Andreas Küllinger created PDFBOX-4814:
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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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