/**
* License Agreement.
*
* Rich Faces - Natural Ajax for Java Server Faces (JSF)
*
* Copyright (C) 2007 Exadel, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.ajax4jsf.cache;
import java.util.AbstractMap;
import java.util.AbstractSet;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import javax.servlet.ServletContext;
/**
* @author Nick Belaevski - nbelaevski@exadel.com
* created 02.05.2007
*
*/
public class ServletContextInitMap extends AbstractMap {
private ServletContext servletContext;
public ServletContextInitMap(ServletContext servletContext) {
super();
this.servletContext = servletContext;
}
public Set entrySet() {
return new AbstractSet() {
public Iterator iterator() {
return new Iterator() {
private Enumeration initNames = servletContext.getInitParameterNames();
public boolean hasNext() {
return initNames.hasMoreElements();
}
public Object next() {
String key = (String) initNames.nextElement();
String value = servletContext.getInitParameter(key);
return new ServletContextInitMapEntry(key, value);
}
public void remove() {
throw new UnsupportedOperationException();
}
};
}
public int size() {
int result = 0;
Enumeration initNames = servletContext.getInitParameterNames();
while (initNames.hasMoreElements()) {
result++;
}
return result;
}
public boolean isEmpty() {
return !servletContext.getInitParameterNames().hasMoreElements();
}
};
}
}
class ServletContextInitMapEntry implements Map.Entry {
private Object key;
private Object value;
public ServletContextInitMapEntry(Object key, Object value) {
super();
this.key = key;
this.value = value;
}
public ServletContextInitMapEntry(Object key) {
super();
this.key = key;
}
public Object getKey() {
return key;
}
public Object getValue() {
return value;
}
public Object setValue(Object value) {
Object oldValue = this.value;
this.value = value;
return oldValue;
}
}