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/**
* Copyright (C) FuseSource, Inc.
* http://fusesource.com
*
* 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 org.fusesource.common.util;
import java.util.Map;
/**
* Some helper methods for working with maps
*/
public class Maps {
/**
* Copies the entries for the given keys form the input map to the output map
*/
public static void putAll(Map output, Map input, K... keys) {
for (K key : keys) {
V value = input.get(key);
if (value != null) {
output.put(key, value);
}
}
}
}