Connor Quagliana c055c459a0 Update connection logic to handle multiple connections per URI (#176) ...

* Add CancelTokenKey for uniquely identifying cancelations of Connections associated with an OwnerUri and ConnectionType string.

* Update ConnectionInfo to use ConcurrentDictionary of DbConnection instances. Add wrapper functions for the ConcurrentDictionary. 

* Refactor Connect and Disconnect in ConnectionService.

* Update ConnectionService: Handle multiple connections per ConnectionInfo. Handle cancelation tokens uniquely identified with CancelTokenKey. Add GetOrOpenConnection() for other services to request an existing or create a new DbConnection.

* Add ConnectionType.cs for ConnectionType strings.

* Add ConnectionType string to ConnectParams, ConnectionCompleteNotification, DisconnectParams.

* Update Query ExecuteInternal to use the dedicated query connection and GetOrOpenConnection().

* Update test library to account for multiple connections in ConnectionInfo.

* Write tests ensuring multiple connections don’t create redundant data.

* Write tests ensuring database changes affect all connections of a given ConnectionInfo.

* Write tests for TRANSACTION statements and temp tables.

2017-01-18 17:59:41 -08:00

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