RE: OdaDataSetHandle ref forexisting.rptdesign template

Any BIRT API change we make sure we do take care of the backward compatibility issue. For your code, I think maybe you should write:

 

DataSetHandle dso = report.findDataSet('TestSet')

 

The OdaDataSetHandle cannot be casted to a  DataSourceHandle.

 

Thanks!

 

 

-----Original Message-----
From: birt-report-designer-dev-bounces@... [mailto:birt-report-designer-dev-bounces@...] On Behalf Of Tom Corcoran
Sent: Friday, May 30, 2008 7:52 AM
To: birt-report-designer-dev@...
Subject: RE: [birt-report-designer-dev] OdaDataSetHandle ref forexisting.rptdesign template

 

 

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examples given around this functionality are already out of date with BIRT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@...

> [mailto:birt-report-designer-dev-bounces@...] On Behalf Of Tom

> Corcoran

> Sent: Thursday, May 29, 2008 4:22 PM

> To: birt-report-designer-dev@...

> 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?

>

> --

> View this message in context:

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> ate-tp17517667p17517667.html

> Sent from the Eclipse BIRT - Report Designer - Dev mailing list archive

> at Nabble.com.

>

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