Re: GridSphere and applet

[Igor Rosenberg-3]

Following the discussion on applet, I gathered :

  - in the jsp, I should be including something like:
<jsp:plugin type="applet" code="test.TestApplet" archive="test.jar"
        codebase="." width="500" height="500"  jreversion="1.6">
    <!-- <jsp:param arguments for my applet removed here> -->
    </jsp:plugin>

  - I should have the applet code in a jar called test.jar

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[Igor Rosenberg-3]

Hello,

Following the discussion on applets, I gathered :

  - in the jsp, I should be including something like:
<jsp:plugin type="applet" code="test.TestApplet" archive="test.jar"
        codebase="." width="500" height="500"  jreversion="1.6">
    <!-- <jsp:param arguments for my applet removed here> -->
    </jsp:plugin>

  - I should have the applet code (containing test.TestApplet) in a jar
called test.jar placed in tomcat/webapps/ROOT/

My question is simple: how does the applet call back the portal? Should
I POST or GET? How do I form the url of the servlet?  The html code I
have in a simple portlet with a button looks like:

<form
action="http://127.0.0.1:8090/gridsphere/gridsphere/loggedin/12/r/"
method="post" id="form1" name="form1" onsubmit="return
validate( form1 );" >
        <input  class="portlet-form-button" type="submit" name="gs_action=buttonHit" value="Hit this button"/>
</form>


How was the url ".../gridsphere/gridsphere/loggedin/12/r/" formed ?

Thanks for helping!

Regards

Igor

============ Mona Wong-Barnum , Wed Oct 10 10:45:30 PDT 2007 ==========

        I fixed my GridSphere and applet problem and wanted to post it in  
case it can help someone else.

        Paul Jamason's solution required Apache and I did not want to  
involve another server and just use Tomcat instead.  His solution  
gave me a great place to start, thanks Paul.

        Here is that worked for me:

        1.  The JSP file contained:

                        <jsp:plugin type="applet"
                             code="weka.gui.applet.WekaApplet"  
archive="Weka.jar"
                             codebase="." width="500" height="500"
                             jreversion="1.6">
                         </jsp:plugin>

        2.  I put the Weka.jar in tomcat/webapps/ROOT/

cheers,
Mona

*********************************************************
     Mona Wong-Barnum
     Data Services Portal Developer
     San Diego Supercomputer Center
     http://datacentral.sdsc.edu

     Believing we are in control is an illusion
     that brings suffering.
*********************************************************

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Este mensaje y los ficheros adjuntos pueden contener informacion
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Al no estar asegurada la integridad de este mensaje sobre la red, Atos
Origin no se hace responsable por su contenido. Su contenido no constituye
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Aunque se esfuerza al maximo por mantener su red libre de virus, el emisor
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[monaw]

Hi Igor:

We punted on using the applet in our GS portal because there is a bigger problem for us than applet to portal communication...if the user navigates to another portlet and then returns to the applet portlet, the applet is restarted/reinitialized!  This will not work for our needs.  Consider that before you move forward with the applet.

If you wish to continue the applet route, I think you can pass the URL part to the applet as an argument.

If you are concerned with security for your applet, be aware that your applet can be launched by a URL call, even outside the portal so you should do something to ensure that it won't startup if not launched from your portal with proper authentication.

Good luck!

cheers,

Mona

*********************************************************

    Mona Wong-Barnum

    Data Services Portal Developer

    San Diego Supercomputer Center

    http://datacentral.sdsc.edu

    Better to be a pilgrim without a

    destination, than to cross the wrong

    threshold every day.

Sy Safransky

The Sun magazine

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[Igor Rosenberg-3]

Hello,

I use GS 3.0.8, over apache tomcat 5.5.20.

I'm trying to write an applet to integrate in gridsphere. I've got the applet paths fine, and the applet starts alright. But now I don't know how the applet can call back gridsphere. I guess the best way is to pass to the applet, as a parameter, the recall url pointing to the portal. I was expecting the following (all within the jsp page) to work:
       <ui:actionlink var="myaction" action="doSomething">Click</ui:actionlink>
       <% String recallURL = myaction ; %>
Let me cite the doc of http://docs.gridsphere.org/pages/viewpage.action?pageId=396
       " The var attribute creates an exported link that can be used elsewhere in the JSP page. "
So I thought the Java variable recallURL would be set to the url of the method called "doSomething". But I get the following error:
       "Unable to compile class for JSP
       An error occurred at line: 35 in the jsp file: /jsp/test/test.jsp
       Generated servlet error: myaction cannot be resolved"

I looked at the gridsphere java source, and getVar/setVar are only defined in ActionTag.java, and in TextTag.java. Might there some kind of problem with inheritence for the Action & Render Tags?

Main question is : how do people pass the callback url to their applets in GS 3.0.8? The whole point is for the applet to produce something, then call back the portal with this result!

Regards

Igor

=================
From: Mona Wong [mailto:mona@...]
Sent: viernes, 20 de junio de 2008 23:48
To: Igor Rosenberg
Cc: gridsphere-users
Subject: Re: GridSphere and applet

Hi Igor:

We punted on using the applet in =ur GS portal because there is a bigger problem for us than applet to =ortal communication...if the user navigates to another portlet and then =eturns to the applet portlet, the applet is restarted/reinitialized! =A0This will not work for our needs.  Consider that before you move =orward with the applet.

        If you =ish to continue the applet route, I think you can pass the URL part to =he applet as an argument.

        If you =re concerned with security for your applet, be aware that your applet =an be launched by a URL call, even outside the portal so you should do =omething to ensure that it won't startup if not launched from your =ortal with proper authentication.

        Good =uck!

cheers,
Mona


http://datacentral.sdsc.edu
=div>
    Better =o be a pilgrim without a
    destination, than to cross =he wrong
    threshold every day.
                        = Sy Safransky
                        = The Sun =agazine
*******************************************************=*


=/div>
=

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