/*
* 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.block.BlockIterable;
import com.facebook.presto.execution.TaskId;
import com.facebook.presto.operator.AlignmentOperator.AlignmentOperatorFactory;
import com.facebook.presto.spi.ConnectorSession;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
import java.util.List;
import java.util.Locale;
import java.util.concurrent.ExecutorService;
import static com.facebook.presto.block.BlockAssertions.blockIterableBuilder;
import static com.facebook.presto.operator.OperatorAssertion.assertOperatorEquals;
import static com.facebook.presto.operator.PageAssertions.assertPageEquals;
import static com.facebook.presto.operator.RowPageBuilder.rowPageBuilder;
import static com.facebook.presto.operator.RowPagesBuilder.rowPagesBuilder;
import static com.facebook.presto.spi.type.BigintType.BIGINT;
import static com.facebook.presto.spi.type.TimeZoneKey.UTC_KEY;
import static com.facebook.presto.spi.type.VarcharType.VARCHAR;
import static com.facebook.presto.util.Threads.daemonThreadsNamed;
import static java.util.concurrent.Executors.newCachedThreadPool;
import static org.testng.Assert.assertEquals;
@Test(singleThreaded = true)
public class TestAlignmentOperator
{
private ExecutorService executor;
private DriverContext driverContext;
@BeforeMethod
public void setUp()
{
executor = newCachedThreadPool(daemonThreadsNamed("test"));
ConnectorSession session = new ConnectorSession("user", "source", "catalog", "schema", UTC_KEY, Locale.ENGLISH, "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 testAlignment()
throws Exception
{
Operator operator = createAlignmentOperator();
List<Page> expected = rowPagesBuilder(VARCHAR, BIGINT)
.row("alice", 0)
.row("bob", 1)
.row("charlie", 2)
.row("dave", 3)
.pageBreak()
.row("alice", 4)
.row("bob", 5)
.row("charlie", 6)
.row("dave", 7)
.pageBreak()
.row("alice", 8)
.row("bob", 9)
.row("charlie", 10)
.row("dave", 11)
.build();
assertOperatorEquals(operator, expected);
}
@Test
public void testFinish()
throws Exception
{
Operator operator = createAlignmentOperator();
// verify initial state
assertEquals(operator.isFinished(), false);
assertEquals(operator.needsInput(), false);
// read first page
assertPageEquals(operator.getOutput(), rowPageBuilder(VARCHAR, BIGINT)
.row("alice", 0)
.row("bob", 1)
.row("charlie", 2)
.row("dave", 3)
.build());
// verify state
assertEquals(operator.isFinished(), false);
assertEquals(operator.needsInput(), false);
// read second page
assertPageEquals(operator.getOutput(), rowPageBuilder(VARCHAR, BIGINT)
.row("alice", 4)
.row("bob", 5)
.row("charlie", 6)
.row("dave", 7)
.build());
// verify state
assertEquals(operator.isFinished(), false);
assertEquals(operator.needsInput(), false);
// finish
operator.finish();
// verify state
assertEquals(operator.isFinished(), true);
assertEquals(operator.needsInput(), false);
assertEquals(operator.getOutput(), null);
}
private Operator createAlignmentOperator()
{
BlockIterable channel0 = blockIterableBuilder(VARCHAR)
.append("alice")
.append("bob")
.append("charlie")
.append("dave")
.newBlock()
.append("alice")
.append("bob")
.append("charlie")
.append("dave")
.newBlock()
.append("alice")
.append("bob")
.append("charlie")
.append("dave")
.build();
BlockIterable channel1 = blockIterableBuilder(BIGINT)
.append(0)
.append(1)
.append(2)
.append(3)
.append(4)
.append(5)
.append(6)
.append(7)
.append(8)
.append(9)
.append(10)
.append(11)
.build();
return new AlignmentOperatorFactory(0, channel0, channel1).createOperator(driverContext);
}
}