Metacat

correction: implementation is CN-specific

implement getChecksum() in the superclass

implement getChecksum (retrieves from system metadata)

use shared get() method from superclass

use shared getLogRecords method

implement CNAuthorization

Metacat does not implement CNIdentity - it is a stand-alone service

implement registerSystemMetadata

implement object format methods - using a separate class to do the actual metacat lookup/caching so that teh CN implementation looks cleaner

Initial check in of the MNodeService stub methods that implement the D1 MN* interfaces. CrudService methods will be transitioned into this class. The methods follow the D1 0.6.2 API thus far.

Also changed CNodeService to reflect minor changes to the D1NodeService class.

Add a static getInstance() method to CNodeService and make CNodeService a singleton.

Initial check in of the CNodeService stub methods that implement the D1 CN* interfaces. CNCoreImpl methods will be transitioned into this class. The methods follow the D1 0.6.2 API thus far.