/*
* 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.raptor;
import com.facebook.presto.spi.Page;
import com.facebook.presto.spi.block.Block;
import com.facebook.presto.spi.type.Type;
import com.google.common.collect.ImmutableList;
import org.testng.annotations.Test;
import java.util.ArrayList;
import java.util.List;
import static com.facebook.presto.block.BlockAssertions.createLongSequenceBlock;
import static com.facebook.presto.block.BlockAssertions.createStringsBlock;
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.VarcharType.VARCHAR;
import static org.testng.Assert.assertEquals;
public class TestRaptorPageSource
{
private static final ImmutableList<Type> TYPES = ImmutableList.<Type>of(VARCHAR, BIGINT);
@Test
public void testAlignment()
throws Exception
{
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();
RaptorPageSource raptorDataSource = createRaptorDataSource();
List<Page> actual = new ArrayList<>();
while (!raptorDataSource.isFinished()) {
Page nextPage = raptorDataSource.getNextPage();
if (nextPage != null) {
actual.add(nextPage);
}
}
assertEquals(actual.size(), expected.size());
for (int i = 0; i < actual.size(); i++) {
assertPageEquals(TYPES, actual.get(i), expected.get(i));
}
}
@Test
public void testFinish()
throws Exception
{
RaptorPageSource raptorDataSource = createRaptorDataSource();
// verify initial state
assertEquals(raptorDataSource.isFinished(), false);
// read first page
assertPageEquals(TYPES, raptorDataSource.getNextPage(), rowPageBuilder(TYPES)
.row("alice", 0)
.row("bob", 1)
.row("charlie", 2)
.row("dave", 3)
.build());
// verify state
assertEquals(raptorDataSource.isFinished(), false);
// read second page
assertPageEquals(TYPES, raptorDataSource.getNextPage(), rowPageBuilder(TYPES)
.row("alice", 4)
.row("bob", 5)
.row("charlie", 6)
.row("dave", 7)
.build());
// verify state
assertEquals(raptorDataSource.isFinished(), false);
// finish
raptorDataSource.close();
// verify state
assertEquals(raptorDataSource.isFinished(), true);
assertEquals(raptorDataSource.getNextPage(), null);
}
private static RaptorPageSource createRaptorDataSource()
{
Iterable<Block> channel0 = ImmutableList.of(
createStringsBlock("alice", "bob", "charlie", "dave"),
createStringsBlock("alice", "bob", "charlie", "dave"),
createStringsBlock("alice", "bob", "charlie", "dave"));
Iterable<Block> channel1 = ImmutableList.of(createLongSequenceBlock(0, 12));
return new RaptorPageSource(ImmutableList.of(channel0, channel1));
}
}