com.ocpsoft.pretty.faces.servlet.PrettyFacesWrappedRequest Maven / Gradle / Ivy
/*
* Copyright 2010 Lincoln Baxter, III
*
* Licensed 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 com.ocpsoft.pretty.faces.servlet;
import java.util.Collections;
import java.util.Enumeration;
import java.util.Map;
import java.util.TreeMap;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
/**
* @author Lincoln Baxter, III
*/
public class PrettyFacesWrappedRequest extends HttpServletRequestWrapper
{
private final Map modifiableParameters;
/**
* Create a new request wrapper that will merge additional parameters into
* the request object without prematurely reading parameters from the
* original request.
*
* @param request
* @param additionalParams
*/
public PrettyFacesWrappedRequest(final HttpServletRequest request, final Map additionalParams)
{
super(request);
modifiableParameters = new TreeMap();
modifiableParameters.putAll(additionalParams);
}
@Override
public String getParameter(final String name)
{
String[] strings = getParameterMap().get(name);
if (strings != null)
{
return strings[0];
}
return null;
}
@Override
public Map getParameterMap()
{
Map allParameters = new TreeMap();
allParameters.putAll(super.getParameterMap());
allParameters.putAll(modifiableParameters);
return Collections.unmodifiableMap(allParameters);
}
@Override
public Enumeration getParameterNames()
{
return Collections.enumeration(getParameterMap().keySet());
}
@Override
public String[] getParameterValues(final String name)
{
return getParameterMap().get(name);
}
}