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Comment: converted to 1.6 markup

This page contains notes about a framework for handling XMP metadata.

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Goal

Wiki MarkupIn order to satisfy the PDF/A-1 specification Apache FOP needs a small XMP metadata framework. A generalized framework for XMP could be used inside the whole XML Graphics project and in other projects such as \[http://www.pdfbox.org PDFBox\].

Existing Efforts

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So far, there are no major open source XMP toolkits in Java around. \[http://www. lowagie.com/iText/ iText\] has some code and Ben Litchfield's \[http://sourceforge.net/projects/jempbox JempBox\] is another effort. Ben offered to work with us on this.

Requirements

Mandatory

  • compatible with JDK 1.3 and higher
  • parsing XMP (both from a SAX stream as well as XMP packets loaded from arbitrary files)
  • writing XMP (both as XMP snippets and XMP packets)
  • a suitable in-memory representation of XMP
  • user-friendly read/write access to XMP values through XMP schemas
  • Merging of two XMP documents
    • Use case: The main XMP document is contained in an XSL-FO file but the user agent (FOP) has additional values that need to be merged in (FOP's values overriding the ones from the FO file).

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http://svn.apache.org/viewvc/xmlgraphics/commons/trunk/examples/java/xmp/