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//
// ========================================================================
// Copyright (c) 1995-2015 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.server.session;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.servlet.http.HttpServletRequest;
/**
* MemSession
*
* A session whose data is kept in memory
*/
public class MemSession extends AbstractSession
{
private final Map<String,Object> _attributes=new HashMap<String, Object>();
protected MemSession(AbstractSessionManager abstractSessionManager, HttpServletRequest request)
{
super(abstractSessionManager, request);
}
public MemSession(AbstractSessionManager abstractSessionManager, long created, long accessed, String clusterId)
{
super(abstractSessionManager, created, accessed, clusterId);
}
/* ------------------------------------------------------------- */
@Override
public Map<String,Object> getAttributeMap()
{
return _attributes;
}
/* ------------------------------------------------------------ */
@Override
public int getAttributes()
{
synchronized (this)
{
checkValid();
return _attributes.size();
}
}
/* ------------------------------------------------------------ */
@SuppressWarnings({ "unchecked" })
@Override
public Enumeration<String> doGetAttributeNames()
{
List<String> names=_attributes==null?Collections.EMPTY_LIST:new ArrayList<String>(_attributes.keySet());
return Collections.enumeration(names);
}
/* ------------------------------------------------------------ */
@Override
public Set<String> getNames()
{
synchronized (this)
{
return new HashSet<String>(_attributes.keySet());
}
}
/* ------------------------------------------------------------- */
@Override
public void clearAttributes()
{
while (_attributes!=null && _attributes.size()>0)
{
ArrayList<String> keys;
synchronized(this)
{
keys=new ArrayList<String>(_attributes.keySet());
}
Iterator<String> iter=keys.iterator();
while (iter.hasNext())
{
String key=(String)iter.next();
Object value;
synchronized(this)
{
value=doPutOrRemove(key,null);
}
unbindValue(key,value);
((AbstractSessionManager)getSessionManager()).doSessionAttributeListeners(this,key,value,null);
}
}
if (_attributes!=null)
_attributes.clear();
}
/* ------------------------------------------------------------ */
public void addAttributes(Map<String,Object> map)
{
_attributes.putAll(map);
}
/* ------------------------------------------------------------ */
@Override
public Object doPutOrRemove(String name, Object value)
{
return value==null?_attributes.remove(name):_attributes.put(name,value);
}
/* ------------------------------------------------------------ */
@Override
public Object doGet(String name)
{
return _attributes.get(name);
}
}
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