/**
* 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.lazy;
import java.nio.charset.CharacterCodingException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hive.common.type.HiveDecimal;
import org.apache.hadoop.hive.serde2.io.HiveDecimalWritable;
import org.apache.hadoop.hive.serde2.lazy.objectinspector.primitive.LazyHiveDecimalObjectInspector;
import org.apache.hadoop.hive.serde2.typeinfo.DecimalTypeInfo;
import org.apache.hadoop.hive.serde2.typeinfo.HiveDecimalUtils;
import org.apache.hadoop.io.Text;
public class LazyHiveDecimal extends LazyPrimitive<LazyHiveDecimalObjectInspector, HiveDecimalWritable> {
static final private Log LOG = LogFactory.getLog(LazyHiveDecimal.class);
private final int precision;
private final int scale;
public LazyHiveDecimal(LazyHiveDecimalObjectInspector oi) {
super(oi);
DecimalTypeInfo typeInfo = (DecimalTypeInfo)oi.getTypeInfo();
if (typeInfo == null) {
throw new RuntimeException("Decimal type used without type params");
}
precision = typeInfo.precision();
scale = typeInfo.scale();
data = new HiveDecimalWritable();
}
public LazyHiveDecimal(LazyHiveDecimal copy) {
super(copy);
precision = copy.precision;
scale = copy.scale;
data = new HiveDecimalWritable(copy.data);
}
/**
* Initilizes LazyHiveDecimal object by interpreting the input bytes
* as a numeric string
*
* @param bytes
* @param start
* @param length
*/
@Override
public void init(ByteArrayRef bytes, int start, int length) {
String byteData = null;
try {
byteData = Text.decode(bytes.getData(), start, length);
} catch (CharacterCodingException e) {
isNull = true;
LOG.debug("Data not in the HiveDecimal data type range so converted to null.", e);
return;
}
HiveDecimal dec = HiveDecimal.create(byteData);
dec = enforcePrecisionScale(dec);
if (dec != null) {
data.set(dec);
isNull = false;
} else {
LOG.debug("Data not in the HiveDecimal data type range so converted to null. Given data is :"
+ byteData);
isNull = true;
}
}
private HiveDecimal enforcePrecisionScale(HiveDecimal dec) {
return HiveDecimalUtils.enforcePrecisionScale(dec, precision, scale);
}
@Override
public HiveDecimalWritable getWritableObject() {
return data;
}
}