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December 21st, 2009 19:00

FileNet Specific Centera Object / BLOB Format

I am reading blobs written to Centera by a FileNet conversion process.. the blobs contain header info and TOC info for each page of the document. Is there a class, SDK, library, sample code, ANYTHING that describes the format of these blobs so that I can read them and navigate  / itterate through the pages within the blob(s)?? thx!

20 Posts

December 21st, 2009 22:00

Header and tail of BLOB is made by FileNet CASR and you need to ask that format to IBM.

Or you could make your own logic to find the starting point and ending point of BLOB file if you know the file format of each BLOBs like TIFF, JPEG, MS Word, PDF so on because this kind of files have own header format. Hope this helps you.

Thank you

YT

6 Posts

December 22nd, 2009 06:00

Thx for the input! I am trying to get the information from IBM, and yes I thought of the same thing you did as far as doing a raw read of the blob and attempting to dis-assemble the components based on header/trailer identification etc... there are many considerations with his approach that make it less preferable (jpeg and tiff are possible filetypes within blob(maybe more), also if blob contains 1 document that contains 1000 pages, each represented by a tiff in the blob, and i want to read page 657, VTOC info may facilitate read of only the bytes applicable to page 657 if the VTOC contains pointers and/or start/end displacements into the blob) but if all else fails I will have to embark down that path... Anyone else have any thoughts / info? If I find anything out I will post it in this thread. thx!

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2 Posts

August 20th, 2013 08:00

Hello!

I'm facing the same problem at the moment.

Did you get any details about the structure from IBM?

Best regards

Thomas

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