org.apache.hadoop.hive.serde2.lazybinary.LazyBinaryHiveDecimal Maven / Gradle / Ivy

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.hadoop.hive.serde2.lazybinary;

import org.apache.hadoop.hive.common.type.HiveDecimal;
import org.apache.hadoop.hive.serde2.io.HiveDecimalWritable;
import org.apache.hadoop.hive.serde2.lazy.ByteArrayRef;
import org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableHiveDecimalObjectInspector;
import org.apache.hadoop.hive.serde2.typeinfo.DecimalTypeInfo;

public class LazyBinaryHiveDecimal extends
    LazyBinaryPrimitive {
  private int precision;
  private int scale;

  LazyBinaryHiveDecimal(WritableHiveDecimalObjectInspector oi) {
    super(oi);

    DecimalTypeInfo typeInfo = (DecimalTypeInfo) oi.getTypeInfo();
    this.precision = typeInfo.precision();
    this.scale = typeInfo.scale();
    data = new HiveDecimalWritable();
  }

  LazyBinaryHiveDecimal(LazyBinaryHiveDecimal copy) {
    super(copy);
    data = new HiveDecimalWritable(copy.data);
  }

  @Override
  public void init(ByteArrayRef bytes, int start, int length) {
    LazyBinarySerDe.setFromBigIntegerBytesAndScale(bytes.getData(), start, length, data);
    data.mutateEnforcePrecisionScale(precision, scale);
  }
}