/*
* 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.pig.impl.util;
import java.util.ArrayList;
import java.util.LinkedHashMap;
public class LinkedMultiMap<K,V> extends MultiMap<K,V> {
/** This class simply extends MultiMap to use LinkedHashMap instead of HashMap.
* This ensures while iterating over keys of MultiMap we get keys in
* in same order as they were inserted.
*/
private static final long serialVersionUID = 1L;
public LinkedMultiMap() {
mMap = new LinkedHashMap<K, ArrayList<V>>();
}
/**
* @param size Initial size of the map
*/
public LinkedMultiMap(int size) {
mMap = new LinkedHashMap<K, ArrayList<V>>(size);
}
}