/**
* Copyright 2011-2014 Asakusa Framework Team.
*
* 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.asakusafw.directio.hive.serde;
import java.math.BigDecimal;
import org.apache.hadoop.hive.common.type.HiveDecimal;
import org.apache.hadoop.hive.serde2.io.HiveDecimalWritable;
import org.apache.hadoop.hive.serde2.objectinspector.primitive.HiveDecimalObjectInspector;
import org.apache.hadoop.hive.serde2.typeinfo.DecimalTypeInfo;
import org.apache.hadoop.hive.serde2.typeinfo.HiveDecimalUtils;
import org.apache.hadoop.hive.serde2.typeinfo.TypeInfoFactory;
import com.asakusafw.runtime.value.DecimalOption;
import com.asakusafw.runtime.value.ValueOption;
/**
* Inspects {@link DecimalOption} object.
* @since 0.7.0
*/
public class DecimalOptionInspector extends AbstractValueInspector implements HiveDecimalObjectInspector {
/**
* Creates a new instance.
*/
public DecimalOptionInspector() {
super(TypeInfoFactory.decimalTypeInfo);
}
/**
* Creates a new instance.
* @param precision the decimal precision
* @param scale the decimal scale
*/
public DecimalOptionInspector(int precision, int scale) {
super(TypeInfoFactory.getDecimalTypeInfo(precision, scale));
}
@Override
protected ValueOption<?> newObject() {
return new DecimalOption();
}
@Override
public HiveDecimal getPrimitiveJavaObject(Object o) {
DecimalOption object = (DecimalOption) o;
if (object == null || object.isNull()) {
return null;
}
return convert(object.get());
}
@Override
public HiveDecimalWritable getPrimitiveWritableObject(Object o) {
HiveDecimal value = getPrimitiveJavaObject(o);
if (value == null) {
return null;
}
return new HiveDecimalWritable(value);
}
private HiveDecimal convert(BigDecimal value) {
return HiveDecimalUtils.enforcePrecisionScale(HiveDecimal.create(value), (DecimalTypeInfo) typeInfo);
}
}