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https://issues.apache.org/jira/browse/PDFBOX-5067?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17257857#comment-17257857
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Ralf Hauser commented on PDFBOX-5067:
-------------------------------------
Thanks for the feedback
I tested it on the basis of CreateVisibleSignature2.java ( also with setupMixed
15MB )
It needed 8 MB more Xmx (==> 69m). But PDDocument was only loaded once, so in
this case, the getter is not used. Although when you close
PDVisibleSignDesigner it would be deallocated anyway.
> Some of the constructors set that field, some don't (the one that calls
> {{calculatePageSizeFromStream}})
I only added it where the test did a Loader.loadPDF() - there may well be more
places it could be added. But still, I assume it is quicker and not that worse
for the memory if the load only happens once.
> make PDVisibleSignDesigner memory aware
> ---------------------------------------
>
> Key: PDFBOX-5067
> URL: https://issues.apache.org/jira/browse/PDFBOX-5067
> Project: PDFBox
> Issue Type: Improvement
> Components: Signing
> Affects Versions: 2.0.23
> Reporter: Ralf Hauser
> Priority: Major
> Attachments: patch_PDFBOX-2512.txt
>
>
> PDFBOX-2512 might have failed earlier if I hadn't used
> MemoryUsageSetting.setupMixed(15000000)
> to limit the memory usage of PDDocument document to 15 MB in
> CreateVisibleSignature in
>
> a) setVisibleSignDesigner() and used the now memory-aware constructor of
> PDVisibleSignDesigner
> and
> b) in signPDF(), reused PDDocument
> setTsaUrl(tsaUrl);
> PDDocument doc = null;
> if (null != visibleSignDesigner) {
> doc = visibleSignDesigner.getDocument();
> }
> if (null == doc) {
> doc = Loader.loadPDF(inputFile, memoryUsageSetting);
> }
> // creating output document and prepare the IO streams.
> ...
>
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