Hello J�rgen and list
Well I got around to your suggestion and I must have done something wrong, I got no graph.... here is the Velocity template line I used and
what it expanded to
<img src="$link.setPage("Graph.vm")"/><img src="http://localhost:8080/collabAdvizor/servlet/collabAdvizor/template/Graph.vm"/>
I added some code to create charts inside an existing action's doPerform method.
My method was called but I got no graph. But I did find some indication of something inside a 275K file called
c:/tdk-2.3/work/Standalone/localhost/collabAdvizor/SESSION.ser
There were a couple of strings in there that refered to JFreeChart.
I really don't see how I could have a graph when the template line expands to what I got..... I know I have more investigating and learning to do, any ideas were I should be looking?
It would be nice if I could write the graph file into a temp location that I could construct a URL for.
Dave
J�rgen Hoffmann wrote:
Hi David,
this is just a screen class which extends RawScreen as in my example. Since I am taking the HttpOutputStream there and wirte to it and close it, there is no template which has to be parsed...
I have commented my source below:
/* Extend RawScreen, so we can write directly to the Servlets OutputStream */ public class ArchiveImage extends RawScreen {
/* return the Content type of this page so the browser knows what is coming */ protected String getContentType(RunData data) { return "image/jpeg"; }
protected void doOutput(RunData data) throws Exception
{
/* Get all the necessary Data to display the screen.
The Path to the Image (which is stored on the filesystem
rather than the db) is stored inside the db
*/
AccountingArchive record =
AccountingArchivePeer.retrieveByPK(data.getParameters().getInt("id"));
/* Now that we have the record open the image and get an inputstream for it */ FileInputStream in = new FileInputStream(Archiver.IMAGE_PATH + "/" + record.getImagePath());
/* Create a new ByteBuffer for Reading the Content */
byte[] b = new byte[2048];
/* Get The OutputStream for this screen */
OutputStream out = data.getResponse().getOutputStream();
/* While we can read Data into the Buffer print it on the
OutputStream of the Screen */
while (in.read(b) > -1)
{
out.write(b);
}
/* Finally Flush the Stream */ out.flush(); }
}
HTH
J�rgen Hoffmann
Am Mo, den 17.05.2004 schrieb David Harris um 16:20:
J�rgen,
If Image.vm does not exist then what is going in the Velocity template file that contains the following line?
<img src="$link.setPage("mrtg,Image.vm")" border="0"/>
J�rgen Hoffmann wrote:
Hi,
exactly. In fact it doesn't even exist.
Kind regards
J�rgen Hoffmann
-----Urspr�ngliche Nachricht-----
Von: Robles, Rogelio [mailto:[EMAIL PROTECTED] Gesendet: Samstag, 15. Mai 2004 03:58
An: 'Turbine Users List'
Betreff: RE: communication between turbine servlets and JFreeChart
And what do you put inside Image.vm?,
Should be empty if you just want to force Turbine to load and run your de.byteaction.modules.screens.mrtg.Image class, right?
Thanks, Rogelio
-----Original Message-----
From: J�rgen Hoffmann [mailto:[EMAIL PROTECTED] Sent: Friday, May 14, 2004 1:11 AM
To: Turbine Users List
Subject: Re: communication between turbine servlets and JFreeChart
...
<img src="$link.setPage("mrtg,Image.vm")" border="0"/>
kind regards
J�rgen Hoffmann
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