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https://issues.apache.org/jira/browse/PDFBOX-2423?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tilman Hausherr resolved PDFBOX-2423.
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Resolution: Fixed
> Page tree handling needs rewriting
> ----------------------------------
>
> Key: PDFBOX-2423
> URL: https://issues.apache.org/jira/browse/PDFBOX-2423
> Project: PDFBox
> Issue Type: Improvement
> Components: PDModel
> Affects Versions: 1.8.7, 2.0.0
> Reporter: John Hewson
> Assignee: John Hewson
> Fix For: 2.0.0
>
> Attachments: 025957.pdf, 26101_Colors.ai-1.png,
> 26101_Colors.ai-1.png-diff.png, Basiswissen-Vorschriften.pdf-3.png,
> Basiswissen-Vorschriften.pdf-3.png-diff.png,
> Basiswissen-Vorschriften.pdf-4.png,
> Basiswissen-Vorschriften.pdf-4.png-diff.png, PDFBOX-1058.pdf-1.png,
> PDFBOX-1058.pdf-1.png-diff.png, PDFBOX-1058.pdf-4.png,
> PDFBOX-1058.pdf-4.png-diff.png, PDFBOX-1094-tiling_pattern.pdf,
> PDFBOX-1711-cmyk.pdf-1.png, PDFBOX-1711-cmyk.pdf-1.png-diff.png,
> PDFBOX-1794-vattenfall.pdf-1.png, PDFBOX-1794-vattenfall.pdf-1.png-diff.png,
> PDFBOX-1917.pdf-1.png, PDFBOX-1917.pdf-1.png-diff.png,
> Transparency_group_rewrite3.patch, asy-functionshading.pdf-1.png,
> asy-functionshading.pdf-1.png-diff.png, bugzilla869140.pdf,
> example_026.pdf-1.png, gs-bugilla691763.pdf, gs-bugzilla688601.pdf,
> gs-bugzilla689518.pdf, gs-bugzilla690467.pdf, gs-bugzilla693322.pdf,
> gs-bugzilla694385.pdf, jagpdf_doc_patterns.pdf, samsung_galaxy_s_4_um-p1.pdf,
> test-files.zip
>
>
> 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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