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https://issues.apache.org/jira/browse/PDFBOX-2423?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14179423#comment-14179423
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ASF subversion and git services commented on PDFBOX-2423:
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Commit 1633501 from [~jahewson] in branch 'pdfbox/trunk'
[ https://svn.apache.org/r1633501 ]
PDFBOX-2423: Made page mode and layout constants in PDDocumentCatalog into enums
> Page tree handling needs rewriting
> ----------------------------------
>
> Key: PDFBOX-2423
> URL: https://issues.apache.org/jira/browse/PDFBOX-2423
> Project: PDFBox
> Issue Type: Bug
> Components: PDModel
> Affects Versions: 1.8.7, 2.0.0
> Reporter: John Hewson
> Assignee: John Hewson
> Priority: Blocker
> Fix For: 2.0.0
>
>
> The way in which PDFBox handles the Page tree needs to be rewritten,
> preferably from scratch. Currently the document catalog returns the raw
> objects from the page tree, wrapped in either a PDPage or PDPageNode.
> We need to abstract over the page tree and get rid of PDPageNode, we should
> provide methods which can add/remove PDPage objects *only*. The existing
> low-level access to the page tree is not needed at the PD-level.
> Inheritance of page properties such as crop box, resources, and rotation
> should be reimplemented to use whatever new page tree abstraction we invent.
> We can finally remove the old broken methods which didn't look up the
> inheritance tree when retrieving these values.
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