[Glass] sorting and merging

[Sebastian Heidbrink]

Hi!

I need to offer access to CSV formated data via a REST interface.

Is there any best practice and or  anti pattern to sort / merge / group 
the data which is held in different keyed collections and/or collections 
before I write the data onto a stream?
Right now I use a modified NeoCSV to read and write data. I added a 
CanonStringDict instance variable to the Reader to prevent unneccessary 
String instance duplication.

I am thinking of memory or processing time issues.

Thanks
Sebastian
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