RE: How to clear RenderParameters set in action ?

[Boyce, Keith Garry]

I agree with Frank here... This was a major stumbling block in our
application development and because we were not using a portal where we
could change the source (i.e: Sun One Portal), we had to imbed terrible
work around logic in every portlet to cause it to ignore render
parameterers... This should definitely be standardized in the next
spec.. In the meantime it would definitely be helpful to include this
proposed patch as an optional non-spec behaviour (enabled in jetspeed
config file. Is there one yet? i.e: WEB-INF/jetspeed-portal.xml)

Garry

-----Original Message-----
From: Frank Villarreal [mailto:[EMAIL PROTECTED]
Sent: Friday, January 27, 2006 4:25 PM
To: Jetspeed Users List
Subject: RE: How to clear RenderParameters set in action ?

> From: Archana Turaga [mailto:[EMAIL PROTECTED]
> Sent: Friday, January 27, 2006 03:04 PM
> To: Jetspeed Users List
> Subject: RE: How to clear RenderParameters set in action ?
>
>
> Hello Frank,
> I have a similar issue. Could you tell us where you applied the patch
> and what the content of the patch is? Basically my question how did
> you fix this issue? It would be really great help!!

Hi Archana:

The following is the code I modified in the
org.apache.jetspeed.engine.servlet.ServletRequestImpl class.  Notice
that I check for a parameter named "pgreq".  I add that parameter to
every menu item in my Velocity templates in order to indicate that a
direct PAGE request is occurring.  At that point, with the following
code, I effectively ignore ALL render parameters.


    public String getParameter( String name )
    {
        if (this.portletParameters.containsKey("pgreq")) {
                return null;
        }
        Object value = this.getParameterMap().get(name);
        if (value == null)
        {
            return (null);
        }
        else if (value instanceof String[])
        {
            return (((String[]) value)[0]);
        }
        else if (value instanceof String)
        {
            return ((String) value);
        }
        else
        {
            return (value.toString());
        }
    }

    public Map getParameterMap()
    {
        if (currentRequest == null || currentRequest != getRequest() )
        {
            // Cache the parameters for as long as the wrapped request
stays the same.
            // According to Servlet 2.3 SRV.6.2.2 the passed on
ServletRequest object
            // to an dispatched Servlet must remain the same (this one).
            // Tomcat solves this by injecting a new ServletRequest of
its own above
            // this one (the getRequest() object).
            // So, when that one has changed since the last time the
parameters have
            // been accessed, flush the cache and rebuild the map.
            currentRequest = getRequest();
            portletParameters = new HashMap();

            // get portlet params
            JetspeedRequestContext context = (JetspeedRequestContext)
getAttribute("org.apache.jetspeed.request.RequestContext");
            if (context != null)
            {
                PortalURL url = context.getPortalURL();
                Iterator iter =
url.getNavigationalState().getParameterNames(portletWindow);
                while (iter.hasNext())
                {
                    String name = (String) iter.next();
                    String[] values =
url.getNavigationalState().getParameterValues(portletWindow, name);
                    portletParameters.put(name, values);

                }
            }

            //get servlet params
            for (Enumeration parameters =
getRequest().getParameterNames();
parameters.hasMoreElements();)
            {
                String paramName = (String) parameters.nextElement();
                String[] paramValues = (String[])
getRequest().getParameterValues(paramName);
                String[] values = (String[])
portletParameters.get(paramName);

                if (getCharacterEncoding() != null)
                {
                    for (int i = 0; i < paramValues.length; i++)
                    {
                        try
                        {
                            paramValues[i] = new
String(paramValues[i].getBytes("ISO-8859-1"), getCharacterEncoding());
                        }
                        catch (UnsupportedEncodingException e)
                        {
                            ;
                        }
                    }
                }

                if (values != null)
                {
                    String[] temp = new String[paramValues.length +
values.length];
                    System.arraycopy(paramValues, 0, temp, 0,
paramValues.length);
                    System.arraycopy(values, 0, temp,
paramValues.length, values.length);
                    paramValues = temp;
                }
                portletParameters.put(paramName, paramValues);
            }
        }
        if (this.portletParameters.containsKey("pgreq")) {
                return Collections.unmodifiableMap(new HashMap());
        }
        return Collections.unmodifiableMap(portletParameters);

    }

    public Enumeration getParameterNames()
    {
        if (this.portletParameters.containsKey("pgreq")) {
                return Collections.enumeration(new HashMap().keySet());
        }
        return Collections.enumeration(this.getParameterMap().keySet());
    }

    public String[] getParameterValues( String name )
    {
        if (this.portletParameters.containsKey("pgreq")) {
                return null;
        }
        return (String[]) this.getParameterMap().get(name);
    }



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