[news.eclipse.birt] Re: How to access the underlying chart object in a r

[Jason Weathersby <jasonweathersby@xxxxxxxxxx>]

Stuart,

Try
ReportDesignHandle rdh =(ReportDesignHandle) design.getDesignHandle( );
ExtendedItemHandle chart = (ExtendedItemHandle) 
rdh.findElement("mychart" );			
IReportItem item = chart.getReportItem();
Chart cm = (Chart)item.getProperty("chart.instance");

Jason

Stuart Roe wrote:
> Can anyone help me with accessing the underlying chart object within the 
> design returned from <engine>.openReportDesign(..).
>
> I have managed to locate the ExtendedItem object for the chart within 
> the design and I'm able to see the reference Chart object (cm) within 
> the debugger but I'm unable to locate a method to return the reference.
>
> The boiled down version of my code currently consists of:
>
> design = beng.getEngine().openReportDesign("test.rptdesign");
> DesignElementHandle dh = design.getDesignHandle();
> DesignElement chartDE = dh.getModule().findElement("Chart");
> ExtendedItem chartEI = (ExtendedItem)chartDE;
> IReportItem elementRI = chartEI.getExtendedElement();
>
> I can see the cm member with elementRI (typed ChartReportItemImpl), but 
> I'm unable to access it.
>
> Why am I doing this?
> I'm creating a library which will allow our development staff to use 
> BIRT to define various charts and reports (including the appropriate 
> SQL). These will be loaded into our application when the user selects 
> various options.
>
> With the charts, these will be presented to the user as part of the 
> page. If I can get the chart object I think that I'll be able to render 
> the chart straight into a swing component.
>
> The reports will be rendered to HTML and displayed via an integrated 
> browser window.
>
> Thanks for any help,
>
> Stuart.