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https://issues.apache.org/jira/browse/PDFBOX-2539?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15018293#comment-15018293
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John Hewson commented on PDFBOX-2539:
-------------------------------------
This was discussed on the [mailing
list|http://pdfbox-dev.markmail.org/search/?q=threadlocal#query:threadlocal+page:1+mid:y3nzkm74jhc4xoeb+state:results]
recently. Basically, PDFBox's architecture can't support per-document
FontProvder(s) because PDDocument and PDFont have entirely separate lifecycles,
including static instances of PDType1Font for the base 14 fonts which aren't
tied to any particular document. Additional changes based on this discussion
were made in PDFBOX-2997.
The solution is to use ThreadLocal in your custom FontProvider, that way each
thread has its own PDDocument and its own FontProvider. That'll get you the
result you're after.
> [PATCH] Allow non static FontProvider
> -------------------------------------
>
> Key: PDFBOX-2539
> URL: https://issues.apache.org/jira/browse/PDFBOX-2539
> Project: PDFBox
> Issue Type: Bug
> Components: FontBox
> Affects Versions: 2.0.0
> Reporter: simon steiner
> Attachments: fontProvider.patch
>
>
> I would like to use multiple instances of fontprovider in thread safe way
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