org.apache.neethi.PolicyRegistryImpl 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.neethi;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
/**
* Provides a default implementation of PolicyRegistry interface.
*/
public class PolicyRegistryImpl implements PolicyRegistry {
private PolicyRegistry parent;
private Map reg = new ConcurrentHashMap();
public PolicyRegistryImpl() {
}
/**
* Constructs a PolicyRegistryImpl with the specified PolicyRegistry
* as it's parent. If it can't lookup a Policy in it's own registry
* then it lookup in the parent and returns the results.
*
* @param parent the Parent of this PolicyRegistry
*/
public PolicyRegistryImpl(PolicyRegistry parent) {
this.parent = parent;
}
public Policy lookup(String key) {
Policy policy = reg.get(key);
if (policy == null && parent != null) {
return parent.lookup(key);
}
return policy;
}
public void register(String key, Policy policy) {
reg.put(key, policy);
}
public void remove(String key) {
reg.remove(key);
}
public void setParent(PolicyRegistry parent) {
this.parent = parent;
}
public PolicyRegistry getParent() {
return parent;
}
}