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From "angela (JIRA)" <j...@apache.org>
Subject [jira] Commented: (JCR-1200) allow SPI implementation to compute default values for autocreated properties
Date Wed, 31 Oct 2007 16:01:50 GMT

    [ https://issues.apache.org/jira/browse/JCR-1200?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12539110
] 

angela commented on JCR-1200:
-----------------------------

> In which case I'd prefer the latter in order to avoid confusion with the other create
methods.

ok. the 'from' is may be not totally accurate either. i liked your 'compute' but i wasn't
too happy with
the default-value... because the default value is something different and it's already 
present in the property definition, isn't it ? there is no need to compute that one... 

is it meant to be used for both retrieved default-values AND autocreated values?
then it would probably be

 computeValues.

i guess we should also define the behaviour of the method if the QPropertyDefinition
does neither define defaultvalues nor is autocreated... throwing?

> allow SPI implementation to compute default values for autocreated properties
> -----------------------------------------------------------------------------
>
>                 Key: JCR-1200
>                 URL: https://issues.apache.org/jira/browse/JCR-1200
>             Project: Jackrabbit
>          Issue Type: Improvement
>          Components: SPI
>            Reporter: Julian Reschke
>            Assignee: Julian Reschke
>            Priority: Minor
>
> Currently, when creating nodes in transient space, JCR2SPI uses hard-wired logic trying
to populate system generated properties such as jcr:created, jcr;uuid and so on.
> This is problematic as
> - it doesn't scale -- it fails for autocreated properties not known to JCR2SPI, and
> - the syntax for the defaults may be dependant on the back end, such as legal syntax
for (UU)IDs.
> Proposal:
> - extend QValueFactory with something like
>   QValue computeDefaultValue(QPropertyDefinition)
> - use that in JCR2SPI, getting rid of the currently hard-wired logic.

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