/*
* 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.hive.parquet.reader;
import com.facebook.presto.spi.block.BlockBuilder;
import com.facebook.presto.spi.type.DecimalType;
import com.facebook.presto.spi.type.Type;
import org.apache.hadoop.hive.common.type.HiveDecimal;
import org.apache.hadoop.hive.serde2.io.HiveDecimalWritable;
import parquet.column.ColumnDescriptor;
import static com.facebook.presto.hive.util.DecimalUtils.getShortDecimalValue;
import static parquet.schema.PrimitiveType.PrimitiveTypeName.INT32;
import static parquet.schema.PrimitiveType.PrimitiveTypeName.INT64;
public class ParquetShortDecimalColumnReader
extends ParquetColumnReader
{
ParquetShortDecimalColumnReader(ColumnDescriptor descriptor)
{
super(descriptor);
}
@Override
protected void readValue(BlockBuilder blockBuilder, Type type)
{
if (definitionLevel == columnDescriptor.getMaxDefinitionLevel()) {
long decimalValue;
if (columnDescriptor.getType().equals(INT32)) {
HiveDecimalWritable hiveDecimalWritable = new HiveDecimalWritable(HiveDecimal.create(valuesReader.readInteger()));
decimalValue = getShortDecimalValue(hiveDecimalWritable, ((DecimalType) type).getScale());
}
else if (columnDescriptor.getType().equals(INT64)) {
HiveDecimalWritable hiveDecimalWritable = new HiveDecimalWritable(HiveDecimal.create(valuesReader.readLong()));
decimalValue = getShortDecimalValue(hiveDecimalWritable, ((DecimalType) type).getScale());
}
else {
decimalValue = getShortDecimalValue(valuesReader.readBytes().getBytes());
}
type.writeLong(blockBuilder, decimalValue);
}
else {
blockBuilder.appendNull();
}
}
@Override
protected void skipValue()
{
if (definitionLevel == columnDescriptor.getMaxDefinitionLevel()) {
valuesReader.readBytes();
}
}
}