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Posted to dev@pdfbox.apache.org by "Andreas Küllinger (Jira)" <ji...@apache.org> on 2020/04/16 10:59:00 UTC

[jira] [Created] (PDFBOX-4814) Wrong COSType for OCProperties after merge

Andreas Küllinger created PDFBOX-4814:
-----------------------------------------

             Summary: Wrong COSType for OCProperties after merge
                 Key: PDFBOX-4814
                 URL: https://issues.apache.org/jira/browse/PDFBOX-4814
             Project: PDFBox
          Issue Type: Bug
          Components: PDModel
    Affects Versions: 2.0.19
            Reporter: Andreas Küllinger


If you merge a PDF document with OCProperties to a PDF document without OCProperties, the result of the merge is that the OCProperties type is no longer a COSDictionary but a COSObject. If a third document with OCProperties is merged with the previously created merge result, this leads to the following ClassCastException:

org.apache.pdfbox.cos.COSObject cannot be cast to org.apache.pdfbox.cos.COSDictionary at org.apache.pdfbox.multipdf.PDFCloneUtility.cloneMerge(PDFCloneUtility.java:227) at org.apache.pdfbox.multipdf.PDFCloneUtility.cloneMerge(PDFCloneUtility.java:229) at org.apache.pdfbox.multipdf.PDFMergerUtility.appendDocument(PDFMergerUtility.java:730) at pdfboxtest.Test.main(Test.java:38)

According to PDF Specification, OCProperties is always a dictionary.



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