Virtualizer attribute maxsize

[2006 JR Open Discussion]

By: ACSD - acdourado

Virtualizer attribute maxsize

2006-01-16 09:06

Hi,

I'm using report virtualizer to generate large reports.

To obtain an object JRFileVirtualizer I have to define the attribute maxsize. What does this number mean? I tried with 2, 500 and 1000 and I couldn't find any difference.

I got other problem: I tried to generate a large report in PDF and it ran OK. But when I tried the XLS it occurred an Out of Memory Error. Is this problem somehow related to the maxsize used in the JRFileVirtualizer object.

 

Thanks,

Ana

 

 

By: Lucian Chirita - lucianc

RE: Virtualizer attribute maxsize

2006-01-17 00:46

Hi

 

The maxsize parameter is the number of report pages that the virtualizer will keep in memory.

 

Regarding the XLS export, it is known that the POI library keeps the whole generated document in memory. The virtualizer saves memory used by the JasperPrint object, it cannot affect the memory used by POI. This issue will only be fixed when POI will support streaming output (which might not be possible due to the XLS format).

 

Regards,

Lucian