WebViewer throws NullPointer Exception at startup

AlexI · 2009-01-13T08:30:43+00:00

Hi, i am trying to integrate the WebViewer into a RCP client. I have followed this RCP Example (BIRT) 2.1 - Eclipsepedia example and did the two needed steps: 1. Added the Required Plug-In Dependencies. and …

AlexI

Hi, 
 
i am trying to integrate the WebViewer into a RCP client. I have followed this <a class='bbc_url' href='http://wiki.eclipse.org/RCP_Example_(BIRT)_2.1'>RCP Example (BIRT) 2.1 - Eclipsepedia</a> example and did the two needed steps: 
 
1. Added the Required Plug-In Dependencies. 
and 
2. Added this line: WebViewer.display(reportName, WebViewer.HTML, true); 
 
The problem is - nothing is displayed. 
Instead it throws an exception, it looks like the WebViewer cant find some port or just can't start. I searched for something on this but found nothing, any suggestions/ideas please? 
 
Here is the exception: 
 
java.lang.NullPointerException 
at org.eclipse.birt.report.viewer.utilities.AppServerWrapper.getPort(AppServerWrapper.java:207) 
at org.eclipse.birt.report.viewer.utilities.WebappAccessor.getPort(WebappAccessor.java:162) 
at org.eclipse.birt.report.viewer.utilities.WebViewer.getBaseURL(WebViewer.java:296) 
at org.eclipse.birt.report.viewer.utilities.WebViewer.createURL(WebViewer.java:489) 
at org.eclipse.birt.report.viewer.utilities.WebViewer.createURL(WebViewer.java:457) 
at org.eclipse.birt.report.viewer.utilities.WebViewer.display(WebViewer.java:856) 
at org.eclipse.birt.report.viewer.utilities.WebViewer.display(WebViewer.java:830) 
at info.novatec.incharge.rcp.editor.reporting.dialog.ReportStartDialog.run(ReportStartDialog.java:234) 
at info.novatec.incharge.rcp.editor.reporting.dialog.ReportStartDialog.buttonPressed(ReportStartDialog.java:472) 
 
I have run successfully the example projects from the link above, so its probably not an issue of the environment. I use Eclipse Ganymede and BIRT 2.3. 
 
Tanks in advance.

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AlexI

hi, it's me again.. looks like no one has a clue on my situation... i'll try to generalise the question: Can anyone suggest me please, some documentation on WebViewer's settings/methods/exceptions that it can throw.. or more examples with it..?

I see the WebViewer's .display method is deprecated... But what should i use instead of it...?
Where can I find any type of reference or documentation on this and on what exceptions and in which cases can it throw...??
The second one would be more important. I've checked BIRTs official site..but nothing there..

p.s. I've figured out that the WebViewer needs the .startup() method to be called before the .display(..) is called... So it starts now, but displays not the report, instead an error message: "+ org.eclipse.birt.report.service.api.ReportServiceException: The output format html is not supported." Any ideas why this would occur?

Thanks a lot.

hwolf

Hi AlexI, 
 
with your Problem: 
<blockquote class='ipsBlockquote' data-author="AlexI">The output format html is not supported.</blockquote>
 
i can eventually help you because i had the same problem... 
 
You need to add the following plugins to your dependecies in order to get the output emitters: 
org.eclipse.birt.report.engine.emitter.html 
 
it's possible that you also need: 
org.eclipse.birt.report.engine 
org.eclipse.birt.report.engine.emitter.pdf 
org.eclipse.birt.report.engine.emitter.ppt 
org.eclipse.birt.report.engine.emitter.prototype.excel 
 
 
 
I'm also looking for documentation about the WebViewer and other Classes/Methods. If you found a JavaDoc Link or something else it would be nice if you could post it here. 
 
Holger