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Dynamic Datasorce from URL Parameter

zax

Hello, 
 
This probably quite simple, but I am stuck. 
 
I have a report on a tomcat web server that I want to use on many databases. My thought was to pass in the host name as a URL variable and using property binding to format the JDBC connection string. 
 
But this does not work. The URL parameter is passed, the user enters any user parameters, and I get the error: 
 
<pre class='_prettyXprint _lang-auto _linenums:0'>org.eclipse.birt.report.engine.api.EngineException: An exception occurred during processing. Please see the following message for details:
Error evaluating Javascript expression. Script engine error: Report parameter "project" does not exist</pre>
 
So how do I pass the URL variable onto the engine so it is available for my script? 
 
Thanks in advance, 
Stephen

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Comments

averma

Hi Stephen,
Edit your data source and go to the property binding tab and define you database url as params["paramname"].value Here you can use expression builder to define values for JDBC driver class/URL, username, password etc. instead of hard coded values. Let me know if this approach works.

Ashwini Verma

zax

I saw what I was doing straight away. I was not using ".value". My code now works in Eclipse, so depending on what I set the parameter's default to, depends on what database a simple SELECT COUNT(*) query uses.

I knew it would be something simple, so thank you for unsticking me...

Stephen