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| Reading and writing to PDF |
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| santy |
 Posted: Thu Dec 14, 2006 11:19 pm Post subject: Reading and writing to PDF |
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Centurion
Joined: 03 Nov 2006
Posts: 141
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Hi
My requirement is bit strange.
I Have to read PDF file(PDF1) through JAVA put it in a DB and then read another PDF file(PDF2). then fetch PDF file -PDF1 from DB and concatinate it with PDF2 in WMB and send entire output to output queue.
on output queue when i run java program to create PDF file which is (PDF1 + PDF2) .. I am able to create output PDF with content of either PDF1 or PDF2 only.
My ESQL is as follows:
SET OutputRoot.BLOB.BLOB = TABLE_CONTENTS|| QUEUE_CONTENTS;
here TABLE_CONTENTS contains PDF1 read from database table using select statement and QUEUE_CONTENTS is PDF2 read from queue.
above ESQL generates output PDF with QUEUE_CONTENTS only and If i change it to SET OutputRoot.BLOB.BLOB = QUEUE_CONTENTS || TABLE_CONTENTS .. it generated output PDF with PDF1(TABLE_CONTENTS) only.
Please suggest some tricks so that My output PDF is combination of of PDF1 and PDf2.
PS: WMB6.0 , WIN XP. and Input node paerser as BLOB
regards,
santy |
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| fjb_saper |
| Posted: Fri Dec 15, 2006 3:25 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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Seems that you need some kind of PDF proxy that allows you to add pdf1 to pdf2 or vice versa. 
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| jefflowrey |
| Posted: Fri Dec 15, 2006 4:49 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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You don't even want to think about playing around with the content of PDF documents in ESQL.
Yes, technically, they are text files. BUT they are highly structured text files that contain the source code for a probably Turing complete graphics description programming language. You wouldn't think you could combine two Java programs together by stringing the source code end to end, now would you?
There should be freely available and easy to find Java classes for doing all kinds of manipulations on PDF files. You should go look for those, and then figure out how to write a JavaCompute node that will combine your PDF files.
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I am *not* the model of the modern major general. |
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