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PageRenderer enhancements. Test 'page' instance, test page 'template' and test page 'ui components'.

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git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@8133 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
This commit is contained in:
Kevin Roast
2008-01-30 17:18:37 +00:00
parent e1abbcc7a4
commit 06541ab85a
1 changed files with 0 additions and 95 deletions
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95
source/java/org/alfresco/repo/cache/ExpiringValueCache.java vendored
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/*
* Copyright (C) 2005-2007 Alfresco Software Limited.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* As a special exception to the terms and conditions of version 2.0 of
* the GPL, you may redistribute this Program in connection with Free/Libre
* and Open Source Software ("FLOSS") applications as described in Alfresco's
* FLOSS exception. You should have recieved a copy of the text describing
* the FLOSS exception, and it is also available here:
* http://www.alfresco.com/legal/licensing"
*/
package org.alfresco.repo.cache;
/**
* Simple cache of a single Object value.
* <p>
* The object placed in the cache will automatically be discarded after a timeout value.
*
* @author Kevin Roast
*/
public class ExpiringValueCache<T>
{
// default is to discard cached object after 1 minute
private final static long TIMEOUT_DEFAULT = 1000L*60L;
private long timeout = TIMEOUT_DEFAULT;
private long snapshot = 0;
private T value;
/**
* Default constructor.
*
* Uses the default timeout of 1 minute.
*/
public ExpiringValueCache()
{
}
/**
* Constructor
*
* @param timeout Timeout in milliseconds before cached value is discarded
*/
public ExpiringValueCache(long timeout)
{
this.timeout = timeout;
}
/**
* Put a value into the cache. The item will be return from the associated get() method
* until the timeout expires then null will be returned.
*
* @param value The object to store in the cache
*/
public void put(T value)
{
this.value = value;
this.snapshot = System.currentTimeMillis();
}
/**
* Get the cached object. The set item will be returned until it expires, then null will be returned.
*
* @return cached object or null if not set or expired.
*/
public T get()
{
if (snapshot + timeout < System.currentTimeMillis())
{
this.value = null;
}
return this.value;
}
/**
* Clear the cache value
*/
public void clear()
{
this.value = null;
}
}