| ISession Interface |
Each session maintains multiple connections to the cluster nodes, provides policies to choose which node to use for each query (round-robin on all nodes of the cluster by default), and handles retries for failed query (when it makes sense), etc...
Session instances are thread-safe and usually a single instance is enough per application. However, a given session can only be set to one keyspace at a time, so one instance per keyspace is necessary.
Namespace: Cassandra
Assembly: Cassandra (in Cassandra.dll) Version: 3.2.0
Syntaxpublic interface ISession : IDisposable
The ISession type exposes the following members.
Methods| Name | Description | |
|---|---|---|
 | BeginExecute(IStatement, AsyncCallback, Object) |
Begins asynchronous execute operation
|
| BeginExecute(String, ConsistencyLevel, AsyncCallback, Object) |
Begins asynchronous execute operation
|
| BeginPrepare |
Begins asynchronous prepare operation
|
| ChangeKeyspace |
Switches to the specified keyspace.
|
| CreateKeyspace |
Creates new keyspace in current cluster.
|
| CreateKeyspaceIfNotExists |
Creates new keyspace in current cluster.
If keyspace with specified name already exists, then this method does nothing.
|
| DeleteKeyspace |
Deletes specified keyspace from current cluster.
If keyspace with specified name does not exist, then exception will be thrown.
|
| DeleteKeyspaceIfExists |
Deletes specified keyspace from current cluster.
If keyspace with specified name does not exist, then this method does nothing.
|
| Dispose | Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources. (Inherited from IDisposable.) |
| EndExecute |
Ends asynchronous execute operation
|
| EndPrepare |
Ends asynchronous prepare operation
|
| Execute(String) |
Executes the provided query.
|
| Execute(IStatement) |
Executes the provided query.
|
| Execute(String, ConsistencyLevel) |
Executes the provided query.
|
| Execute(String, Int32) |
Executes the provided query.
|
| ExecuteAsync |
Executes a query asynchronously
|
| Prepare(String) |
Prepares the provided query string.
|
| Prepare(String, IDictionaryString, Byte) |
Prepares the query string, sending the custom payload request.
|
| PrepareAsync(String) |
Prepares the provided query string asynchronously.
|
| PrepareAsync(String, IDictionaryString, Byte) |
Prepares the provided query string asynchronously, and sending the custom payload request.
|
| WaitForSchemaAgreement(IPEndPoint) | Obsolete. |
| WaitForSchemaAgreement(RowSet) | Obsolete. |
Extension Methods| Name | Description | |
|---|---|---|
 | CreateBatch | (Defined by SessionExtensions.) |
| GetTableTEntity | Extension method used for backward-compatibility, use TableTEntity(ISession) constructor instead. Creates a new instance of the Linq IQueryProvider that represents a table in Cassandra using the mapping configuration provided. Fluent configuration or attributes can be used to define mapping information. |
Properties| Name | Description | |
|---|---|---|
 | BinaryProtocolVersion |
Gets the Cassandra native binary protocol version
|
| Cluster |
Gets the cluster information and state
|
| IsDisposed |
Determines if the object has been disposed.
|
| Keyspace |
Gets name of currently used keyspace.
|
| UserDefinedTypes |
Gets the user defined type mappings
|
See Also