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https://issues.apache.org/jira/browse/TIKA-775?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13147339#comment-13147339
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Jukka Zitting commented on TIKA-775:
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I'd like to have a concrete use case for introducing a new concept like this.
What exact need are you addressing? Also, are there other existing tools that
could be used instead of coming up with a new API. This seems like a pretty
significant new feature, so it would be best if we did it right from the
beginning.
Design-wise it would be better for the embed() method to write it's results to
an OutputStream given as an argument (just like the Parser interface takes a
ContentHandler argument). Returning an InputStream brings up all sorts of
issues about timing, error reporting, etc.
> Embed Capabilities
> ------------------
>
> Key: TIKA-775
> URL: https://issues.apache.org/jira/browse/TIKA-775
> Project: Tika
> Issue Type: Improvement
> Components: general, metadata
> Affects Versions: 1.0
> Environment: The default ExternalEmbedder requires that sed be
> installed.
> Reporter: Ray Gauss II
> Labels: embed, patch
> Fix For: 1.1
>
> Attachments: tika-core-embed-patch.txt, tika-parsers-embed-patch.txt
>
>
> This patch defines and implements the concept of embedding tika metadata into
> a file stream, the reverse of extraction.
> In the tika-core project an interface defining an Embedder and a generic sed
> ExternalEmbedder implementation meant to be extended or configured are added.
> These classes are essentially a reverse flow of the existing Parser and
> ExternalParser classes.
> In the tika-parsers project an ExternalEmbedderTest unit test is added which
> uses the default ExternalEmbedder (calls sed) to embed a value placed in
> Metadata.DESCRIPTION then verify the operation by parsing the resulting
> stream.
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