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https://issues.apache.org/jira/browse/JCR-689?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marcel Reutegger updated JCR-689:
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Attachment: JCR-689-r492483.patch
> Minimize calls to PersistenceManager
> ------------------------------------
>
> Key: JCR-689
> URL: https://issues.apache.org/jira/browse/JCR-689
> Project: Jackrabbit
> Issue Type: Improvement
> Components: core
> Affects Versions: 0.9, 1.0, 1.0.1, 1.1, 1.1.1
> Reporter: Marcel Reutegger
> Priority: Minor
> Fix For: 1.3
>
> Attachments: JCR-689-r492483.patch, NodeImpl-485720.patch
>
>
> In some situations the PersistenceManager is called even though it is not
> necessary.
> E.g. when new items are created the method NodeImpl.getOrCreateProperty()
> will always check if there is an already existing property state. If the node
> is new the call will always go down the full item state stack and ask the
> PersistenceManager if it knows the property id. This is unnessessary because
> there will never exist properties in the persistence manager for a new node
> that has not been saved yet.
> I propose to add a check to the method to see if the node is new and does
> not yet have a property with the given name. In that case the property can be
> created without further checks.
> With the patch applied the time to transiently create 1000 nodes with 4
> properties each drops from 1485 ms to 422 ms.
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