Keith Wall created QPID-5802:
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             Summary: Introduce hierarchy of virtual host types
                 Key: QPID-5802
                 URL: https://issues.apache.org/jira/browse/QPID-5802
             Project: Qpid
          Issue Type: Improvement
          Components: Java Broker
            Reporter: Keith Wall


Currently, a MessageStore implementation is plugged into a Virtualhost in order 
for the virtual host to be backed by different types of storage (BDB, Derby, 
JDBC etc).

This presents a problem for management. Different store types require different 
sets of configuration properties (file system paths/urls/password etc) but as 
these are properties of the store, and the store is not a member of the model, 
we have no way to expose these as attributes for configuration via the 
management interfaces.

It has been decided to introduce a hierarchy of VH types with the VirtualHost 
category:

* BDB
* JDBC
* DERBY
* BDB HA
* Provided

Each type will be tied to its corresponding store.  Each type can expose any 
attribute that the underlying store requires.

Going forward, the extension point will be Virtualhost, rather than 
MessageStore.













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