throws ExecException, IOException { |
| t = tRandomAndNull; |
| proj.attachInput(t); |
| for (int j = 0; j < t.size(); j++) { |
| proj.attachInput(t); |
| proj.setColumn(j); |
| |
| res = proj.getNext(); |
| assertEquals(POStatus.STATUS_OK, res.returnStatus); |
| assertEquals(t.get(j), res.result); |
| } |
| } |
| |
| @Test |
| public void testGetNextTupleWithNull() throws IOException, ExecException { |
| t = tRandomAndNull; |
| proj.attachInput(t); |
| proj.setColumn(0); |
| proj.setOverloaded(true); |
| DataBag inpBag = (DataBag)t.get(0); |
| int cntr = 0; |
| boolean contains = true; |
| while (true) { |
| res = proj.getNextTuple(); |
| if (res.returnStatus == POStatus.STATUS_EOP) |
| break; |
| if (!TestHelper.bagContains(inpBag, (Tuple)res.result)) { |
| contains = false; |
| break; |
| } |
| ++cntr; |
| } |
| assertEquals((float)inpBag.size(), (float)cntr, 0.01f); |
| assertTrue(contains); |
| |
| proj.attachInput(t); |
| proj.setColumn(8); |
| proj.setOverloaded(false); |
| res = proj.getNextTuple(); |
| assertEquals(POStatus.STATUS_OK, res.returnStatus); |
| assertEquals(t.get(8), res.result); |
| } |
| |
| @Test |
| public void testGetNextMultipleProjectionsWithNull() throws ExecException, IOException { |
| t = tRandomAndNull; |
| ArrayList<Integer> cols = new ArrayList<Integer>(); |
| proj.attachInput(t); |
| for (int j = 0; j < t.size() - 1; j++) { |
| proj.attachInput(t); |
| cols.add(j); |
| cols.add(j + 1); |
| proj.setColumns(cols); |
| |
| res = proj.getNext(); |
| TupleFactory tupleFactory = TupleFactory.getInstance(); |
| ArrayList<Object> objList = new ArrayList<Object>(); |
| objList.add(t.get(j)); |
| objList.add(t.get(j + 1)); |
| Tuple expectedResult = tupleFactory.newTuple(objList); |
| assertEquals(POStatus.STATUS_OK, res.returnStatus); |
| assertEquals(expectedResult, res.result); |
| cols.clear(); |
| } |
| } |
| |
| @Test |
| public void testGetNextTupleMultipleProjectionsWithNull() throws IOException, ExecException { |
| t = tRandomAndNull; |
| proj.attachInput(t); |
| proj.setOverloaded(true); |
| int j = 0; |
| ArrayList<Integer> cols = new ArrayList<Integer>(); |
| |
| while (true) { |
| cols.add(j); |
| cols.add(j + 1); |
| proj.setColumns(cols); |
| res = proj.getNextTuple(); |
| if (res.returnStatus == POStatus.STATUS_EOP) |
| break; |
| TupleFactory tupleFactory = TupleFactory.getInstance(); |
| ArrayList<Object> objList = new ArrayList<Object>(); |
| objList.add(t.get(j)); |
| objList.add(t.get(j + 1)); |
| Tuple expectedResult = tupleFactory.newTuple(objList); |
| assertEquals(POStatus.STATUS_OK, res.returnStatus); |
| assertEquals(expectedResult, res.result); |
| ++j; |
| cols.clear(); |
| } |
| |
| proj.attachInput(t); |
| proj.setColumn(8); |
| proj.setOverloaded(false); |
| res = proj.getNextTuple(); |
| assertEquals(POStatus.STATUS_OK, res.returnStatus); |
| assertEquals(t.get(8), res.result); |
| } |
| |
| @Test |
| public void testMissingCols1() throws Exception { |
| String inputFileName = "TestProject-testMissingCols1-input.txt"; |
| String input[] = { "hello\tworld", "good\tbye" }; |
| Util.createLocalInputFile(inputFileName, input); |
| String query = "a = load '" + inputFileName |
| + "' as (s1:chararray, s2:chararray, extra:chararray);" + |
| "b = foreach a generate s1, s2, extra;"; |
| |
| PigServer ps = new PigServer(Util.getLocalTestMode()); |
| Util.registerMultiLineQuery(ps, query); |
| Iterator<Tuple> it = ps.openIterator("b"); |
| Tuple[] expectedResults = new Tuple[] { |
| (Tuple)Util.getPigConstant("('hello', 'world', null)"), |
| (Tuple)Util.getPigConstant("('good', 'bye', null)") |
| }; |
| int i = 0; |
| while (it.hasNext()) { |
| assertEquals(expectedResults[i++], it.next()); |
| } |
| } |
| |
| @Test |
| public void testMissingCols2() throws Exception { |
| String inputFileName = "TestProject-testMissingCols2-input.txt"; |
| String input[] = { "1\t(hello,world)", "2\t(good,bye)" }; |
| Util.createLocalInputFile(inputFileName, input); |
| // in the script, PigStorage will return a null for the tuple field |
| // since it does not comply with the schema |
| String query = "a = load '" + inputFileName + "' as (i:int, " + |
| "t:tuple(s1:chararray, s2:chararray, s3:chararray));" + |
| "b = foreach a generate t.(s2,s3);"; |
| |
| PigServer ps = new PigServer(Util.getLocalTestMode()); |
| Util.registerMultiLineQuery(ps, query); |
| Iterator<Tuple> it = ps.openIterator("b"); |
| Tuple[] expectedResults = new Tuple[] { |
| (Tuple)Util.getPigConstant("((null, null))"), |
| (Tuple)Util.getPigConstant("((null, null))") |
| }; |
| int i = 0; |
| while (it.hasNext()) { |
| assertEquals(expectedResults[i++], it.next()); |
| } |
| } |
| |
| @Test |
| public void testMissingCols3() throws Exception { |
| String inputFileName = "TestProject-testMissingCols3-input.txt"; |
| String input[] = { "hello\tworld", "good\tbye" }; |
| Util.createLocalInputFile(inputFileName, input); |
| String query = "a = load '" + inputFileName + "';" + |
| "b = group a all;" + |
| "c = foreach b generate flatten(a.($1, $2)),a.$2;"; |
| |
| PigServer ps = new PigServer(Util.getLocalTestMode()); |
| Util.registerMultiLineQuery(ps, query); |
| Iterator<Tuple> it = ps.openIterator("c"); |
| Tuple[] expectedResults = new Tuple[] { |
| (Tuple)Util.getPigConstant("('world', null, {(null),(null)})"), |
| (Tuple)Util.getPigConstant("('bye', null, {(null),(null)})") |
| }; |
| boolean contains0 = false; |
| boolean contains1 = false; |
| while (it.hasNext()) { |
| String actualResult = it.next().toString(); |
| if (actualResult.equals(expectedResults[0].toString())) |
| contains0 = true; |
| if (actualResult.equals(expectedResults[1].toString())) |
| contains1 = true; |
| } |
| assertTrue(contains0); |
| assertTrue(contains1); |
| } |
| |
| @Test |
| public void testNullTupleCols() throws Exception { |
| String inputFileName = "TestProject-testNullTupleCols-input.txt"; |
| String input[] = { "1\t(hello,world)", "2\t(good)", "3" }; |
| Util.createLocalInputFile(inputFileName, input); |
| // PigStorage will return null as the value for the tuple field in the |
| // second record since it does not comply with the schema and in the |
| // third record since the field is absent |
| String query = "a = load '" + inputFileName + "' as (i:int, " + |
| "t:tuple(s1:chararray, s2:chararray));" + |
| "b = foreach a generate t.s1, t.s2;"; |
| |
| PigServer ps = new PigServer(Util.getLocalTestMode()); |
| Util.registerMultiLineQuery(ps, query); |
| Iterator<Tuple> it = ps.openIterator("b"); |
| Tuple[] expectedResults = new Tuple[] { |
| (Tuple)Util.getPigConstant("('hello', 'world')"), |
| (Tuple)Util.getPigConstant("(null, null)"), |
| (Tuple)Util.getPigConstant("(null, null)") |
| }; |
| int i = 0; |
| while (it.hasNext()) { |
| assertEquals(expectedResults[i++], it.next()); |
| } |
| } |
| } |