TestShortDecimalStream.java
/*
* 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.orc.stream;
import com.facebook.presto.common.type.Decimals;
import com.facebook.presto.orc.OrcCorruptionException;
import com.facebook.presto.orc.TestingHiveOrcAggregatedMemoryContext;
import com.facebook.presto.orc.checkpoint.DecimalStreamCheckpoint;
import io.airlift.slice.Slice;
import org.testng.annotations.Test;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Optional;
import java.util.Random;
public class TestShortDecimalStream
extends AbstractTestValueStream<Long, DecimalStreamCheckpoint, DecimalOutputStream, DecimalInputStream>
{
@Test
public void test()
throws IOException
{
Random random = new Random(0);
List<List<Long>> groups = new ArrayList<>();
for (int groupIndex = 0; groupIndex < 3; groupIndex++) {
List<Long> group = new ArrayList<>();
for (int i = 0; i < 1000; i++) {
long value = random.nextLong();
group.add(value);
}
groups.add(group);
}
testWriteValue(groups);
}
@Override
protected DecimalOutputStream createValueOutputStream()
{
return new DecimalOutputStream(getColumnWriterOptions());
}
@Override
protected void writeValue(DecimalOutputStream outputStream, Long value)
{
outputStream.writeUnscaledValue(Decimals.encodeUnscaledValue(value));
}
@Override
protected DecimalInputStream createValueStream(Slice slice)
throws OrcCorruptionException
{
TestingHiveOrcAggregatedMemoryContext aggregatedMemoryContext = new TestingHiveOrcAggregatedMemoryContext();
OrcInputStream input = new OrcInputStream(
ORC_DATA_SOURCE_ID,
new SharedBuffer(aggregatedMemoryContext.newOrcLocalMemoryContext("sharedDecompressionBuffer")),
slice.getInput(),
getOrcDecompressor(),
Optional.empty(),
aggregatedMemoryContext,
slice.getRetainedSize());
return new DecimalInputStream(input);
}
@Override
protected Long readValue(DecimalInputStream valueStream)
throws IOException
{
return valueStream.nextLong();
}
}