org.apache.hadoop.hive.serde2.objectinspector.UnionObjectInspector Maven / Gradle / Ivy
/**
* 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.objectinspector;
import java.util.List;
/**
* UnionObjectInspector works on union data that is stored as UnionObject.
*
* It holds the list of the object inspectors corresponding to each type of the
* object the Union can hold.
*
* UnionObjectInspector.
*
*/
public interface UnionObjectInspector extends ObjectInspector {
/**
* Returns the array of ObjectInspectors that are for each of the tags.
*/
List getObjectInspectors();
/**
* Return the tag of the object.
*/
byte getTag(Object o);
/**
* Return the field based on the tag associated with the Object.
*/
Object getField(Object o);
}