Change datasource of .rptDocument at runtime

Hi,
 
i'm currently building a Birt-server in Java using multi-threaded socket-based communication with separate run and render tasks.
 
My question: is it possible to change the datasource of a .rptDocument at runtime?; An XML-datasource to be more specific... The XML-datasource structure is always the same, but the data is different.
 
Why do I ask? it seems that creating the rptDocument takes by far the longest time in the process. (The cause for this might be that my rptDesigns are very complex)
So is it possible to keep the .rptDocument open at all times and just feed it different XML-Data?
 
Kind regards,
 
Steven

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Comments

JFreeman

I'm not sure there is a way to do this. The rptdocument is generated with all of the data included directly in the rptdocument so it can be opened without needing a connection to the data source. Additionally changes to the data could mean differences in the pagination, layout, etc. which means the whole thing will essentially need to be re-rendered anyways.
 
I think the better approach is to investigate the performance difference of generating an rptdocument versus other output formats such as PDF/HTML.