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https://issues.apache.org/jira/browse/PDFBOX-3322?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15273677#comment-15273677
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Petras commented on PDFBOX-3322:
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Only in the updated example the options are closed in the place it is created.
As the options may be closed ONLY after _doc.saveIncremental(fis, fos)_ is
invoked (the action unrelated to SignatureOptions construction), the logic
which does the PDF saving and closing must also somehow obtain and close the
options as well. I can hardly remember any other structure in PDModel
architecture, which would require separate closing beside closing PDDocument.
Its really confusing.
> Warning "You did not close a PDF Document" when visual signature is added
> -------------------------------------------------------------------------
>
> Key: PDFBOX-3322
> URL: https://issues.apache.org/jira/browse/PDFBOX-3322
> Project: PDFBox
> Issue Type: Improvement
> Components: PDModel, Signing
> Affects Versions: 1.8.11
> Reporter: Petras
> Assignee: Tilman Hausherr
> Labels: signature
> Fix For: 1.8.13
>
> Attachments: PDFBOX_3322_VisualSignatureClosing.patch
>
>
> When visual signature is added, warning "You did not close a PDF Document" is
> added to the output log. It appears, that _VisualSignatureParser_ creates an
> instance of _COSDocument_ and later is held by _SignatureOptions_, but for
> this instance the {{#close()}} method is never called, which results to that
> warning reported by its {{#finalize()}} method.
> Probably it should by closed by _PDDocument_ when used after signing.
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