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[Xpand] Out of memory when generating large files with Xpand [message #903459]

Thu, 23 August 2012 17:03

Alexander Fried

Messages: 4
Registered: December 2009

Junior Member

Hi all!

I'm currently running into problems when generating very large files with Xpand, as I run out of memory. Unfortunately, it is not an option to just generate smaller files, as the file format and further processing is not in my hands, i.e. its just required to produce them this way.

From what I'm seeing, it seems to me that Xpand is first building up the complete file contents in memory and only after all is generated it is written out to disk. That way its clear that I'll run out of memory eventually. Is there an option to directly write the generated code to file while the script is being executed? If not, what else to do? I'd rather not switch to hardcoded println.

Thanks,
Alex

[Updated on: Thu, 23 August 2012 17:04]

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Re: [Xpand] Out of memory when generating large files with Xpand [message #903478 is a reply to message #903459]

Thu, 23 August 2012 19:09

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hi,

i dont know of an out of the box solution never the less you could split up your template to generate mutiple files (with the same name)
and configure the outlet to use append mode.

~Christian

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: [Xpand] Out of memory when generating large files with Xpand [message #903493 is a reply to message #903459]

Thu, 23 August 2012 22:22

Karsten Thoms

Messages: 762
Registered: July 2009
Location: Dortmund, Germany

Senior Member

Hi Alex,

an option would be to provide an alternative implementation of org.eclipse.xpand2.output.Output that does the job for you. This can be set to the Generator class.

Kind regards,
~Karsten

Need professional support for Xtext, EMF, Eclipse IDE?
Go to: http://devhub.karakun.com
Twitter : @kthoms
Blog : www.karsten-thoms.de

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