I don't see how your approach can work. The formatting of a text field appearance may not change but the content will be different depending on the data. Appearance generation is an expensive and complicated process and many tools out there don't even bother to do it. If you really need the appearances you'll have to bite the bullet but if you don't need them because your Acrobat version will generate them then use AcroFields.setGenerateAppearances(false).
Best Regards, Paulo Soares > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On > Behalf Of Robert Müller > Sent: Wednesday, December 08, 2004 11:13 PM > To: [EMAIL PROTECTED] > Subject: [iText-questions] AcroFields.setFields perfomance issues > > hi, > > i'm currently evaluating iText's form-merging functions. i > need to merge > xfdf-data (stored in oracle-clobs) with pdf-forms (stored in > oracle-blobs). > basically this works fine but i encounter some performance > problems. in > particular AcroFiels.getAppearance seems to be very "expensive". > i need to merge different xfdf-data with the same pdf-form about 500 > times (so the formatting of the text fields won't change, > just the data) > and store it in the database. > i "wrote" PdfTools which basically consists of the merge_fdf example > (and com.lowagie.tools.concat_pdf - just added the oracle-lob-stuff). > > what i'm trying to do is "remember" the formatting of a TextField > (because getAppearance seems to make up for 90% of the > "merging-process") and just change it's value > (AcroFieldsHelper) - don't > know if this is a valid approach. > > i had to modify AcroFields.setField to accomplish this (call > getAppearanceCheckKnown instead of getAppearance and PdfTools > passes the > "helper-class"). > > as i'm new to java and pdf-generating i've got the feeling the i'm > missing some important point somewhere ... maybe there's a way of > "bulk-merging" > (without messing around with the iText classes) > > regards, > robert > > ps: sorry for my english and the german comments ... > pps: i'm new to java, pdf and mailing-lists, so if you can't open the > attachments or something else just let me know > > --- > Outgoing mail is certified Virus Free. > Checked by AVG anti-virus system (http://www.grisoft.com). > Version: 6.0.805 / Virus Database: 547 - Release Date: 03.12.2004 > > > ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://productguide.itmanagersjournal.com/ _______________________________________________ iText-questions mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/itext-questions
