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* 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.File;
import java.util.Iterator;
import org.apache.pig.ExecType;
import org.apache.pig.PigServer;
import org.apache.pig.builtin.PigStorage;
import org.apache.pig.data.Tuple;
import org.apache.pig.data.TupleFactory;
import org.junit.Before;
import org.junit.Test;
public class TestCommit {
private PigServer pigServer;
private static final TupleFactory mTf = TupleFactory.getInstance();
@Before
public void setUp() throws Exception{
pigServer = new PigServer(ExecType.LOCAL);
}
@Test
public void testCheckin1() throws Exception{
Tuple expected1 = mTf.newTuple(2);
Tuple expected2 = mTf.newTuple(2);
expected1.set(0, "independent");
expected1.set(1, 50.0);
expected2.set(0, "democrat");
expected2.set(1, 125.5);
File studentFile = Util.createInputFile("tmp", "student", new String[]{"joe smith:18:3.5","amy brown:25:2.5","jim fox:20:4.0","leo fu:55:3.0"});
File voterFile = Util.createInputFile("tmp", "voter", new String[]{"amy brown,25,democrat,25.50","amy brown,25,democrat,100","jim fox,20,independent,50.0"});
pigServer.registerQuery("a = load '" + Util.encodeEscape(studentFile.getAbsolutePath()) + "' using " + PigStorage.class.getName() + "(':') as (name, age, gpa);");
pigServer.registerQuery("b = load '" + Util.encodeEscape(voterFile.getAbsolutePath()) + "' using " + PigStorage.class.getName() + "(',') as (name, age, registration, contributions);");
pigServer.registerQuery("c = filter a by age < 50;");
pigServer.registerQuery("d = filter b by age < 50;");
pigServer.registerQuery("e = cogroup c by (name, age), d by (name, age);");
pigServer.registerQuery("f = foreach @ generate flatten(c), flatten(d);");
pigServer.registerQuery("g = group @ by registration;");
pigServer.registerQuery("h = foreach @ generate (chararray)group, SUM(f.d::contributions);");
pigServer.registerQuery("i = order @ by $1;");
Iterator<Tuple> iter = pigServer.openIterator("i");
int count = 0;
while(iter.hasNext()){
Tuple t = iter.next();
count++;
if (count == 1) {
assertEquals(t.get(0), expected1.get(0));
assertEquals(t.get(1), expected1.get(1));
} else if (count == 2){
assertEquals(t.get(0), expected2.get(0));
assertEquals(t.get(1), expected2.get(1));
}
}
assertEquals(2, count);
}
@Test
public void testCheckin2() throws Exception{
Tuple expected1 = mTf.newTuple(4);
Tuple expected2 = mTf.newTuple(4);
File testFile = Util.createInputFile("tmp", "testCheckin2-input.txt", new String[]{"joe smith:18:3.5","amy brown:18:2.5","jim fox:20:4.0","leo fu:55:3.0", "amy smith:20:3.0"});
expected1.set(0, 18);
expected1.set(1, 1L);
expected1.set(2, "joe smith");
expected1.set(3, 18);
expected2.set(0, 55);
expected2.set(1, 1L);
expected2.set(2, "leo fu");
expected2.set(3, 55);
pigServer.registerQuery("a = load '" + Util.encodeEscape(testFile.getAbsolutePath()) + "' using " + PigStorage.class.getName() + "(':') as (name: chararray, age: int, gpa: float);");
pigServer.registerQuery("b = group @ by age;");
pigServer.registerQuery("c = foreach @ { d = filter a by gpa > 2.5; " +
"e = order a by name; f = a.age; g = distinct f; " +
" generate group, COUNT(d), MAX (e.name), MIN(g.$0);};");
pigServer.registerQuery("h = order c by $1;");
pigServer.registerQuery("i = limit @ 2;");
pigServer.store("i", "testCheckin2-output.txt");
pigServer.registerQuery("x = load 'testCheckin2-output.txt' as (age: int, cnt: long, max: chararray, min: int);");
pigServer.registerQuery("y = foreach @ generate age, cnt, max, min;");
Iterator<Tuple> iter = pigServer.openIterator("y");
int count = 0;
boolean contain1=false, contain2=false;
while(iter.hasNext()){
Tuple t = iter.next();
count++;
if (t.get(0).equals(expected1.get(0)) && t.get(1).equals(expected1.get(1)) && t.get(2).equals(expected1.get(2)) && t.get(3).equals(expected1.get(3))) {
contain1 = true;
}
if (t.get(0).equals(expected2.get(0)) && t.get(1).equals(expected2.get(1)) && t.get(2).equals(expected2.get(2)) && t.get(3).equals(expected2.get(3))) {
contain2 = true;
}
}
pigServer.deleteFile("testCheckin2-output.txt");
assertEquals(2, count);
assertTrue(contain1);
assertTrue(contain2);
}
}