/**
* 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.typeinfo;
import java.io.Serializable;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector.Category;
/**
* A Map Type has homogeneous keys and homogeneous values. All keys of the Map
* have the same TypeInfo, which is returned by getMapKeyTypeInfo(); and all
* values of the Map has the same TypeInfo, which is returned by
* getMapValueTypeInfo().
*
* Always use the TypeInfoFactory to create new TypeInfo objects, instead of
* directly creating an instance of this class.
*/
public final class MapTypeInfo extends TypeInfo implements Serializable {
private static final long serialVersionUID = 1L;
private TypeInfo mapKeyTypeInfo;
private TypeInfo mapValueTypeInfo;
/**
* For java serialization use only.
*/
public MapTypeInfo() {
}
@Override
public String getTypeName() {
return org.apache.hadoop.hive.serde.serdeConstants.MAP_TYPE_NAME + "<"
+ mapKeyTypeInfo.getTypeName() + "," + mapValueTypeInfo.getTypeName()
+ ">";
}
/**
* For java serialization use only.
*/
public void setMapKeyTypeInfo(TypeInfo mapKeyTypeInfo) {
this.mapKeyTypeInfo = mapKeyTypeInfo;
}
/**
* For java serialization use only.
*/
public void setMapValueTypeInfo(TypeInfo mapValueTypeInfo) {
this.mapValueTypeInfo = mapValueTypeInfo;
}
// For TypeInfoFactory use only
MapTypeInfo(TypeInfo keyTypeInfo, TypeInfo valueTypeInfo) {
mapKeyTypeInfo = keyTypeInfo;
mapValueTypeInfo = valueTypeInfo;
}
@Override
public Category getCategory() {
return Category.MAP;
}
public TypeInfo getMapKeyTypeInfo() {
return mapKeyTypeInfo;
}
public TypeInfo getMapValueTypeInfo() {
return mapValueTypeInfo;
}
@Override
public boolean equals(Object other) {
if (this == other) {
return true;
}
if (!(other instanceof MapTypeInfo)) {
return false;
}
MapTypeInfo o = (MapTypeInfo) other;
return o.getMapKeyTypeInfo().equals(getMapKeyTypeInfo())
&& o.getMapValueTypeInfo().equals(getMapValueTypeInfo());
}
@Override
public int hashCode() {
return mapKeyTypeInfo.hashCode() ^ mapValueTypeInfo.hashCode();
}
}