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Date: Wed, 18 Apr 2007 23:39:15 -0700 (PDT)
From: "Jukka Zitting (JIRA)" <jira@apache.org>
To: dev@jackrabbit.apache.org
Subject: [jira] Commented: (JCR-851) Handling of binary properties (streams)
 in QValue interface
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    [ https://issues.apache.org/jira/browse/JCR-851?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12489942 ] 

Jukka Zitting commented on JCR-851:
-----------------------------------

> > The most usual (only?) reason for a client to create QValues is when the client wants to
> > store content in the repository
>
> is probably not totally correct, isn't it? i was told recently that almost everything was reading :) 

Note the part "for a client". The SPI implementation obviously creates QValues whenever content is read, but I don't believe that is a problem in this case.

> 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
>
> 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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