/**
* 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 org.apache.hadoop.hive.serde2.objectinspector.primitive.AbstractPrimitiveObjectInspector;
import org.apache.hadoop.hive.serde2.typeinfo.PrimitiveTypeInfo;
import com.asakusafw.runtime.value.ValueOption;
/**
* An abstract implementation of {@link AbstractPrimitiveObjectInspector}.
* @since 0.7.0
*/
public abstract class AbstractValueInspector extends AbstractPrimitiveObjectInspector {
/**
* Creates a new instance.
* @param typeInfo the primitive type info
*/
protected AbstractValueInspector(PrimitiveTypeInfo typeInfo) {
super(typeInfo);
}
@Override
public boolean preferWritable() {
return false;
}
@SuppressWarnings({ "rawtypes", "unchecked", "deprecation" })
@Override
public final Object copyObject(Object o) {
ValueOption<?> object = (ValueOption<?>) o;
if (object == null || object.isNull()) {
return null;
}
ValueOption copy = newObject();
copy.copyFrom(object);
return copy;
}
/**
* Creates a new instance for supported {@link ValueOption} type.
* @return the created instance
*/
protected abstract ValueOption<?> newObject();
}