org.apache.hadoop.hive.serde2.objectinspector.StandardListObjectInspector 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.ArrayList;
import java.util.List;
/**
* DefaultListObjectInspector works on list data that is stored as a Java List
* or Java Array object.
*
* Always use the ObjectInspectorFactory to create new ObjectInspector objects,
* instead of directly creating an instance of this class.
*/
public class StandardListObjectInspector implements SettableListObjectInspector {
ObjectInspector listElementObjectInspector;
/**
* Call ObjectInspectorFactory.getStandardListObjectInspector instead.
*/
protected StandardListObjectInspector(
ObjectInspector listElementObjectInspector) {
this.listElementObjectInspector = listElementObjectInspector;
}
public final Category getCategory() {
return Category.LIST;
}
// without data
public ObjectInspector getListElementObjectInspector() {
return listElementObjectInspector;
}
// with data
public Object getListElement(Object data, int index) {
if (data == null) {
return null;
}
// We support both List