String old_uri=base_request.getRequestURI();
String old_context_path=base_request.getContextPath();
String old_servlet_path=base_request.getServletPath();
String old_path_info=base_request.getPathInfo();
String old_query=base_request.getQueryString();
Attributes old_attr=base_request.getAttributes();
MultiMap old_params=base_request.getParameters();
try
{
if (_named!=null)
_contextHandler.handle(_named, (HttpServletRequest)request, (HttpServletResponse)response, dispatch);
else
{
String query=_dQuery;
if (query!=null)
{
MultiMap parameters=new MultiMap();
UrlEncoded.decodeTo(query,parameters,request.getCharacterEncoding());
boolean rewrite_old_query = false;
if( old_params == null )
{
base_request.getParameterNames(); // force parameters to be evaluated
old_params = base_request.getParameters();
}
if (old_params!=null && old_params.size()>0)
{
// Merge parameters; new parameters of the same name take precedence.
Iterator iter = old_params.entrySet().iterator();
while (iter.hasNext())
{
Map.Entry entry = (Map.Entry)iter.next();
String name=(String)entry.getKey();
if (parameters.containsKey(name))
rewrite_old_query = true;
Object values=entry.getValue();
for (int i=0;i<LazyList.size(values);i++)
parameters.add(name, LazyList.get(values, i));
}
}
if (old_query != null && old_query.length()>0)
{
if ( rewrite_old_query )
{
StringBuffer overridden_query_string = new StringBuffer();
MultiMap overridden_old_query = new MultiMap();
UrlEncoded.decodeTo(old_query,overridden_old_query,request.getCharacterEncoding());
MultiMap overridden_new_query = new MultiMap();
UrlEncoded.decodeTo(query,overridden_new_query,request.getCharacterEncoding());
Iterator iter = overridden_old_query.entrySet().iterator();
while (iter.hasNext())
{
Map.Entry entry = (Map.Entry)iter.next();
String name=(String)entry.getKey();
if(!overridden_new_query.containsKey(name))
{
Object values=entry.getValue();
for (int i=0;i<LazyList.size(values);i++)
{
overridden_query_string.append("&"+name+"="+LazyList.get(values, i));
}
}
}
query = query + overridden_query_string;
}
else
{
query=query+"&"+old_query;
}
}
base_request.setParameters(parameters);
base_request.setQueryString(query);
}
ForwardAttributes attr = new ForwardAttributes(old_attr);
//If we have already been forwarded previously, then keep using the established
//original value. Otherwise, this is the first forward and we need to establish the values.
//Note: the established value on the original request for pathInfo and
//for queryString is allowed to be null, but cannot be null for the other values.
if ((String)old_attr.getAttribute(__FORWARD_REQUEST_URI) != null)
{
attr._pathInfo=(String)old_attr.getAttribute(__FORWARD_PATH_INFO);
attr._query=(String)old_attr.getAttribute(__FORWARD_QUERY_STRING);
attr._requestURI=(String)old_attr.getAttribute(__FORWARD_REQUEST_URI);
attr._contextPath=(String)old_attr.getAttribute(__FORWARD_CONTEXT_PATH);
attr._servletPath=(String)old_attr.getAttribute(__FORWARD_SERVLET_PATH);
}
else
{
attr._pathInfo=old_path_info;
attr._query=old_query;