[jira] [Updated] (TIKA-1420) Add Metadata Extraction to Arbitrary Parsers

["Lewis John McGibbney (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TIKA-1420?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lewis John McGibbney updated TIKA-1420:
---------------------------------------
    Labels: memex  (was: )

> Add Metadata Extraction to Arbitrary Parsers
> --------------------------------------------
>
>                 Key: TIKA-1420
>                 URL: https://issues.apache.org/jira/browse/TIKA-1420
>             Project: Tika
>          Issue Type: Improvement
>          Components: parser
>            Reporter: Tyler Palsulich
>            Assignee: Tyler Palsulich
>            Priority: Minor
>              Labels: memex
>             Fix For: 1.7
>
>
> Suppose you wish to extract information from arbitrary file types and add it to a Metadata Object. This type of task is best handled by a... Handler. But, Handlers do not have access to the Metadata Object passed to a Parser. 
> So, I see a few ways we could do using existing functionality.
> 1) Make an intermediate XML representation of the desired metadata in a handler, then convert the XML to the Metadata after parsing. 
> 2) Create a second Parser which extracts the desired information.
>      a) Assume the Handler passed to this Parser is already filled with content. So, we could simply get whatever content from the Handler and populate the Metadata directly.
>      b) Create a new Stream in the first Parser to pass to the second, which in turn populates the Metadata.
> None of these options seem ideal. Is there a better way to handle this scenario? Or, can we create some sort of... wrapper for a Handler which can accept a Metadata Object to populate directly? 



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