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From "Stefan Guggisberg (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (OAK-142) MicroKernel API: returning the :hash property should be optional
Date Fri, 15 Jun 2012 14:46:42 GMT

     [ https://issues.apache.org/jira/browse/OAK-142?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Stefan Guggisberg updated OAK-142:
----------------------------------

    Summary: MicroKernel API: returning the :hash property should be optional  (was: MicroKernel
API: returning the :hash should be optional)
    
> MicroKernel API: returning the :hash property should be optional
> ----------------------------------------------------------------
>
>                 Key: OAK-142
>                 URL: https://issues.apache.org/jira/browse/OAK-142
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>            Reporter: Stefan Guggisberg
>
> the {{:hash}} property represents the content hash of node tree rooted at the property's
parent node. 
> the {{:hash}} property is by default not included in the json tree returned by the {{getNodes(..)}}
method but can be enabled by explicitly specifying it in the {{filter}} parameter.
> returning the {{:hash}} property should be optional since it might be a too heavy requirement
on some MicroKernel implementations. an implementation might e.g. choose to include the {{:hash}}
property only on certain nodes or it might choose to not support it at all.
> if however a {{:hash}} property is returned it has to obey the content hash contract,
i.e. identical node trees must have identical {{:hash}} values and non-identical node trees
must have different {{:hash}} values.

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