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Key: NUCCORE-130
Type: New Feature New Feature
Status: Open Open
Priority: Major Major
Assignee: Unassigned
Reporter: Andy Jefferson
Votes: 0
Watchers: 0
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DataNucleus Core

DataFederation : Definition of persistence and retrieval of objects from federated datastores

Created: 10/Oct/08 02:35 PM   Updated: 19/May/14 07:42 PM
Component/s: Datastore Support
Affects Version/s: None
Fix Version/s: None

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Once the user has defined which datastores are federated for this PMF/EMF and which classes/objects are persisted into which datastore, then we need to produce the logic for handing off persistence and retrieval to the correct StoreManager

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Andy Jefferson added a comment - 30/Jan/11 08:45 AM
We need to update QueryManager to allow for federation. The StoreManager needs to returns the Query object (instead of QueryManager currently), so then FederatedStoreManager can pass a query object that will handle the federation of query results.

Andy Jefferson added a comment - 05/Aug/12 04:00 PM
Also need to take into account that the secondary datastore name is lowercased during the persistence property read, so need to do case-insensitive search for datastore name

Andy Jefferson added a comment - 15/May/14 09:08 AM - edited
Similarly need to update wrapper classes to get hold of the actual StoreManager for the object, maybe via a method on ObjectProvider which goes via ExecutionContext and if we have FederatedStoreManager then gets the right one - this is now done.