| /* |
| * Copyright 2001-2004 The Apache Software Foundation. |
| * |
| * 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.apache.axis.session; |
| |
| import java.util.Enumeration; |
| import java.util.Hashtable; |
| |
| /** |
| * A trivial session implementation. |
| * |
| * @author Glen Daniels (gdaniels@apache.org) |
| */ |
| public class SimpleSession implements Session |
| { |
| private Hashtable rep = null; |
| |
| /** Inactivity timeout (in seconds). |
| * Not used yet. |
| */ |
| private int timeout = -1; |
| private long lastTouched; |
| |
| /** |
| * Default constructor - set lastTouched to now |
| */ |
| public SimpleSession() |
| { |
| lastTouched = System.currentTimeMillis(); |
| } |
| |
| /** Get a property from the session |
| * |
| * @param key the name of the property desired. |
| */ |
| public Object get(String key) |
| { |
| if (rep == null) |
| return null; |
| lastTouched = System.currentTimeMillis(); |
| return rep.get(key); |
| } |
| |
| /** Set a property in the session |
| * |
| * @param key the name of the property to set. |
| * @param value the value of the property. |
| */ |
| public void set(String key, Object value) |
| { |
| synchronized (this) { |
| if (rep == null) |
| rep = new Hashtable(); |
| } |
| lastTouched = System.currentTimeMillis(); |
| rep.put(key, value); |
| } |
| |
| /** Remove a property from the session |
| * |
| * @param key the name of the property desired. |
| */ |
| public void remove(String key) |
| { |
| if (rep != null) |
| rep.remove(key); |
| lastTouched = System.currentTimeMillis(); |
| } |
| |
| /** |
| * Get an enumeration of the keys in this session |
| */ |
| public Enumeration getKeys() { |
| if (rep != null) |
| return rep.keys(); |
| return null; |
| } |
| |
| /** Set the session's time-to-live. |
| * |
| * This is implementation-specific, but basically should be the # |
| * of seconds of inactivity which will cause the session to time |
| * out and invalidate. "inactivity" is implementation-specific. |
| */ |
| public void setTimeout(int timeout) |
| { |
| this.timeout = timeout; |
| } |
| |
| public int getTimeout() |
| { |
| return timeout; |
| } |
| |
| /** |
| * "Touch" the session (mark it recently used) |
| */ |
| public void touch() { |
| lastTouched = System.currentTimeMillis(); |
| } |
| |
| /** |
| * invalidate the session |
| */ |
| public void invalidate() { |
| rep = null; |
| lastTouched = System.currentTimeMillis(); |
| timeout = -1; |
| } |
| |
| public long getLastAccessTime() |
| { |
| return lastTouched; |
| } |
| |
| /** |
| * Get an Object suitable for synchronizing the session. This method |
| * exists because different session implementations might provide |
| * different ways of getting at shared data. For a simple hashtable- |
| * based session, this would just be the hashtable, but for sessions |
| * which use database connections, etc. it might be an object wrapping |
| * a table ID or somesuch. |
| */ |
| public synchronized Object getLockObject() { |
| if (rep == null) { |
| rep = new Hashtable(); |
| } |
| return rep; |
| } |
| } |