Hi Vipul,
I saw the same issue when trying to expose an embedded Neo4j database
(plus some other things) via a Spring webapp.
*"Caused by: java.lang.IllegalStateException: Unable to lock store
[\neo4j\db\project\graph-project\neostore], this is usually a result of
some other Neo4j kernel** running using the same store." *
The problem was that I was trying to instantiate the
GraphDatabaseService from two components with a new().
I ended up building a factory that instantiates a singleton and returns
a reference to the same GraphDatabaseService using a getInstance()
method to all the components that need a handle to it.
In my spring config I declare the bean containing the
GraphDatabaseService (nodeService) like so:
<bean id="nodeService" class="...NodeServiceFactory"
factory-method="getInstance" destroy-method="destroy"/>
where the NodeServiceFactory exposes 2 static methods getInstance() that
returns the singleton reference and destroy which closes the reference
on application shutdown.
In the app, where I was doing a nodeService = new NodeService(), I
replaced with nodeService = NodeService.getInstance().
-sujit
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