BUG-509: remove unnecessary Version objects 15/7515/2
authorRobert Varga <rovarga@cisco.com>
Wed, 28 May 2014 22:02:17 +0000 (00:02 +0200)
committerRobert Varga <rovarga@cisco.com>
Thu, 29 May 2014 14:51:24 +0000 (16:51 +0200)
commitc78ba1f70be123609b88f43ce40f8555f1bc2ec7
tree654f6954a14d8d668269691bc920161aff41d476
parenta5cc12f729f44ca0a5f8b7cb2e6912fdffe12e10
BUG-509: remove unnecessary Version objects

Testing has revealed the datastore instantiates effectively a version
per tree node. This turns out to be not needed, as we really just need a
single version per commit -- which can be shared between nodes, as the
(node,version) tuple remains unique.

So let's just instantiate a single version when we start the
transaction, which we need to do anyway, and use it for all
nodes/subtrees added or modified. This places an upper bound on Version
objects retained to the number of transactions committed (not counting
no-ops).

Change-Id: I40d095ec230eee8b5af2409c1e8ee61a1860a9d3
Signed-off-by: Robert Varga <rovarga@cisco.com>
opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/tree/data/AlwaysFailOperation.java
opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/tree/data/ModificationApplyOperation.java
opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/tree/data/NormalizedNodeContainerModificationStrategy.java
opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/tree/data/OperationWithModification.java
opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/tree/data/SchemaAwareApplyOperation.java
opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/tree/data/ValueNodeModificationStrategy.java

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