Hi Moses,
It is probably not finding the file created by dot program. There are few
things to check
1) Is the variable dot.tmpdirectory=//tmp defined in the provenance
properties set correctly?
This is the place where dot creates temporary file. In addition, can you
please check what files are created in that folder
when you launch the provenance-browser application?
2) There is a logs folder under tomcat installation directory, which contains
a file 'catalina.out'. Please open the file and go to the end of it and
search for a string 'IMAGE MAP LOCATION'. Can you please tell me what is
printed next to it?
For an example in my case I see it as
IMAGE MAP LOCATION: /tmp/graph_6818224380574045926.png
Please let me know what you see for point 1 & 2.
Thanks
--Madhu
________________________________________
From: Moses Gone [[email protected]]
Sent: Friday, February 05, 2010 3:35 PM
To: madhu
Subject: Re: Provenance viewer
Dear Madhu,
First of all...thanks alot for the help. In deed when I added the hsqldb to the
lib directory....the issue of driver dissapeared. But now I have a new
problem...I cant view the graph. When i click on the link :View provenance
graph , I get the following error:
description The server encountered an internal error () that prevented it from
fulfilling this request.
exception
java.lang.NullPointerException
org.camera.provenance.viewer.servlets.GraphViewServlet.processRequest(GraphViewServlet.java:103)
org.camera.provenance.viewer.servlets.BaseServlet.doGet(BaseServlet.java:49)
javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
I have no idea why this is occurring ....any hint?
Regards,
Moses
On Tue, Jan 26, 2010 at 5:38 PM, madhu <madhu at sdsc.edu<mailto:madhu at
sdsc.edu>> wrote:
Hi Moses,
I can see one of the problem. Please stop the tomcat and copy the HSQL driver
to the webapps/camera-provenance-viewer/WEB-INF/lib folder and restart the
tomcat. With that change, atleast viewer should be able to find the driver.
Please go ahead and give t a try.
--Madhu
________________________________________
From: Moses Gone [algone at googlemail.com<mailto:[email protected]>]
Sent: Tuesday, January 26, 2010 2:50 AM
To: madhu
Subject: Re: Provenance viewer
Madhu,
Thank you so much for the help, I have installed provenance viewer. I also
changed the provenance.properties file.
db.driver=org.hsqldb.jdbcDriver
db.url=jdbc:hsqldb:hsql://localhost:9002/provenanceDB
db.username=SA
db.password=
I have a local hsql db that comes with Kepler with above details. I tried
connecting to it but I got the error that the driver could not be found. I am
still trying to check why thats the case even though I have a running instance
of hsql db.
Kind regards
Moses
On Mon, Jan 25, 2010 at 12:23 AM, madhu <madhu at sdsc.edu<mailto:madhu at
sdsc.edu><mailto:madhu at sdsc.edu<mailto:madhu at sdsc.edu>>> wrote:
Hi Moses,
I am attaching the provenance viewer war file with this mail. Please go ahead
and put it in tomcat webapps folder and restart the tomcat. Then shut down the
tomcat and go the webapps/camera-provenance-viewer/WEB-INF/classed folder and
open the provenance.properties file. Supply the information for your database.
Then restart the tomcat again.
I have tried the provenance viewer only in context of CAMERA project with
Oracle database. In principle, it should work with any database, but I have not
tried with any other database yet. Go ahead and give it a try.
Thanks
--Madhu
