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RE: OdaDataSetHandle ref for existing.rptdesign template

by Tom Corcoran :: Rate this Message:

The BIRT apis do seem to have a big learning curve, It's frustrating that they are still being fundamentally changed it seem; we were disappointed to find after purchasing the 2 BIRT addison wesley books 2 weeks ago, the examples given around this functionality are already out of date with BIRT 2.2.

So now I have:

EngineConfig config = new EngineConfig();
config.setBIRTHome("birt-runtime-2_2_2/ReportEngine");
Platform.startup(config);
IReportEngineFactory factory = (IReportEngineFactory) Platform.createFactoryObject(IReportEngineFactory.EXTENSION_REPORT_ENGINE_FACTORY)
IReportEngine engine = factory.createReportEngine(config)
IReportRunnable design = engine.openReportDesign('reports/myreport.rptdesign')
ReportDesignHandle report = (ReportDesignHandle) design.getDesignHandle();
DataSourceHandle dso = report.findDataSet('TestSet') // your suggestion

this gives:

Unexpected exception: Cannot cast object 'org.eclipse.birt.report.model.api.OdaDataSetHandle@1108727' with class 'org.eclipse.birt.report.model.api.OdaDataSetHandle' to class 'org.eclipse.birt.report.model.api.DataSourceHandle

Any help appreciated.

Yu Li wrote:

ReportDesignHandle.findDataSet(datasetname);

Or you can get the dataset list:
ReportDesignHandle.getDataSets();

Thanks!

-----Original Message-----
From: birt-report-designer-dev-bounces@eclipse.org
[mailto:birt-report-designer-dev-bounces@eclipse.org] On Behalf Of Tom
Corcoran
Sent: Thursday, May 29, 2008 4:22 PM
To: birt-report-designer-dev@eclipse.org
Subject: [birt-report-designer-dev] OdaDataSetHandle ref for
existing.rptdesign template

Starting with a .rptdesign template I am looking to manipulate this at
runtime to run against a number of databases.

http://dev.eclipse.org/newslists/news.eclipse.birt/msg20490.html
outlines doing
OdaDataSetHandle dsHandle = designFactory.newOdaDataSet( "ds",

"org.eclipse.birt.report.data.oda.jdbc.JdbcSelectDataSet" );
I could then point odaURL to the new database, using:
dsHandle.setProperty( "odaURL",
"jdbc:classicmodels:sampledb" );

My question is how can I get an instance of OdaDataSetHandle for
existing
.rptdesign rather than create a new one?

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