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https://issues.apache.org/jira/browse/PDFBOX-2362?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14140870#comment-14140870
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Tilman Hausherr commented on PDFBOX-2362:
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The two operator bugfixes prove a saying that I've heard from time to time:
"never trust a comment".
> Remove .properties file usage in PDFStreamEngine
> ------------------------------------------------
>
> Key: PDFBOX-2362
> URL: https://issues.apache.org/jira/browse/PDFBOX-2362
> Project: PDFBox
> Issue Type: Improvement
> Components: PDModel
> Reporter: John Hewson
> Assignee: John Hewson
> Fix For: 2.0.0
>
>
> PDFStreamEngine and its subclasses currently load a list of OperatorProcessor
> classes from .properties files. This makes it difficult to override the
> classes, as the .properties files also need to be copied and pasted if
> changes are made. Worse still, subclasses in other modules are known to load
> .properties files from the pdfbox module which breaks OSGi, as discovered in
> PDFBOX-2358.
> There is currently an API, registerOperatorProcessor() which performs the
> same role. This should be adapted for use in subclasses, perhaps deprecated
> and replaced with something less brittle which doesn't require manually
> assigning operators to specific strings such as "BT" or "T*".
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