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https://issues.apache.org/jira/browse/PDFBOX-2999?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14934210#comment-14934210
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Timo Boehme commented on PDFBOX-2999:
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For the next steps I need to know the intended usage pattern for {{COSStream}}.
Ideally we would have
- requesting an input stream without an corresponding output stream being
created before is not allowed (throw some kind of exception)
- when a new output stream is requested, the previous {{randomAccess}} buffer
will be closed (which means any input stream being created on it must not be
accessed anymore - an IOException will be thrown otherwise)
Can we agree on these assumptions or do we have existing usage pattern contrary
to them?
> Optimize COSStream scratch file usage
> -------------------------------------
>
> Key: PDFBOX-2999
> URL: https://issues.apache.org/jira/browse/PDFBOX-2999
> Project: PDFBox
> Issue Type: Improvement
> Components: PDModel
> Affects Versions: 2.0.0
> Reporter: Timo Boehme
> Assignee: Timo Boehme
>
> The usage of scratch file buffers in COSStreams is quite sloppy. A never
> filled buffer is created in the beginning and existing buffers are discarded
> without being closed when a variant of {{createOutputStream}} is called.
> Furthermore it should be clarified if requesting an input stream without
> having created an output stream before is ok and if a returned input stream
> keeps valid after a new output stream is created (which is crucial for proper
> buffer-closing).
> This issue should resolve some of the shortcomings and document the expected
> or even required usage of COSStream.
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