• DataStax C# Driver for Apache Cassandra API Documentation
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    • Cassandra
      • AesColumnEncryptionPolicy
      • AesColumnEncryptionPolicy.AesKeyAndIV
      • AggregateMetadata
      • AlreadyExistsException
      • AtomicMonotonicTimestampGenerator
      • AtomicMonotonicWinApiTimestampGenerator
      • AuthenticationException
      • BaseColumnEncryptionPolicy<TKey>
      • BaseColumnEncryptionPolicy<TKey>.ColMetadataKey
      • BatchStatement
      • BatchType
      • BigIntegerTypeAdapter
      • BoundStatement
      • Builder
      • BusyPoolException
      • CassandraConnectionStringBuilder
      • ClientOptions
      • Cluster
      • ColumnDesc
      • ColumnEncryptionInvalidTypeError
      • ColumnEncryptionMetadata
      • ColumnTypeCode
      • CompressionType
      • Configuration
      • ConsistencyLevel
      • ConstantReconnectionPolicy
      • ConstantSpeculativeExecutionPolicy
      • CqlColumn
      • CqlVector<T>
      • CustomColumnInfo
      • DCAwareRoundRobinPolicy
      • DataCollectionMetadata
      • DataCollectionMetadata.SortOrder
      • DecimalTypeAdapter
      • DefaultLoadBalancingPolicy
      • DefaultRetryPolicy
      • Diagnostics
      • DowngradingConsistencyRetryPolicy
      • DriverException
      • DriverInternalError
      • Duration
      • DynamicCompositeTypeAdapter
      • EC2MultiRegionTranslator
      • EncryptedValue
      • ExecutionException
      • ExecutionInfo
      • ExponentialReconnectionPolicy
      • Extensions
      • FallthroughRetryPolicy
      • FixedReconnectionPolicy
      • FunctionFailureException
      • FunctionMetadata
      • GraphProtocol
      • Host
      • HostDistance
      • HostsEventArgs
      • HostsEventArgs.Kind
      • HostsEventHandler
      • IAddressTranslator
      • IAuthProvider
      • IAuthenticator
      • ICluster
      • IColumnEncryptionPolicy
      • IColumnInfo
      • IExecutionProfile
      • IExecutionProfileBuilder
      • IExecutionProfileOptions
      • IExtendedRetryPolicy
      • IFrameCompressor
      • IInitializer
      • ILoadBalancingPolicy
      • IReconnectionPolicy
      • IReconnectionSchedule
      • IRequestTracker
      • IRetryPolicy
      • ISession
      • ISessionState
      • ISpeculativeExecutionPlan
      • ISpeculativeExecutionPolicy
      • IStatement
      • ITimestampGenerator
      • ITypeAdapter
      • IdempotenceAwareRetryPolicy
      • IndexMetadata
      • IndexMetadata.IndexKind
      • InitFatalErrorException
      • InvalidConfigurationInQueryException
      • InvalidQueryException
      • InvalidTypeException
      • IsBootstrappingException
      • KeyType
      • KeyspaceMetadata
      • ListColumnInfo
      • LocalDate
      • LocalTime
      • Logger
      • LoggingRetryPolicy
      • MapColumnInfo
      • MaterializedViewMetadata
      • Metadata
      • MetadataSyncOptions
      • MetricsExtensions
      • MonitorReportingOptions
      • NoHostAvailableException
      • NoSpeculativeExecutionPolicy
      • NodeRequestInfo
      • NoneAuthProvider
      • NullTypeAdapter
      • OperationTimedOutException
      • OverloadedException
      • PlainTextAuthProvider
      • Policies
      • PoolingOptions
      • PrepareRequest
      • PreparedQueryNotFoundException
      • PreparedStatement
      • PreparedStatementIdMismatchException
      • ProtocolErrorException
      • ProtocolOptions
      • ProtocolVersion
      • QueryExecutionException
      • QueryOptions
      • QueryProtocolOptions
      • QueryProtocolOptions.QueryFlags
      • QueryTimeoutException
      • QueryTrace
      • QueryTrace.Event
      • QueryValidationException
      • ReadFailureException
      • ReadTimeoutException
      • RegularStatement
      • ReplicationStrategies
      • RequestInvalidException
      • RetryDecision
      • RetryDecision.RetryDecisionType
      • RetryLoadBalancingPolicy
      • RetryLoadBalancingPolicyEventArgs
      • RoundRobinPolicy
      • RoutingKey
      • Row
      • RowSet
      • RowSetMetadata
      • SSLOptions
      • SchemaChangedEventArgs
      • SchemaChangedEventArgs.Kind
      • SchemaChangedEventHandler
      • ServerErrorException
      • Session
      • SessionRequestInfo
      • SetColumnInfo
      • SimpleStatement
      • SocketOptions
      • Statement
      • SyntaxError
      • TableColumn
      • TableMetadata
      • TableOptions
      • TimeUuid
      • ToManyConnectionsPerHost
      • TokenAwarePolicy
      • TraceRetrievalException
      • TruncateException
      • TupleColumnInfo
      • TypeAdapters
      • UdtColumnInfo
      • UdtMap
      • UdtMap<T>
      • UdtMappingDefinitions
      • UnauthorizedException
      • UnavailableException
      • Unset
      • VectorColumnInfo
      • WriteFailureException
      • WriteTimeoutException
    • Cassandra.AppMetrics
      • DriverAppMetricsOptions
    • Cassandra.AppMetrics.MetricTypes
      • IAppMetricsCounter
      • IAppMetricsGauge
      • IAppMetricsMeter
      • IAppMetricsMetric
      • IAppMetricsTimer
    • Cassandra.AppMetrics.MetricValues
      • IAppMetricsHistogramValue
      • IAppMetricsMeterValue
      • IAppMetricsMetricWithValue<T>
      • IAppMetricsTimerValue
    • Cassandra.Data
      • CqlBatchTransaction
      • CqlCommand
      • CqlConnection
      • CqlDataAdapter
      • CqlParameter
      • CqlParameterCollection
      • CqlProviderFactory
      • CqlReader
    • Cassandra.Data.Linq
      • AllowFilteringAttribute
      • Batch
      • ClusteringKeyAttribute
      • ColumnAttribute
      • CompactStorageAttribute
      • CounterAttribute
      • CqlArgumentException
      • CqlCommand
      • CqlConditionalCommand<TEntity>
      • CqlDelete
      • CqlFunction
      • CqlInsert<TEntity>
      • CqlLinqNotSupportedException
      • CqlOperator
      • CqlQueryBase<TEntity>
      • CqlQueryExtensions
      • CqlQuerySingleElement<TEntity>
      • CqlQuery<TEntity>
      • CqlScalar<TEntity>
      • CqlToken
      • CqlUpdate
      • ITable
      • IgnoreAttribute
      • PartitionKeyAttribute
      • SecondaryIndexAttribute
      • SessionExtensions
      • StaticColumnAttribute
      • TableAttribute
      • TableType
      • Table<TEntity>
    • Cassandra.DataStax.Auth
      • DseGssapiAuthProvider
      • DsePlainTextAuthProvider
    • Cassandra.DataStax.Auth.Sspi
      • SspiException
    • Cassandra.DataStax.Graph
      • Direction
      • Edge
      • Element
      • ElementMap
      • EnumWrapper
      • FluentGraphStatement
      • GraphNode
      • GraphOptions
      • GraphResultSet
      • GraphStatement
      • IEdge
      • IElement
      • IGraphNode
      • IGraphStatement
      • IPath
      • IProperty
      • IPropertyWithElement
      • IVertex
      • IVertexProperty
      • Path
      • SimpleGraphStatement
      • TEnum
      • Traverser
      • Vertex
    • Cassandra.DataStax.Graph.Internal
      • IGraphSONDeserializer
      • IGraphSONReader
      • IGraphSONSerializer
      • IGraphSONWriter
    • Cassandra.DataStax.Search
      • DateRange
      • DateRangeBound
      • DateRangePrecision
    • Cassandra.Geometry
      • GeometryBase
      • LineString
      • Point
      • Polygon
    • Cassandra.Mapping
      • AppliedInfo<T>
      • ColumnMap
      • Cql
      • CqlQueryOptions
      • IColumnDefinition
      • ICqlBatch
      • ICqlQueryAsyncClient
      • ICqlQueryClient
      • ICqlWriteAsyncClient
      • ICqlWriteClient
      • IMapper
      • IPage<T>
      • ITypeDefinition
      • Map<TPoco>
      • Mapper
      • MappingConfiguration
      • Mappings
      • PrimaryKeyAttribute
      • SortOrder
      • TableNameAttribute
    • Cassandra.Mapping.Attributes
      • ClusteringKeyAttribute
      • ColumnAttribute
      • CounterAttribute
      • FrozenAttribute
      • FrozenKeyAttribute
      • FrozenValueAttribute
      • IgnoreAttribute
      • PartitionKeyAttribute
      • SecondaryIndexAttribute
      • StaticColumnAttribute
      • TableAttribute
    • Cassandra.Mapping.TypeConversion
      • DefaultTypeConverter
      • EnumStringMapper<T>
      • NullableEnumStringMapper<T>
      • TypeConverter
    • Cassandra.Mapping.Utils
      • MemberInfoExtensions
    • Cassandra.Metrics
      • DriverMetricsOptions
      • IDriverMetrics
      • IMetric
      • IMetricsRegistry<TMetric>
      • NodeMetric
      • NodeMetric.Counters
      • NodeMetric.Gauges
      • NodeMetric.Meters
      • NodeMetric.Timers
      • SessionMetric
      • SessionMetric.Counters
      • SessionMetric.Gauges
      • SessionMetric.Meters
      • SessionMetric.Timers
    • Cassandra.Metrics.Abstractions
      • IDriverCounter
      • IDriverGauge
      • IDriverMeter
      • IDriverMetric
      • IDriverMetricsProvider
      • IDriverTimer
    • Cassandra.OpenTelemetry
      • BuilderExtensions
      • CassandraActivitySourceHelper
      • CassandraInstrumentationOptions
      • OpenTelemetryRequestTracker
    • Cassandra.Serialization
      • CustomTypeSerializer<T>
      • TypeSerializer
      • TypeSerializerDefinitions
      • TypeSerializer<T>
      • UdtSerializer
    • Cassandra.Serialization.Primitive
      • DecimalSerializer

    Class Extensions

    Provides C# extension methods for interfaces and classes within the root namespace. Used to introduce new methods on interfaces without making it a breaking change for the users.

    Inheritance
    object
    Extensions
    Inherited Members
    object.Equals(object)
    object.Equals(object, object)
    object.GetHashCode()
    object.GetType()
    object.MemberwiseClone()
    object.ReferenceEquals(object, object)
    object.ToString()
    Namespace: Cassandra
    Assembly: Cassandra.dll
    Syntax
    public static class Extensions

    Methods

    AsCqlVector<T>(T[])

    Creates a new vector with the provided array. No copy is made. Equivalent to using New(T[]) or CqlVector(params T[])/>

    Declaration
    public static CqlVector<T> AsCqlVector<T>(this T[] array)
    Parameters
    Type Name Description
    T[] array
    Returns
    Type Description
    CqlVector<T>
    Type Parameters
    Name Description
    T

    GetState(ISession)

    Gets a snapshot containing information on the connections pools held by this Client at the current time.

    The information provided in the returned object only represents the state at the moment this method was called and it's not maintained in sync with the driver metadata.

    Declaration
    public static ISessionState GetState(this ISession instance)
    Parameters
    Type Name Description
    ISession instance
    Returns
    Type Description
    ISessionState

    ToCqlVector<T>(IEnumerable<T>)

    Creates a new vector after copying the provided enumerable. Equivalent to:

    new CqlVector<int>(enumerable.ToArray());
    // or
    CqlVector<int>.New(enumerable.ToArray());
    Declaration
    public static CqlVector<T> ToCqlVector<T>(IEnumerable<T> enumerable)
    Parameters
    Type Name Description
    IEnumerable<T> enumerable
    Returns
    Type Description
    CqlVector<T>
    Type Parameters
    Name Description
    T
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