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/*
* LeaseMap.java May 2004
*
* Copyright (C) 2004, Niall Gallagher <niallg@users.sf.net>
*
* 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.simpleframework.common.lease;
import java.util.concurrent.ConcurrentHashMap;
/**
* The <code>LeaseMap</code> object is used to map lease keys to the
* lease objects managing those objects. This allows components that
* are using the leasing framework to associate an object with its
* lease and vice versa. Such a capability enables lease renewals to
* be performed without the need for a direct handle on the lease.
*
* @author Niall Gallagher
*/
public class LeaseMap<T> extends ConcurrentHashMap<T, Lease<T>> {
/**
* Constructor for the <code>LeaseMap</code> object. This will
* create a map for mapping leased resource keys to the leases
* that manage them. Having such a map allows leases to be
* maintained without having a direct handle on the lease.
*/
public LeaseMap() {
super();
}
/**
* Constructor for the <code>LeaseMap</code> object. This will
* create a map for mapping leased resource keys to the leases
* that manage them. Having such a map allows leases to be
* maintained without having a direct handle on the lease.
*
* @param capacity this is the initial capacity of the map
*/
public LeaseMap(int capacity) {
super(capacity);
}
/**
* This is used to acquire the <code>Lease</code> object that is
* mapped to the specified key. Overriding this method ensures
* that even without generic parameters a type safe method for
* acquiring the registered lease objects can be used.
*
* @param key this is the key used to acquire the lease object
*
* @return this is the lease that is associated with the key
*/
public Lease<T> get(Object key) {
return super.get(key);
}
/**
* This is used to remove the <code>Lease</code> object that is
* mapped to the specified key. Overriding this method ensures
* that even without generic parameters a type safe method for
* removing the registered lease objects can be used.
*
* @param key this is the key used to remove the lease object
*
* @return this is the lease that is associated with the key
*/
public Lease<T> remove(Object key) {
return super.remove(key);
}
}
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