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The private implementation classes of the Apache MyFaces Core JSF-2.3-next Implementation
/*
* 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.myfaces.context.flash;
import java.io.Serializable;
import java.util.Map;
import javax.faces.FacesWrapper;
import javax.faces.context.FacesContext;
import javax.faces.context.Flash;
import org.apache.myfaces.util.lang.LRULinkedHashMap;
/**
*
*/
class ClientWindowFlashTokenLRUMap extends LRULinkedHashMap implements Serializable
{
public ClientWindowFlashTokenLRUMap(int capacity)
{
super(capacity);
}
@Override
protected boolean removeEldestEntry(Map.Entry eldest)
{
FacesContext facesContext = FacesContext.getCurrentInstance();
Flash flash = facesContext.getExternalContext().getFlash();
if (flash != null)
{
ReleasableFlash rf = null;
while (flash != null)
{
if (flash instanceof ReleasableFlash)
{
rf = (ReleasableFlash) flash;
break;
}
if (flash instanceof FacesWrapper)
{
flash = ((FacesWrapper) flash).getWrapped();
}
else
{
flash = null;
}
}
if (rf != null)
{
rf.clearFlashMap(facesContext, (String) eldest.getKey(), (String) eldest.getValue());
}
}
return super.removeEldestEntry(eldest);
}
}