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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.assertNull;
import java.io.File;
import java.util.Iterator;
import java.util.Properties;
import java.util.Random;
import org.apache.pig.ExecType;
import org.apache.pig.PigServer;
import org.apache.pig.backend.executionengine.ExecException;
import org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.PONegative;
import org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POProject;
import org.apache.pig.backend.hadoop.executionengine.physicalLayer.plans.PhysicalPlan;
import org.apache.pig.data.BagFactory;
import org.apache.pig.data.DataBag;
import org.apache.pig.data.DataType;
import org.apache.pig.data.Tuple;
import org.apache.pig.data.TupleFactory;
import org.apache.pig.impl.plan.OperatorKey;
import org.apache.pig.impl.plan.PlanException;
import org.junit.Test;
public class TestPONegative {
DataBag bag = BagFactory.getInstance().newDefaultBag();
Random r = new Random(100L);
TupleFactory tf = TupleFactory.getInstance();
final int MAX = 10;
@Test
public void testPONegInt () throws PlanException, ExecException {
for(int i = 0; i < MAX; i++) {
Tuple t = tf.newTuple();
t.append(r.nextInt());
bag.add(t);
}
POProject prj = new POProject(new OperatorKey("", r.nextLong()), -1, 0);
prj.setResultType(DataType.INTEGER);
PONegative pn = new PONegative(new OperatorKey("", r.nextLong()), -1, prj);
pn.setResultType(DataType.INTEGER);
PhysicalPlan plan = new PhysicalPlan();
plan.add(prj); plan.add(pn);
plan.connect(prj, pn);
for (Tuple t : bag) {
plan.attachInput(t);
Integer expected = -(Integer)t.get(0);
Integer output = (Integer) pn.getNextInteger().result;
assertEquals(expected, output);
}
}
@Test
public void testPONegIntAndNull () throws PlanException, ExecException {
for(int i = 0; i < MAX; i++) {
Tuple t = tf.newTuple();
t.append(r.nextInt());
bag.add(t);
if( r.nextInt(3) % 3 == 0 ){
t = tf.newTuple();
t.append(null);
bag.add(t);
}
}
POProject prj = new POProject(new OperatorKey("", r.nextLong()), -1, 0);
prj.setResultType(DataType.INTEGER);
PONegative pn = new PONegative(new OperatorKey("", r.nextLong()), -1, prj);
pn.setResultType(DataType.INTEGER);
PhysicalPlan plan = new PhysicalPlan();
plan.add(prj); plan.add(pn);
plan.connect(prj, pn);
for (Tuple t : bag) {
plan.attachInput(t);
if(t.get(0) == null) {
Integer output = (Integer)pn.getNextInteger().result;
assertNull(output);
} else {
Integer expected = -(Integer)t.get(0);
Integer output = (Integer) pn.getNextInteger().result;
assertEquals(expected, output);
}
}
}
@Test
public void testPONegLong () throws PlanException, ExecException {
for(int i = 0; i < MAX; i++) {
Tuple t = tf.newTuple();
t.append(r.nextLong());
bag.add(t);
}
POProject prj = new POProject(new OperatorKey("", r.nextLong()), -1, 0);
prj.setResultType(DataType.LONG);
PONegative pn = new PONegative(new OperatorKey("", r.nextLong()), -1, prj);
pn.setResultType(DataType.LONG);
PhysicalPlan plan = new PhysicalPlan();
plan.add(prj); plan.add(pn);
plan.connect(prj, pn);
for (Tuple t : bag) {
plan.attachInput(t);
Long expected = -(Long)t.get(0);
long output = (Long) pn.getNextLong().result;
assertEquals(expected.longValue(), output);
}
}
@Test
public void testPONegLongAndNull () throws PlanException, ExecException {
for(int i = 0; i < MAX; i++) {
Tuple t = tf.newTuple();
t.append(r.nextLong());
bag.add(t);
if( r.nextInt(3) % 3 == 0 ){
t = tf.newTuple();
t.append(null);
bag.add(t);
}
}
POProject prj = new POProject(new OperatorKey("", r.nextLong()), -1, 0);
prj.setResultType(DataType.LONG);
PONegative pn = new PONegative(new OperatorKey("", r.nextLong()), -1, prj);
pn.setResultType(DataType.LONG);
PhysicalPlan plan = new PhysicalPlan();
plan.add(prj); plan.add(pn);
plan.connect(prj, pn);
for(Iterator<Tuple> it = bag.iterator(); it.hasNext(); ) {
Tuple t = it.next();
plan.attachInput(t);
if(t.get(0) == null) {
Long output = (Long)pn.getNextLong().result;
assertNull(output);
} else {
Long expected = -(Long)t.get(0);
long output = (Long) pn.getNextLong().result;
assertEquals(expected.longValue(), output);
}
}
}
@Test
public void testPONegDouble() throws PlanException, ExecException {
for(int i = 0; i < MAX; i++) {
Tuple t = tf.newTuple();
t.append(r.nextDouble());
bag.add(t);
}
POProject prj = new POProject(new OperatorKey("", r.nextLong()), -1, 0);
prj.setResultType(DataType.DOUBLE);
PONegative pn = new PONegative(new OperatorKey("", r.nextLong()), -1, prj);
pn.setResultType(DataType.DOUBLE);
PhysicalPlan plan = new PhysicalPlan();
plan.add(prj); plan.add(pn);
plan.connect(prj, pn);
for (Tuple t : bag) {
plan.attachInput(t);
Double expected = -(Double)t.get(0);
Double output = (Double) pn.getNextDouble().result;
assertEquals(expected, output);
}
}
@Test
public void testPONegDoubleAndNull() throws PlanException, ExecException {
for(int i = 0; i < MAX; i++) {
Tuple t = tf.newTuple();
t.append(r.nextDouble());
bag.add(t);
if( r.nextInt(3) % 3 == 0 ){
t = tf.newTuple();
t.append(null);
bag.add(t);
}
}
POProject prj = new POProject(new OperatorKey("", r.nextLong()), -1, 0);
prj.setResultType(DataType.DOUBLE);
PONegative pn = new PONegative(new OperatorKey("", r.nextLong()), -1, prj);
pn.setResultType(DataType.DOUBLE);
PhysicalPlan plan = new PhysicalPlan();
plan.add(prj); plan.add(pn);
plan.connect(prj, pn);
for (Tuple t : bag) {
plan.attachInput(t);
if(t.get(0) == null) {
Double output = (Double )pn.getNextDouble().result;
assertNull(output);
} else {
Double expected = -(Double)t.get(0);
Double output = (Double) pn.getNextDouble().result;
assertEquals(expected, output);
}
}
}
@Test
public void testPONegFloat() throws PlanException, ExecException {
for(int i = 0; i < MAX; i++) {
Tuple t = tf.newTuple();
t.append(r.nextFloat());
bag.add(t);
}
POProject prj = new POProject(new OperatorKey("", r.nextLong()), -1, 0);
prj.setResultType(DataType.FLOAT);
PONegative pn = new PONegative(new OperatorKey("", r.nextLong()), -1, prj);
pn.setResultType(DataType.FLOAT);
PhysicalPlan plan = new PhysicalPlan();
plan.add(prj); plan.add(pn);
plan.connect(prj, pn);
for (Tuple t : bag) {
plan.attachInput(t);
Float expected = -(Float)t.get(0);
Float output = (Float) pn.getNextFloat().result;
assertEquals(expected, output);
}
}
@Test
public void testPONegFloatAndNull() throws PlanException, ExecException {
for(int i = 0; i < MAX; i++) {
Tuple t = tf.newTuple();
t.append(r.nextFloat());
bag.add(t);
if( r.nextInt(3) % 3 == 0 ){
t = tf.newTuple();
t.append(null);
bag.add(t);
}
}
POProject prj = new POProject(new OperatorKey("", r.nextLong()), -1, 0);
prj.setResultType(DataType.FLOAT);
PONegative pn = new PONegative(new OperatorKey("", r.nextLong()), -1, prj);
pn.setResultType(DataType.FLOAT);
PhysicalPlan plan = new PhysicalPlan();
plan.add(prj); plan.add(pn);
plan.connect(prj, pn);
for(Iterator<Tuple> it = bag.iterator(); it.hasNext(); ) {
Tuple t = it.next();
plan.attachInput(t);
if(t.get(0) == null) {
Float output = (Float)pn.getNextFloat().result;
assertNull(output);
} else {
Float expected = -(Float)t.get(0);
Float output = (Float) pn.getNextFloat().result;
assertEquals(expected, output);
}
}
}
@Test
public void testPONegType() throws Exception {
PigServer pig = new PigServer(ExecType.LOCAL, new Properties());
File f = Util.createInputFile("tmp", "", new String[] {"a", "b", "c"});
pig.registerQuery("a = load '"
+ Util.generateURI(f.toString(), pig.getPigContext()) + "';");
// -1 is modeled as POnegative with Constant(1)
pig.registerQuery("b = foreach a generate SIZE(-1);");
Iterator<Tuple> it = pig.openIterator("b");
int i = 0;
while(it.hasNext()) {
assertEquals(1L, it.next().get(0));
i++;
}
assertEquals(3, i);
}
}