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https://issues.apache.org/jira/browse/PDFBOX-191?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jukka Zitting resolved PDFBOX-191.
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Resolution: Duplicate
This has already been fixed as a part of some other issue.
> PDFStreamEngine(Properties) should use propertyNames()
> ------------------------------------------------------
>
> Key: PDFBOX-191
> URL: https://issues.apache.org/jira/browse/PDFBOX-191
> Project: PDFBox
> Issue Type: Bug
> Priority: Minor
>
> [imported from SourceForge]
> http://sourceforge.net/tracker/index.php?group_id=78314&atid=552832&aid=1544943
> Originally submitted by thib_gc on 2006-08-22 15:40.
> The PDFStreamEngine(Properties) constructor uses
> properties.keySet().iterator() to create a map of
> operators based on the client-supplied custom operator
> processor class names. This has the disadvantage of
> only iterating over the proper keys of the properties
> parameter, ignoring any keys that are defined by the
> Properties instance's defaults (if present).
> If a client of PDFStreamEngine wishes to have the
> default behavior be anything other than the built-in
> "no-op", which exists because of the null check in
> processOperator(PDFOperator, List), the only choice is
> to supply to the constructor a Properties object with
> no defaults that includes all possible PDF operators,
> attaching the name of a class extending
> OperatorProcessor with the desired default behavior to
> all keys that need it. Another conceivable possibility
> would be to override PDFStreamEngine(Properties) and
> processOperator(PDFOperator, List).
> Neither of these options seem desirable, nor do they
> enable clients to take advantage of defaults
> recursively in Properties without flattening the
> chained Properties objects.
> Instead, the PDFStreamEngine(Properties) constructor
> could use properties.propertyNames() (the die-hard
> Enumeration from the Properties API), which guarantees
> enumerating recursively over Properties objects.
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