/*
 * 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.
 */
module hunt.shiro.session.mgt.eis.EnterpriseCacheSessionDAO;

// import hunt.shiro.cache.AbstractCacheManager;
// import hunt.shiro.cache.Cache;
// import hunt.shiro.cache.CacheException;
// import hunt.shiro.cache.MapCache;
// import hunt.shiro.session.Session;

// import hunt.util.Common;
// import java.util.concurrent.ConcurrentHashMap;

// /**
//  * SessionDAO implementation that relies on an enterprise caching product as the EIS system of record for all sessions.
//  * It is expected that an injected {@link hunt.shiro.cache.Cache Cache} or
//  * {@link hunt.shiro.cache.CacheManager CacheManager} is backed by an enterprise caching product that can support
//  * all application sessions and/or provide disk paging for resilient data storage.
//  * <h2>Production Note</h2>
//  * This implementation defaults to using an in-memory map-based {@code CacheManager}, which is great for testing but
//  * will typically not scale for production environments and could easily cause {@code OutOfMemoryException}s.  Just
//  * don't forget to configure!(b)*</b> an instance of this class with a production-grade {@code CacheManager} that can
//  * handle disk paging for large numbers of sessions and you'll be fine.
//  * <p/>
//  * <b>*</b>If you configure Shiro's {@code SecurityManager} instance with such a {@code CacheManager}, it will be
//  * automatically applied to an instance of this class and you won't need to explicitly set it in configuration.
//  * <h3>Implementation Details</h3>
//  * This implementation relies heavily on the {@link CachingSessionDAO parent class}'s transparent caching behavior for
//  * all storage operations with the enterprise caching product.  Because the parent class uses a {@code Cache} or
//  * {@code CacheManager} to perform caching, and the cache is considered the system of record, nothing further needs to
//  * be done for the {@link #doReadSession}, {@link #doUpdate} and {@link #doDelete} method implementations.  This class
//  * implements those methods as required by the parent class, but they essentially do nothing.
//  *
//  */
// class EnterpriseCacheSessionDAO : CachingSessionDAO {

//      this() {
//         setCacheManager(new class AbstractCacheManager {
//             override
//             protected Cache!(Serializable, Session) createCache(string name){
//                 return new MapCache!(Serializable, Session)(name, 
//                 new ConcurrentHashMap!(Serializable, Session)());
//             }
//         });
//     }

//     protected Serializable doCreate(Session session) {
//         Serializable sessionId = generateSessionId(session);
//         assignSessionId(session, sessionId);
//         return sessionId;
//     }

//     protected Session doReadSession(Serializable sessionId) {
//         return null; //should never execute because this implementation relies on parent class to access cache, which
//         //is where all sessions reside - it is the cache implementation that determines if the
//         //cache is memory only or disk-persistent, etc.
//     }

//     protected void doUpdate(Session session) {
//         //does nothing - parent class persists to cache.
//     }

//     protected void doDelete(Session session) {
//         //does nothing - parent class removes from cache.
//     }
// }