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https://issues.apache.org/jira/browse/JCR-851?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12509517
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Jukka Zitting commented on JCR-851:
-----------------------------------
Some background on the patch above. We discussed this issue with Marcel,
Angela, and Julian, and it seems like the best way to manage binary streams is
to use some sort of a binary handle (a temporary file or a reference to the
backend store) instead of the live InputStream reference.
> Handling of binary properties (streams) in QValue interface
> -----------------------------------------------------------
>
> Key: JCR-851
> URL: https://issues.apache.org/jira/browse/JCR-851
> Project: Jackrabbit
> Issue Type: Improvement
> Components: SPI
> Reporter: Julian Reschke
> Attachments: QValue.patch
>
>
> The current SPI requires QValue to return new streams upon each call to
> getStream(). As far as I can tell, this essentially requires a QValue
> implementation to preserve the whole content of a stream, be it in memory or
> on disk.
> In particular (and unless I'm missing something), when importing large
> content into a repository, this causes the whole data stream to be written
> twice. We really should try to avoid that.
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