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https://issues.apache.org/jira/browse/PDFBOX-1464?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adrian Nistor updated PDFBOX-1464:
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    Attachment: patch.diff
    
> unnecessary linear searches in "CFFParser.Format0FDSelect.getFd"
> ----------------------------------------------------------------
>
>                 Key: PDFBOX-1464
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-1464
>             Project: PDFBox
>          Issue Type: Bug
>    Affects Versions: 1.7.1
>            Reporter: Adrian Nistor
>              Labels: patch, performance
>         Attachments: patch.diff
>
>
> The problem appears in PDFBox 1.7.1 and in revision 1415855.  I
> attached a small patch that fixes it.
> In method "CFFParser.Format0FDSelect.getFd", the linear search over
> the map keys "keys" is unnecessary when the "Map charString" does not
> contain the key.  The attached patch first checks if the map contains
> the key, which is a fast operation for a LinkedHashMap like
> "charString".
> Moreover, I think the linear search can be avoided altogether by
> storing the indices directly in the Map (the type of the values would
> change from byte[] to the pair <byte[],index>).

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