[jboss-jira] [JBoss JIRA] Created: (JBCACHE-961) Optimistic locking to support more sophisticated merging of child maps

[Manik Surtani (JIRA)]

Optimistic locking to support more sophisticated merging of child maps
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                 Key: JBCACHE-961
                 URL: http://jira.jboss.com/jira/browse/JBCACHE-961
             Project: JBoss Cache
          Issue Type: Feature Request
      Security Level: Public (Everyone can see)
    Affects Versions: 1.4.1.GA
            Reporter: Manik Surtani
         Assigned To: Manik Surtani
             Fix For: 2.0.0.BETA2, 2.0.0.GA


At the moment at commit time parent nodes in a workspace have their child maps used to overwrite the underlying data nodes.  As such, version increments are necessary on the parents, very bad for concurrency.

A more sophisticated merging mechanism is needed here, perhaps along the lines of:

1)  Children added placed in an addedChildren map
2)  Children removed placed in a childrenRemoved map

at commit time, use these 2 maps to look at what exists in the underlying node and merge in accordingly.

Related to JBCACHE-955 and JBCACHE-956.


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