[jira] [Created] (PDFBOX-6009) Splitter does not include structure tree in documents past the first split

["Tilman Hausherr (Jira)" <ji...@apache.org>]

Tilman Hausherr created PDFBOX-6009:
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             Summary: Splitter does not include structure tree in documents past the first split
                 Key: PDFBOX-6009
                 URL: https://issues.apache.org/jira/browse/PDFBOX-6009
             Project: PDFBox
          Issue Type: Bug
          Components: Utilities
            Reporter: Tilman Hausherr
         Attachments: pdfbox-split-missing-tags_mail 15.5.2025-p1.pdf, pdfbox-split-missing-tags_mail 15.5.2025-p2.pdf, pdfbox-split-missing-tags_mail 15.5.2025-p3.pdf, pdfbox-split-missing-tags_mail 15.5.2025.pdf

As submitted by Alastair Porter in the users mailing list

java -jar pdfbox/app/target/pdfbox-app-4.0.0-SNAPSHOT.jar split -i input.pdf -outputPrefix output-split

Only first page has the appropriate structure tree (/K is missing)

=== from the post in the mailing list ===
In the first file, I correctly see the /K element. What's more, this element has correctly been pruned and doesn't include any items from the input document which point to pages that are not in this split.
In subsequent split files, I see no /K element in the StructTreeRoot at all.

I attached a PDF which I've been using for simple testing, which exhibits this behaviour.

I had a bit of a look through the existing code, and I see that in Splitter.java, in cloneStructureTree
{code:java}
COSBase k1 = srcStructureTreeRoot.getK();
COSBase k2 = new KCloner(dstPageTree).createClone(k1, dstStructureTreeRoot.getCOSObject(), null);
dstStructureTreeRoot.setK(k2);
{code}
k2 is always null after the first split, it seems like it may not be created correctly.



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