| /* |
| * 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.shiro.session.mgt; |
| |
| import org.apache.shiro.session.InvalidSessionException; |
| import org.apache.shiro.session.Session; |
| |
| import java.io.Serializable; |
| import java.util.Collection; |
| import java.util.Date; |
| |
| /** |
| * A DelegatingSession is a client-tier representation of a server side |
| * {@link org.apache.shiro.session.Session Session}. |
| * This implementation is basically a proxy to a server-side {@link NativeSessionManager NativeSessionManager}, |
| * which will return the proper results for each method call. |
| * <p/> |
| * A <tt>DelegatingSession</tt> will cache data when appropriate to avoid a remote method invocation, |
| * only communicating with the server when necessary. |
| * <p/> |
| * Of course, if used in-process with a NativeSessionManager business POJO, as might be the case in a |
| * web-based application where the web classes and server-side business pojos exist in the same |
| * JVM, a remote method call will not be incurred. |
| * |
| * @since 0.1 |
| */ |
| public class DelegatingSession implements Session, Flushable, Serializable { |
| |
| //TODO - complete JavaDoc |
| |
| private final SessionKey key; |
| |
| //cached fields to avoid a server-side method call if out-of-process: |
| private Date startTimestamp = null; |
| private String host = null; |
| |
| /** |
| * Handle to the target NativeSessionManager that will support the delegate calls. |
| */ |
| private final transient NativeSessionManager sessionManager; |
| |
| |
| public DelegatingSession(NativeSessionManager sessionManager, SessionKey key) { |
| if (sessionManager == null) { |
| throw new IllegalArgumentException("sessionManager argument cannot be null."); |
| } |
| if (key == null) { |
| throw new IllegalArgumentException("sessionKey argument cannot be null."); |
| } |
| if (key.getSessionId() == null) { |
| String msg = "The " + DelegatingSession.class.getName() + " implementation requires that the " + |
| "SessionKey argument returns a non-null sessionId to support the " + |
| "Session.getId() invocations."; |
| throw new IllegalArgumentException(msg); |
| } |
| this.sessionManager = sessionManager; |
| this.key = key; |
| } |
| |
| /** |
| * @see org.apache.shiro.session.Session#getId() |
| */ |
| public Serializable getId() { |
| return key.getSessionId(); |
| } |
| |
| /** |
| * @see org.apache.shiro.session.Session#getStartTimestamp() |
| */ |
| public Date getStartTimestamp() { |
| if (startTimestamp == null) { |
| startTimestamp = sessionManager.getStartTimestamp(key); |
| } |
| return startTimestamp; |
| } |
| |
| /** |
| * @see org.apache.shiro.session.Session#getLastAccessTime() |
| */ |
| public Date getLastAccessTime() { |
| //can't cache - only business pojo knows the accurate time: |
| return sessionManager.getLastAccessTime(key); |
| } |
| |
| public long getTimeout() throws InvalidSessionException { |
| return sessionManager.getTimeout(key); |
| } |
| |
| public void setTimeout(long maxIdleTimeInMillis) throws InvalidSessionException { |
| sessionManager.setTimeout(key, maxIdleTimeInMillis); |
| } |
| |
| public String getHost() { |
| if (host == null) { |
| host = sessionManager.getHost(key); |
| } |
| return host; |
| } |
| |
| /** |
| * @see org.apache.shiro.session.Session#touch() |
| */ |
| public void touch() throws InvalidSessionException { |
| sessionManager.touch(key); |
| } |
| |
| /** |
| * @see org.apache.shiro.session.Session#stop() |
| */ |
| public void stop() throws InvalidSessionException { |
| sessionManager.stop(key); |
| } |
| |
| /** |
| * @see org.apache.shiro.session.Session#getAttributeKeys |
| */ |
| public Collection<Object> getAttributeKeys() throws InvalidSessionException { |
| return sessionManager.getAttributeKeys(key); |
| } |
| |
| /** |
| * @see org.apache.shiro.session.Session#getAttribute(Object key) |
| */ |
| public Object getAttribute(Object attributeKey) throws InvalidSessionException { |
| return sessionManager.getAttribute(this.key, attributeKey); |
| } |
| |
| /** |
| * @see Session#setAttribute(Object key, Object value) |
| */ |
| public void setAttribute(Object attributeKey, Object value) throws InvalidSessionException { |
| if (value == null) { |
| removeAttribute(attributeKey); |
| } else { |
| sessionManager.setAttribute(this.key, attributeKey, value); |
| } |
| } |
| |
| /** |
| * @see Session#removeAttribute(Object key) |
| */ |
| public Object removeAttribute(Object attributeKey) throws InvalidSessionException { |
| return sessionManager.removeAttribute(this.key, attributeKey); |
| } |
| |
| /** |
| * If the backing SessionManager is a {@link FlushableSessionManager}, this method calls |
| * sessionManager.{@link FlushableSessionManager#flush(SessionKey) flush(sessionKey)}, otherwise this implementation |
| * does nothing. |
| * |
| * @since 1.3 |
| */ |
| public void flush() { |
| if (sessionManager instanceof FlushableSessionManager) { |
| ((FlushableSessionManager) sessionManager).flush(this.key); |
| } |
| } |
| } |