Session: How to Get Entity Change-Vector
- The change-vector reflects the cluster-wide point in time in which a change occured, and
includes the unique database ID, node identifier, and document Etag in the specific node.
- When a document is downloaded from the server, it contains various metadata information.
E.g. ID or current change-vector.
- The current change-vector is stored within the session metadata and is available for each
entity using the
GetChangeVectorFor
method from the Advanced
session operations.
Syntax
string GetChangeVectorFor<T>(T instance);
Parameters |
|
|
instance |
T |
Instance of an entity for which an Etag will be returned. |
Return Value |
|
string |
Returns the current change-vector for an entity. Throws an exception if the instance is not tracked by the session. |
Example
Employee employee = session.Load<Employee>("employees/1-A");
string changeVector = session.Advanced.GetChangeVectorFor(employee);