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From "Matt Ryan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (OAK-8186) Create API in OAK for file access to binaries in the repository.
Date Tue, 02 Apr 2019 22:55:00 GMT

    [ https://issues.apache.org/jira/browse/OAK-8186?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16808214#comment-16808214
] 

Matt Ryan commented on OAK-8186:
--------------------------------

[~mduerig] yes, on the surface it seems like it could be similar.

[~hsaginor@gmail.com], thanks for the suggestion.  Will you please describe the use case you
are trying to address?  This will help in evaluating what it is you want to accomplish and
what capabilities are actually needed.  You mentioned https://wiki.apache.org/jackrabbit/JCR%20Binary%20Usecase;
if the use case you have in mind is in that document, will you please identify specifically
which one so we know which we are talking about?

> Create API in OAK for file access to binaries in the repository.
> ----------------------------------------------------------------
>
>                 Key: OAK-8186
>                 URL: https://issues.apache.org/jira/browse/OAK-8186
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>            Reporter: Henry Saginor
>            Priority: Major
>         Attachments: OAK File Access.jpg
>
>
> To get file access applications normally write binaries to temp files. It would be nice
if an API existed to get file access directly from OAK. This might also meet some use cases
documented at [https://wiki.apache.org/jackrabbit/JCR%20Binary%20Usecase]
> Suggested API and implementation can be found here [1]. Also, see attached diagram [2].
> I can create a patch if I can get some feedback. Note that suggested API makes it explicit
that a temp file is created. I am not sure if direct access to files in datasore would be
safe. But I am open to suggestions.
> [1]
>  [https://github.com/hsaginor/jackrabbit-oak/blob/directFileAccess/oak-api/src/main/java/org/apache/jackrabbit/oak/api/blob/FileReferencable.java]
>  [https://github.com/hsaginor/jackrabbit-oak/blob/directFileAccess/oak-api/src/main/java/org/apache/jackrabbit/oak/api/blob/TempFileReference.java]
>  [https://github.com/hsaginor/jackrabbit-oak/blob/directFileAccess/oak-api/src/main/java/org/apache/jackrabbit/oak/api/blob/TempFileReferenceProvider.java]
>  [https://github.com/hsaginor/jackrabbit-oak/blob/directFileAccess/oak-blob-plugins/src/main/java/org/apache/jackrabbit/oak/plugins/blob/datastore/FileDSBlobTempFileReference.java]
>  [https://github.com/hsaginor/jackrabbit-oak/blob/directFileAccess/oak-blob-plugins/src/main/java/org/apache/jackrabbit/oak/plugins/blob/datastore/DataStoreBlobStore.java]
>  [https://github.com/hsaginor/jackrabbit-oak/blob/directFileAccess/oak-segment-tar/src/main/java/org/apache/jackrabbit/oak/segment/SegmentBlob.java]
>  [https://github.com/hsaginor/jackrabbit-oak/blob/directFileAccess/oak-store-spi/src/main/java/org/apache/jackrabbit/oak/plugins/value/jcr/BinaryImpl.java]
> [2]
> !OAK File Access.jpg!



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