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https://issues.apache.org/jira/browse/PDFBOX-1099?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andreas Lehmkühler reopened PDFBOX-1099:
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> Only parsing object streams if they are referenced by the xref table / stream
> -----------------------------------------------------------------------------
>
>                 Key: PDFBOX-1099
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-1099
>             Project: PDFBox
>          Issue Type: Improvement
>          Components: Parsing
>            Reporter: Thomas Chojecki
>            Assignee: Timo Boehme
>             Fix For: 1.8.0
>
>         Attachments: 2012-06-13_COSDocument_xrefObjStream.patch, 
> img1600315916950176362.pdf
>
>
> Some pdf documents have objects streams and don't reference them through the 
> xref table / stream. To prevent the stream parser to dereference such object 
> streams, we need to implement the type 2 part (case 2) inside the 
> PDFXRefStreamParser and store the objects inside a map. This will take some 
> load from the stream parser (see PDFBOX-1098) and causes less failures while 
> parsing a document.
> A sample pdf can be get from the issue PDFBOX-1098 and a patch is coming 
> soon. 

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