/*
* Licensed 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 com.facebook.presto.operator;
import com.facebook.presto.execution.TaskId;
import com.facebook.presto.spi.InMemoryRecordSet;
import com.facebook.presto.sql.analyzer.Session;
import com.facebook.presto.util.InfiniteRecordSet;
import com.facebook.presto.util.MaterializedResult;
import com.google.common.collect.ImmutableList;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
import java.util.List;
import java.util.concurrent.ExecutorService;
import static com.facebook.presto.spi.ColumnType.LONG;
import static com.facebook.presto.spi.ColumnType.STRING;
import static com.facebook.presto.tuple.TupleInfo.Type.FIXED_INT_64;
import static com.facebook.presto.tuple.TupleInfo.Type.VARIABLE_BINARY;
import static com.facebook.presto.util.MaterializedResult.resultBuilder;
import static com.facebook.presto.util.Threads.daemonThreadsNamed;
import static java.util.concurrent.Executors.newCachedThreadPool;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertNotNull;
import static org.testng.Assert.assertNull;
public class TestRecordProjectOperator
{
private ExecutorService executor;
private DriverContext driverContext;
@BeforeMethod
public void setUp()
{
executor = newCachedThreadPool(daemonThreadsNamed("test"));
Session session = new Session("user", "source", "catalog", "schema", "address", "agent");
driverContext = new TaskContext(new TaskId("query", "stage", "task"), executor, session)
.addPipelineContext(true, true)
.addDriverContext();
}
@AfterMethod
public void tearDown()
{
executor.shutdownNow();
}
@Test
public void testSingleColumn()
throws Exception
{
InMemoryRecordSet records = new InMemoryRecordSet(ImmutableList.of(STRING), ImmutableList.copyOf(new List<?>[] {ImmutableList.of("abc"), ImmutableList.of("def"),
ImmutableList.of("g")}));
OperatorContext operatorContext = driverContext.addOperatorContext(0, RecordProjectOperator.class.getSimpleName());
Operator operator = new RecordProjectOperator(operatorContext, records);
MaterializedResult expected = resultBuilder(VARIABLE_BINARY)
.row("abc")
.row("def")
.row("g")
.build();
OperatorAssertion.assertOperatorEquals(operator, expected);
}
@Test
public void testMultiColumn()
throws Exception
{
InMemoryRecordSet records = new InMemoryRecordSet(ImmutableList.of(STRING, LONG), ImmutableList.copyOf(new List<?>[] {ImmutableList.of("abc", 1L),
ImmutableList.of("def", 2L),
ImmutableList.of("g", 0L)}));
OperatorContext operatorContext = driverContext.addOperatorContext(0, RecordProjectOperator.class.getSimpleName());
Operator operator = new RecordProjectOperator(operatorContext, records);
MaterializedResult expected = resultBuilder(VARIABLE_BINARY, FIXED_INT_64)
.row("abc", 1)
.row("def", 2)
.row("g", 0)
.build();
OperatorAssertion.assertOperatorEquals(operator, expected);
}
@Test
public void testFinish()
throws Exception
{
InfiniteRecordSet records = new InfiniteRecordSet(ImmutableList.of(STRING, LONG), ImmutableList.of("abc", 1L));
OperatorContext operatorContext = driverContext.addOperatorContext(0, RecordProjectOperator.class.getSimpleName());
Operator operator = new RecordProjectOperator(operatorContext, records);
// verify initial state
assertEquals(operator.isFinished(), false);
assertEquals(operator.needsInput(), false);
// first read will be null due to buffering
assertNull(operator.getOutput());
// read first page
Page page = null;
for (int i = 0; i < 100; i++) {
page = operator.getOutput();
if (page != null) {
break;
}
}
assertNotNull(page);
// verify state
assertEquals(operator.isFinished(), false);
assertEquals(operator.needsInput(), false);
// start second page... will be null due to buffering
assertNull(operator.getOutput());
// verify state
assertEquals(operator.isFinished(), false);
assertEquals(operator.needsInput(), false);
// finish
operator.finish();
// verify state
assertEquals(operator.isFinished(), false);
assertEquals(operator.needsInput(), false);
// read the buffered page
assertNotNull(operator.getOutput());
// verify state
assertEquals(operator.isFinished(), true);
assertEquals(operator.needsInput(), false);
assertEquals(operator.getOutput(), null);
}
}