/*
* 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.assertFalse;
import static org.junit.Assert.assertTrue;
import java.io.File;
import java.io.FileOutputStream;
import java.io.PrintStream;
import java.util.Iterator;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
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.impl.io.FileLocalizer;
import org.junit.Before;
import org.junit.Test;
public class TestFilterOpString {
private final Log log = LogFactory.getLog(getClass());
private static int LOOP_COUNT = 1024;
private PigServer pig;
@Before
public void setUp() throws Exception {
FileLocalizer.deleteTempFiles();
pig = new PigServer(ExecType.LOCAL);
}
@Test
public void testStringEq() throws Throwable {
File tmpFile = File.createTempFile("test", "txt");
PrintStream ps = new PrintStream(new FileOutputStream(tmpFile));
int expectedCount = 0;
for(int i = 0; i < LOOP_COUNT; i++) {
if(i % 5 == 0) {
ps.println("a:" + i);
// test with nulls
ps.println("a:");
ps.println(":a");
ps.println(":");
} else {
ps.println("ab:ab");
expectedCount++;
}
}
ps.close();
pig.registerQuery("A=load '"
+ Util.generateURI(tmpFile.toString(), pig.getPigContext())
+ "' using " + PigStorage.class.getName() + "(':');");
String query = "A = filter A by $0 eq $1;";
log.info(query);
pig.registerQuery(query);
Iterator<Tuple> it = pig.openIterator("A");
tmpFile.delete();
int count = 0;
while(it.hasNext()) {
Tuple t = it.next();
String first = t.get(0).toString();
String second = t.get(1).toString();
count++;
assertEquals(first, second);
}
assertEquals(expectedCount, count);
}
@Test
public void testStringNeq() throws Throwable {
File tmpFile = File.createTempFile("test", "txt");
PrintStream ps = new PrintStream(new FileOutputStream(tmpFile));
int expectedCount = 0;
for(int i = 0; i < LOOP_COUNT; i++) {
if(i % 5 == 0) {
ps.println("ab:ab");
} else if (i % 3 == 0) {
ps.println("ab:abc");
expectedCount++;
} else {
// test with nulls
ps.println(":");
ps.println("ab:");
ps.println(":ab");
}
}
ps.close();
pig.registerQuery("A=load '"
+ Util.generateURI(tmpFile.toString(), pig.getPigContext())
+ "' using " + PigStorage.class.getName() + "(':');");
String query = "A = filter A by $0 neq $1;";
log.info(query);
pig.registerQuery(query);
Iterator<Tuple> it = pig.openIterator("A");
tmpFile.delete();
int count = 0;
while(it.hasNext()) {
Tuple t = it.next();
String first = t.get(0).toString();
String second = t.get(1).toString();
assertFalse(first.equals(second));
count++;
}
assertEquals(expectedCount, count);
}
@Test
public void testStringGt() throws Throwable {
File tmpFile = File.createTempFile("test", "txt");
PrintStream ps = new PrintStream(new FileOutputStream(tmpFile));
int expectedCount = 0;
for(int i = 0; i < LOOP_COUNT; i++) {
if(i % 5 == 0) {
ps.println("b:a");
expectedCount++;
} else {
ps.println("a:b");
// test with nulls
ps.println("a:");
ps.println(":b");
ps.println(":");
}
}
ps.close();
pig.registerQuery("A=load '"
+ Util.generateURI(tmpFile.toString(), pig.getPigContext())
+ "' using " + PigStorage.class.getName() + "(':');");
String query = "A = filter A by $0 gt $1;";
log.info(query);
pig.registerQuery(query);
Iterator<Tuple> it = pig.openIterator("A");
tmpFile.delete();
int count = 0;
while(it.hasNext()) {
Tuple t = it.next();
String first = t.get(0).toString();
String second = t.get(1).toString();
assertTrue(first.compareTo(second) > 0);
count++;
}
assertEquals(expectedCount, count);
}
@Test
public void testStringGte() throws Throwable {
File tmpFile = File.createTempFile("test", "txt");
PrintStream ps = new PrintStream(new FileOutputStream(tmpFile));
int expectedCount = 0;
for(int i = 0; i < LOOP_COUNT; i++) {
if(i % 5 == 0) {
ps.println("b:a");
expectedCount++;
}else if(i % 3 == 0) {
ps.println("b:b");
expectedCount++;
} else {
ps.println("a:b");
// test with nulls
ps.println("a:");
ps.println(":b");
ps.println(":");
}
}
ps.close();
pig.registerQuery("A=load '"
+ Util.generateURI(tmpFile.toString(), pig.getPigContext())
+ "' using " + PigStorage.class.getName() + "(':');");
String query = "A = filter A by $0 gte $1;";
log.info(query);
pig.registerQuery(query);
Iterator<Tuple> it = pig.openIterator("A");
tmpFile.delete();
int count = 0;
while(it.hasNext()) {
Tuple t = it.next();
String first = t.get(0).toString();
String second = t.get(1).toString();
assertTrue(first.compareTo(second) >= 0);
count++;
}
assertEquals(expectedCount, count);
}
@Test
public void testStringLt() throws Throwable {
File tmpFile = File.createTempFile("test", "txt");
PrintStream ps = new PrintStream(new FileOutputStream(tmpFile));
int expectedCount = 0;
for(int i = 0; i < LOOP_COUNT; i++) {
if(i % 5 == 0) {
ps.println("b:a");
// test with nulls
ps.println("a:");
ps.println(":b");
ps.println(":");
} else {
ps.println("a:b");
expectedCount++;
}
}
ps.close();
pig.registerQuery("A=load '"
+ Util.generateURI(tmpFile.toString(), pig.getPigContext())
+ "' using " + PigStorage.class.getName() + "(':');");
String query = "A = filter A by $0 lt $1;";
log.info(query);
pig.registerQuery(query);
Iterator<Tuple> it = pig.openIterator("A");
tmpFile.delete();
int count = 0;
while(it.hasNext()) {
Tuple t = it.next();
String first = t.get(0).toString();
String second = t.get(1).toString();
assertTrue(first.compareTo(second) < 0);
count++;
}
assertEquals(expectedCount, count);
}
@Test
public void testStringLte() throws Throwable {
File tmpFile = File.createTempFile("test", "txt");
PrintStream ps = new PrintStream(new FileOutputStream(tmpFile));
int expectedCount = 0;
for(int i = 0; i < LOOP_COUNT; i++) {
if(i % 5 == 0) {
ps.println("b:a");
// test with nulls
ps.println("a:");
ps.println(":b");
ps.println(":");
}else if(i % 3 == 0) {
ps.println("b:b");
expectedCount++;
} else {
ps.println("a:b");
expectedCount++;
}
}
ps.close();
pig.registerQuery("A=load '"
+ Util.generateURI(tmpFile.toString(), pig.getPigContext())
+ "' using " + PigStorage.class.getName() + "(':');");
String query = "A = filter A by $0 lte $1;";
log.info(query);
pig.registerQuery(query);
Iterator<Tuple> it = pig.openIterator("A");
tmpFile.delete();
int count = 0;
while(it.hasNext()) {
Tuple t = it.next();
String first = t.get(0).toString();
String second = t.get(1).toString();
assertTrue(first.compareTo(second) <= 0);
count++;
}
assertEquals(expectedCount, count);
}
}