protected Parser.parse(InputStream stream, Iterable<Content> contents)
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                 Key: TIKA-31
                 URL: https://issues.apache.org/jira/browse/TIKA-31
             Project: Tika
          Issue Type: Improvement
          Components: general
            Reporter: Jukka Zitting
            Assignee: Jukka Zitting


In order to push towards a stateless Parser interface, I'd like to propose 
implementing the current Parser.getContents() method (as it exists after 
TIKA-26) in terms of a stateless abstract method with the following signature:

    protected abstract String parse(InputStream stream, Iterable<Content> 
contents) throws IOException, TikaException;

This method would return the fulltext content of the given stream as the String 
return value and place any extra metadata into the given set of Content 
instances. With this information the current Parser.getContents() method could 
populate a fulltext (and summary) Content entry and any regexp Content entries 
universally for any Parser classes. Also, we could centralize state handling 
and exception processing to a single class.

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