[jira] Resolved: (PDFBOX-601) PDFBox performance issue: PDSimpleFont, PDFont performance tweaks

["Jukka Zitting (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PDFBOX-601?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jukka Zitting resolved PDFBOX-601.
----------------------------------

    Resolution: Fixed
      Assignee: Jukka Zitting

Changes committed in revision 899472. Thanks!

> PDFBox performance issue:  PDSimpleFont, PDFont performance tweaks
> ------------------------------------------------------------------
>
>                 Key: PDFBOX-601
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-601
>             Project: PDFBox
>          Issue Type: Improvement
>          Components: PDModel
>    Affects Versions: 0.8.0-incubator
>         Environment: All
>            Reporter: Mel Martinez
>            Assignee: Jukka Zitting
>         Attachments: PDFont.java, PDFontDescriptorDictionary.java, PDSimpleFont.java
>
>
> During text extraction, font size / descriptor / encoding attributes are accessed repeatedly in order to do positional calculations and byte-character conversions.
> The current code has several accessors for these things that redo rather slow calculations each time - even thought the font object state is not changed.
> The results of these calculations should be persisted in instance fields once calculated.  This greatly improves performance.
> I'll attach new versions of PDFont, PDFontDescriptorDictionary and PDSimpleFont that have these tweaks.

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