/*
* 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.commons.configuration.web;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import javax.servlet.ServletRequest;
import org.apache.commons.collections.iterators.EnumerationIterator;
/**
* A configuration wrapper to read the parameters of a servlet request. This
* configuration is read only, adding or removing a property will throw an
* UnsupportedOperationException.
*
* @author <a href="mailto:[email protected]">Emmanuel Bourg</a>
* @version $Revision: 515306 $, $Date: 2007-03-06 22:15:00 +0100 (Di, 06. Mrz 2007) $
* @since 1.1
*/
public class ServletRequestConfiguration extends BaseWebConfiguration
{
/** Stores the wrapped request.*/
protected ServletRequest request;
/**
* Create a ServletRequestConfiguration using the request parameters.
*
* @param request the servlet request
*/
public ServletRequestConfiguration(ServletRequest request)
{
this.request = request;
}
public Object getProperty(String key)
{
String[] values = request.getParameterValues(key);
if (values == null || values.length == 0)
{
return null;
}
else if (values.length == 1)
{
return handleDelimiters(values[0]);
}
else
{
// ensure that escape characters in all list elements are removed
List result = new ArrayList(values.length);
for (int i = 0; i < values.length; i++)
{
Object val = handleDelimiters(values[i]);
if (val instanceof Collection)
{
result.addAll((Collection) val);
}
else
{
result.add(val);
}
}
return result;
}
}
public Iterator getKeys()
{
return new EnumerationIterator(request.getParameterNames());
}
}
|