Question

i am able to render my charts to different file types:

 dRenderer = ce.getRenderer("dv.SVG");//or dv.PNG
 dRenderer.setProperty(IDeviceRenderer.FILE_IDENTIFIER, path);

but how to get the binary data as a stream? the charts will most likely be end in some one’s browser. so a file on disk i relativly useless.

(it would be stupid to save many charts on disk before reading them again, wouldn’t it?)

Answer in short:

it is possible to give an Outputstream instead of a path string as “FILE_IDENTIFIER” (works with both “dv.SVG” and “dv.PNG”)

Answer 1

If you are using SVG set the file identifier to the output stream and make sure to set the content type(response.setContentType( “image/svg+xml” );

    try
    {   
        RunTimeContext rtc = new RunTimeContext( );
        rtc.setULocale( ULocale.getDefault( ) );

        Generator gr = Generator.instance( );
        GeneratedChartState gcs = null;
        Bounds bo = BoundsImpl.create( 0, 0, 600, 400 );
        gcs = gr.build( idr.getDisplayServer( ), chart, bo, null, rtc, null );

        idr.setProperty( IDeviceRenderer.FILE_IDENTIFIER, out ); 
        idr.setProperty(
                IDeviceRenderer.UPDATE_NOTIFIER,
                new EmptyUpdateNotifier( chart, gcs.getChartModel( ) ) );

        gr.render( idr, gcs );
    }

See this link