• 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 Builder

    Helper class to build Cluster instances.

    Inheritance
    object
    Builder
    Implements
    IInitializer
    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 class Builder : IInitializer

    Constructors

    Builder()

    Declaration
    public Builder()

    Fields

    DefaultApplicationName

    Declaration
    public const string DefaultApplicationName = "Default .NET Application"
    Field Value
    Type Description
    string

    Properties

    ApplicationName

    The name of the application using the created cluster instance.

    Declaration
    public string ApplicationName { get; }
    Property Value
    Type Description
    string

    ApplicationVersion

    The version of the application using the created cluster instance.

    Declaration
    public string ApplicationVersion { get; }
    Property Value
    Type Description
    string

    ClusterId

    A unique identifier for the created cluster instance.

    Declaration
    public Guid? ClusterId { get; }
    Property Value
    Type Description
    Guid?

    ContactPoints

    Gets the contact points that were added as IPEndPoint" instances.

    Note that only contact points that were added using AddContactPoint(IPEndPoint) and AddContactPoints(params IPEndPoint[]) are returned by this property, as IP addresses and host names must be resolved and assigned the port number, which is performed on Build().

    Declaration
    public ICollection<IPEndPoint> ContactPoints { get; }
    Property Value
    Type Description
    ICollection<IPEndPoint>

    GraphOptions

    Gets the DSE Graph options.

    Declaration
    public GraphOptions GraphOptions { get; }
    Property Value
    Type Description
    GraphOptions

    PoolingOptions

    The pooling options used by this builder.

    Declaration
    public PoolingOptions PoolingOptions { get; }
    Property Value
    Type Description
    PoolingOptions

    the pooling options that will be used by this builder. You can use the returned object to define the initial pooling options for the built cluster.

    SocketOptions

    The socket options used by this builder.

    Declaration
    public SocketOptions SocketOptions { get; }
    Property Value
    Type Description
    SocketOptions

    the socket options that will be used by this builder. You can use the returned object to define the initial socket options for the built cluster.

    Methods

    AddContactPoint(IPAddress)

    Add contact point. See AddContactPoint(string) for more details on contact points.

    Declaration
    public Builder AddContactPoint(IPAddress address)
    Parameters
    Type Name Description
    IPAddress address

    address of the node to add as contact point

    Returns
    Type Description
    Builder

    this Builder

    AddContactPoint(IPEndPoint)

    Add contact point. See AddContactPoint(string) for more details on contact points.

    Declaration
    public Builder AddContactPoint(IPEndPoint address)
    Parameters
    Type Name Description
    IPEndPoint address

    address of the node to add as contact point

    Returns
    Type Description
    Builder

    this Builder

    AddContactPoint(string)

    Adds a contact point. Contact points are addresses of Cassandra nodes that the driver uses to discover the cluster topology. Only one contact point is required (the driver will retrieve the address of the other nodes automatically), but it is usually a good idea to provide more than one contact point, as if that unique contact point is not available, the driver won't be able to initialize itself correctly.

    Declaration
    public Builder AddContactPoint(string address)
    Parameters
    Type Name Description
    string address

    the address of the node to connect to

    Returns
    Type Description
    Builder

    this Builder

    Remarks

    However, this can be useful if the Cassandra nodes are behind a router and are not accessed directly. Note that if you are in this situation (Cassandra nodes are behind a router, not directly accessible), you almost surely want to provide a specific IAddressTranslator (through Builder.WithAddressTranslater) to translate actual Cassandra node addresses to the addresses the driver should use, otherwise the driver will not be able to auto-detect new nodes (and will generally not function optimally).

    AddContactPoints(IEnumerable<IPAddress>)

    Add contact points. See Builder.AddContactPoint for more details on contact points.

    Declaration
    public Builder AddContactPoints(IEnumerable<IPAddress> addresses)
    Parameters
    Type Name Description
    IEnumerable<IPAddress> addresses

    addresses of the nodes to add as contact point

    Returns
    Type Description
    Builder

    this Builder

    AddContactPoints(IEnumerable<IPEndPoint>)

    Add contact points. See Builder.AddContactPoint for more details on contact points.

    Declaration
    public Builder AddContactPoints(IEnumerable<IPEndPoint> addresses)
    Parameters
    Type Name Description
    IEnumerable<IPEndPoint> addresses

    addresses of the nodes to add as contact point

    Returns
    Type Description
    Builder

    this Builder

    AddContactPoints(IEnumerable<string>)

    Add contact points. See Builder.AddContactPoint for more details on contact points.

    Declaration
    public Builder AddContactPoints(IEnumerable<string> addresses)
    Parameters
    Type Name Description
    IEnumerable<string> addresses

    addresses of the nodes to add as contact point

    Returns
    Type Description
    Builder

    this Builder

    AddContactPoints(params IPAddress[])

    Add contact points. See Builder.AddContactPoint for more details on contact points.

    Declaration
    public Builder AddContactPoints(params IPAddress[] addresses)
    Parameters
    Type Name Description
    IPAddress[] addresses

    addresses of the nodes to add as contact point

    Returns
    Type Description
    Builder

    this Builder

    AddContactPoints(params IPEndPoint[])

    Add contact points. See Builder.AddContactPoint for more details on contact points.

    Declaration
    public Builder AddContactPoints(params IPEndPoint[] addresses)
    Parameters
    Type Name Description
    IPEndPoint[] addresses

    addresses of the nodes to add as contact point

    Returns
    Type Description
    Builder

    this Builder

    AddContactPoints(params string[])

    Add contact points. See AddContactPoint(string) for more details on contact points.

    Declaration
    public Builder AddContactPoints(params string[] addresses)
    Parameters
    Type Name Description
    string[] addresses

    addresses of the nodes to add as contact point

    Returns
    Type Description
    Builder

    this Builder

    Build()

    Build the cluster with the configured set of initial contact points and policies.

    Declaration
    public Cluster Build()
    Returns
    Type Description
    Cluster

    the newly build Cluster instance.

    Exceptions
    Type Condition
    NoHostAvailableException

    Throws a NoHostAvailableException when no host could be resolved.

    ArgumentException

    Throws an ArgumentException when no contact point was provided.

    GetConfiguration()

    The configuration that will be used for the new cluster.

    You should not modify this object directly as change made to the returned object may not be used by the cluster build. Instead, you should use the other methods of this Builder

    .
    Declaration
    public Configuration GetConfiguration()
    Returns
    Type Description
    Configuration

    the configuration to use for the new cluster.

    WithAddressTranslator(IAddressTranslator)

    Configures the address translator to use for the new cluster.

    Declaration
    public Builder WithAddressTranslator(IAddressTranslator addressTranslator)
    Parameters
    Type Name Description
    IAddressTranslator addressTranslator

    the translator to use.

    Returns
    Type Description
    Builder

    this Builder

    Remarks

    See IAddressTranslator for more detail on address translation, but the default translator, DefaultAddressTranslator, should be correct in most cases. If unsure, stick to the default.

    WithApplicationName(string)

    An optional configuration identifying the name of the application using this cluster instance.

    This value is passed to the server as a startup option and is useful as metadata for describing a client connection.
    Declaration
    public Builder WithApplicationName(string name)
    Parameters
    Type Name Description
    string name

    The name of the application using this cluster.

    Returns
    Type Description
    Builder

    this instance

    WithApplicationVersion(string)

    An optional configuration identifying the version of the application using this cluster instance.

    This value is passed to the server as a startup option and is useful as metadata for describing a client connection.
    Declaration
    public Builder WithApplicationVersion(string version)
    Parameters
    Type Name Description
    string version

    The version of the application using this cluster.

    Returns
    Type Description
    Builder

    this instance

    WithAuthProvider(IAuthProvider)

    Use the specified AuthProvider when connecting to Cassandra hosts.

    Use this method when a custom authentication scheme is in place. You shouldn't call both this method and {@code withCredentials}' on the same Builder instance as one will supersede the other

    Declaration
    public Builder WithAuthProvider(IAuthProvider authProvider)
    Parameters
    Type Name Description
    IAuthProvider authProvider

    the AuthProvider"> to use to login to Cassandra hosts.

    Returns
    Type Description
    Builder

    this Builder

    WithBetaProtocolVersions()

    Whether to allow beta protocol versions to be used. Do NOT set this in production environments as beta protocol versions are not supported or recommended for production use.

    Declaration
    public Builder WithBetaProtocolVersions()
    Returns
    Type Description
    Builder

    WithCloudSecureConnectionBundle(string)

    Configures a Cluster using the Cloud Secure Connection Bundle. Using this method will configure this builder with specific contact points, SSL options, credentials and load balancing policy. When needed, you can specify custom settings by calling other builder methods.

    In case you need to specify a different set of credentials from the one in the bundle, here is an example: ///

    Cluster.Builder()
                                                                                                                                    .WithCloudSecureConnectionBundle("/path/to/bundle.zip")
                                                                                                                                    .WithCredentials("username", "password")
                                                                                                                                    .Build();

    Build() will throw InvalidOperationException when an error occurs that is not related to connectivity and NoHostAvailableException when an error occurs while trying to obtain the cluster metadata from the remote endpoint.

    Declaration
    public Builder WithCloudSecureConnectionBundle(string bundlePath)
    Parameters
    Type Name Description
    string bundlePath

    Path of the secure connection bundle.

    Returns
    Type Description
    Builder

    A preconfigured builder ready for use.

    WithClusterId(Guid)

    An optional configuration for providing a unique identifier for the created cluster instance.

    If not provided, an id will generated.

    This value is passed to the server as a startup option and is useful as metadata for describing a client connection.

    Declaration
    public Builder WithClusterId(Guid id)
    Parameters
    Type Name Description
    Guid id

    The id to assign to this cluster instance.

    Returns
    Type Description
    Builder

    this instance

    WithColumnEncryptionPolicy(IColumnEncryptionPolicy)

    Configures the column encryption policy to use for the new cluster. This is a client side encryption feature which requires the column type to be 'blob' at schema level but the application can define at the application level which type the column should be. See IColumnEncryptionPolicy for more information.

    Declaration
    public Builder WithColumnEncryptionPolicy(IColumnEncryptionPolicy policy)
    Parameters
    Type Name Description
    IColumnEncryptionPolicy policy

    the column encryption policy to use

    Returns
    Type Description
    Builder

    this Builder

    WithCompression(CompressionType)

    Sets the compression to use for the transport.

    Declaration
    public Builder WithCompression(CompressionType compression)
    Parameters
    Type Name Description
    CompressionType compression

    the compression to set

    Returns
    Type Description
    Builder

    this Builder ProtocolOptions.Compression

    WithConnectionString(string)

    Configure the cluster by applying settings from ConnectionString.

    Declaration
    public Builder WithConnectionString(string connectionString)
    Parameters
    Type Name Description
    string connectionString

    the ConnectionString to use

    Returns
    Type Description
    Builder

    this Builder

    WithCredentials(string, string)

    Uses the provided credentials when connecting to Cassandra hosts.

    This should be used if the Cassandra cluster has been configured to use the PasswordAuthenticator. If the the default * AllowAllAuthenticator is used instead, using this method has no effect.

    Declaration
    public Builder WithCredentials(string username, string password)
    Parameters
    Type Name Description
    string username

    the user name to use to login to Cassandra hosts.

    string password

    the password corresponding to

    Returns
    Type Description
    Builder

    this Builder

    WithCustomCompressor(IFrameCompressor)

    Sets a custom compressor to be used for the compression type. If specified, the compression type is mandatory. If not specified the driver default compressor will be use for the compression type.

    Declaration
    public Builder WithCustomCompressor(IFrameCompressor compressor)
    Parameters
    Type Name Description
    IFrameCompressor compressor

    Implementation of IFrameCompressor

    Returns
    Type Description
    Builder

    WithDefaultKeyspace(string)

    Sets default keyspace name for the created cluster.

    Declaration
    public Builder WithDefaultKeyspace(string defaultKeyspace)
    Parameters
    Type Name Description
    string defaultKeyspace

    Default keyspace name.

    Returns
    Type Description
    Builder

    this builder

    WithExecutionProfiles(Action<IExecutionProfileOptions>)

    Adds Execution Profiles to the Cluster instance.

    Execution profiles are like configuration presets, multiple methods of the driver accept an execution profile name which is like telling the driver which settings to use for that particular request. This makes it easier to change settings like ConsistencyLevel and ReadTimeoutMillis on a per request basis.

    Note that subsequent calls to this method will override the previously provided profiles.

    To add execution profiles you can use WithProfile(string, Action<IExecutionProfileBuilder>):

    Cluster.Builder()
              .WithExecutionProfiles(options => options
                  .WithProfile("profile1", profileBuilder => profileBuilder
                      .WithReadTimeoutMillis(10000)
                      .WithConsistencyLevel(ConsistencyLevel.LocalQuorum)))
              .Build()
    Declaration
    public Builder WithExecutionProfiles(Action<IExecutionProfileOptions> profileOptionsBuilder)
    Parameters
    Type Name Description
    Action<IExecutionProfileOptions> profileOptionsBuilder
    Returns
    Type Description
    Builder

    This builder

    WithGraphOptions(GraphOptions)

    Sets the DataStax Graph options.

    Declaration
    public Builder WithGraphOptions(GraphOptions options)
    Parameters
    Type Name Description
    GraphOptions options
    Returns
    Type Description
    Builder

    this instance

    WithLoadBalancingPolicy(ILoadBalancingPolicy)

    Configure the load balancing policy to use for the new cluster.

    If no load balancing policy is set through this method, DefaultLoadBalancingPolicy will be used instead.

    To specify the local datacenter with the default load balancing policy, use the following method to create a new policy instance: NewDefaultLoadBalancingPolicy(string).

    Declaration
    public Builder WithLoadBalancingPolicy(ILoadBalancingPolicy policy)
    Parameters
    Type Name Description
    ILoadBalancingPolicy policy

    the load balancing policy to use.

    Returns
    Type Description
    Builder

    this Builder

    WithMaxProtocolVersion(ProtocolVersion)

    Limits the maximum protocol version used to connect to the nodes

    When it is not set, the protocol version used is negotiated between the driver and the Cassandra cluster upon establishing the first connection.

    Useful when connecting to a cluster that contains nodes with different major/minor versions of Cassandra. For example, preparing for a rolling upgrade of the Cluster.

    Declaration
    public Builder WithMaxProtocolVersion(ProtocolVersion version)
    Parameters
    Type Name Description
    ProtocolVersion version
    Returns
    Type Description
    Builder

    this instance

    Remarks

    Some Cassandra features are only available with a specific protocol version.

    WithMaxProtocolVersion(byte)

    Limits the maximum protocol version used to connect to the nodes

    When it is not set, the protocol version used is negotiated between the driver and the Cassandra cluster upon establishing the first connection.

    Useful when connecting to a cluster that contains nodes with different major/minor versions of Cassandra. For example, preparing for a rolling upgrade of the Cluster.

    Declaration
    public Builder WithMaxProtocolVersion(byte version)
    Parameters
    Type Name Description
    byte version

    The native protocol version.

    Different Cassandra versions support a range of protocol versions, for example:

    - Cassandra 2.0 (DSE 4.0 - 4.6): Supports protocol versions 1 and 2.

    - Cassandra 2.1 (DSE 4.7 - 4.8): Supports protocol versions 1, 2 and 3.

    - Cassandra 2.2: Supports protocol versions 1, 2, 3 and 4.

    - Cassandra 3.0: Supports protocol versions 3 and 4.

    Returns
    Type Description
    Builder

    this instance

    Remarks

    Some Cassandra features are only available with a specific protocol version.

    WithMaxSchemaAgreementWaitSeconds(int)

    Sets the maximum time to wait for schema agreement before returning from a DDL query.

    DDL queries introduce schema changes that need to be propagated to all nodes in the cluster. Once they have settled on a common version, we say that they are in agreement.

    If not set through this method, the default value (10 seconds) will be used.
    Declaration
    public Builder WithMaxSchemaAgreementWaitSeconds(int maxSchemaAgreementWaitSeconds)
    Parameters
    Type Name Description
    int maxSchemaAgreementWaitSeconds

    The new value to set.

    Returns
    Type Description
    Builder

    This Builder.

    Exceptions
    Type Condition
    ArgumentException

    If the provided value is zero or less.

    WithMetadataSyncOptions(MetadataSyncOptions)

    If not set through this method, the default value options will be used (metadata synchronization is enabled by default). The api reference of MetadataSyncOptions specifies what is the default for each option.

    In case you disable Metadata synchronization, please ensure you invoke RefreshSchemaAsync(string, string) in order to keep the token metadata up to date otherwise you will not be getting everything you can out of token aware routing, i.e. TokenAwarePolicy, which is enabled by the default.

    Disabling this feature has the following impact:

    • Token metadata will not be computed and stored. This means that token aware routing (TokenAwarePolicy, enabled by default) will only work correctly if you keep the token metadata up to date using the RefreshSchemaAsync(string, string) method. If you wish to go this route of manually refreshing the metadata then it's recommended to refresh only the keyspaces that this application will use, by passing the
      keyspace
      parameter.
    • Keyspace metadata will not be cached by the driver. Every time you call methods like GetTable(string, string), GetKeyspace(string) and other similar methods of the Metadata class, the driver will query that data on demand and will not cache it.
    • The driver will not handle
      SCHEMA_CHANGED
      responses. This means that when you execute schema changing statements through the driver, it will not update the schema or topology metadata automatically before returning.
    Declaration
    public Builder WithMetadataSyncOptions(MetadataSyncOptions metadataSyncOptions)
    Parameters
    Type Name Description
    MetadataSyncOptions metadataSyncOptions

    The new options to set.

    Returns
    Type Description
    Builder

    This Builder.

    WithMetrics(IDriverMetricsProvider)

    Enables metrics. DataStax provides an implementation based on a third party library (App.Metrics) on a separate NuGet package: CassandraCSharpDriver.AppMetrics Alternatively, you can implement your own provider that implements IDriverMetricsProvider.

    This method enables all individual metrics without a bucket prefix. To customize these options, use WithMetrics(IDriverMetricsProvider, DriverMetricsOptions).

    Declaration
    public Builder WithMetrics(IDriverMetricsProvider driverMetricsProvider)
    Parameters
    Type Name Description
    IDriverMetricsProvider driverMetricsProvider

    Metrics Provider implementation.

    Returns
    Type Description
    Builder

    This builder

    WithMetrics(IDriverMetricsProvider, DriverMetricsOptions)

    Enables metrics. DataStax provides an implementation based on a third party library (App.Metrics) on a separate NuGet package: CassandraCSharpDriver.AppMetrics Alternatively, you can implement your own provider that implements IDriverMetricsProvider.

    This method enables all individual metrics without a bucket prefix. To customize these settings, use WithMetrics(IDriverMetricsProvider, DriverMetricsOptions). For explanations on these settings, see the API docs of the DriverMetricsOptions class.

    The AppMetrics provider also has some settings that can be customized, check out the API docs of Cassandra.AppMetrics.DriverAppMetricsOptions.

    Here is an example:

    var cluster = 
        Cluster.Builder()
               .WithMetrics(
                   metrics.CreateDriverMetricsProvider(new DriverAppMetricsOptions()),
                   new DriverMetricsOptions()
                       .SetEnabledNodeMetrics(NodeMetric.DefaultNodeMetrics.Except(new [] { NodeMetric.Meters.BytesSent }))
                       .SetEnabledSessionMetrics(
                           SessionMetric.DefaultSessionMetrics.Except(new[] { SessionMetric.Meters.BytesReceived }))
                       .SetBucketPrefix("web.app"))
               .Build();
    Declaration
    public Builder WithMetrics(IDriverMetricsProvider driverMetricsProvider, DriverMetricsOptions metricsOptions)
    Parameters
    Type Name Description
    IDriverMetricsProvider driverMetricsProvider

    Metrics Provider implementation.

    DriverMetricsOptions metricsOptions

    Metrics Provider implementation.

    Returns
    Type Description
    Builder

    This builder

    WithMonitorReporting(bool)

    Configures options related to Monitor Reporting for the new cluster. By default, Monitor Reporting is enabled for server types and versions that support it.

    Declaration
    public Builder WithMonitorReporting(bool enabled)
    Parameters
    Type Name Description
    bool enabled
    Returns
    Type Description
    Builder

    This Builder.

    WithNoCompact()

    Enables the NO_COMPACT startup option.

    When this option is set, SELECT, UPDATE, DELETE, and BATCH statements on COMPACT STORAGE tables function in "compatibility" mode which allows seeing these tables as if they were "regular" CQL tables.

    This option only affects interactions with tables using COMPACT STORAGE and it is only supported by C* 3.0.16+, 3.11.2+, 4.0+ and DSE 6.0+.

    Declaration
    public Builder WithNoCompact()
    Returns
    Type Description
    Builder

    WithPoolingOptions(PoolingOptions)

    Declaration
    public Builder WithPoolingOptions(PoolingOptions value)
    Parameters
    Type Name Description
    PoolingOptions value
    Returns
    Type Description
    Builder

    WithPort(int)

    The port to use to connect to all Cassandra hosts. If not set through this method, the default port (9042) will be used instead.

    Declaration
    public Builder WithPort(int port)
    Parameters
    Type Name Description
    int port

    the port to set.

    Returns
    Type Description
    Builder

    this Builder

    WithQueryOptions(QueryOptions)

    Sets the QueryOptions to use for the newly created Cluster.

    If no query options are set through this method, default query options will be used.

    Declaration
    public Builder WithQueryOptions(QueryOptions options)
    Parameters
    Type Name Description
    QueryOptions options

    the QueryOptions to use.

    Returns
    Type Description
    Builder

    this Builder.

    WithQueryTimeout(int)

    Specifies the number of milliseconds that the driver should wait for the response before the query times out in a synchronous operation.

    This will cause that synchronous operations like Execute(string) to throw a TimeoutException after the specified number of milliseconds.

    Default timeout value is set to
    20,000
    (20 seconds).
    Declaration
    public Builder WithQueryTimeout(int queryAbortTimeout)
    Parameters
    Type Name Description
    int queryAbortTimeout

    Timeout specified in milliseconds.

    Returns
    Type Description
    Builder

    this builder

    Remarks

    If you want to define a read timeout at a lower level, you can use SetReadTimeoutMillis(int).

    WithReconnectionPolicy(IReconnectionPolicy)

    Configure the reconnection policy to use for the new cluster.

    If no reconnection policy is set through this method,

    Policies.DefaultReconnectionPolicy will be used instead.
    Declaration
    public Builder WithReconnectionPolicy(IReconnectionPolicy policy)
    Parameters
    Type Name Description
    IReconnectionPolicy policy

    the reconnection policy to use

    Returns
    Type Description
    Builder

    this Builder

    WithRequestTracker(IRequestTracker)

    Declaration
    public Builder WithRequestTracker(IRequestTracker requestTracker)
    Parameters
    Type Name Description
    IRequestTracker requestTracker
    Returns
    Type Description
    Builder

    WithRetryPolicy(IRetryPolicy)

    Configure the retry policy to be used for the new cluster.

    When the retry policy is not set with this method, the DefaultRetryPolicy will be used instead.

    Use a IExtendedRetryPolicy implementation to cover all error scenarios.

    Declaration
    public Builder WithRetryPolicy(IRetryPolicy policy)
    Parameters
    Type Name Description
    IRetryPolicy policy

    the retry policy to use

    Returns
    Type Description
    Builder

    this Builder

    WithSSL()

    Enables the use of SSL for the created Cluster. Calling this method will use default SSL options.

    Declaration
    public Builder WithSSL()
    Returns
    Type Description
    Builder

    this builder

    Remarks

    If SSL is enabled, the driver will not connect to any Cassandra nodes that doesn't have SSL enabled and it is strongly advised to enable SSL on every Cassandra node if you plan on using SSL in the driver. Note that SSL certificate common name(CN) on Cassandra node must match Cassandra node hostname.

    WithSSL(SSLOptions)

    Enables the use of SSL for the created Cluster using the provided options.

    Declaration
    public Builder WithSSL(SSLOptions sslOptions)
    Parameters
    Type Name Description
    SSLOptions sslOptions

    SSL options to use.

    Returns
    Type Description
    Builder

    this builder

    Remarks

    If SSL is enabled, the driver will not connect to any Cassandra nodes that doesn't have SSL enabled and it is strongly advised to enable SSL on every Cassandra node if you plan on using SSL in the driver. Note that SSL certificate common name(CN) on Cassandra node must match Cassandra node hostname.

    WithSessionName(string)

    ISession objects created through the ICluster built from this builder will have SessionName set to the value provided in this method. The first session created by this cluster instance will have its name set exactly as it is provided in this method. Any session created by the ICluster built from this builder after the first one will have its name set as a concatenation of the provided value plus a counter.

    var cluster = Cluster.Builder().WithSessionName("main-session").Build();
    var session = cluster.Connect(); // session.SessionName == "main-session"
    var session1 = cluster.Connect(); // session1.SessionName == "main-session1"
    var session2 = cluster.Connect(); // session2.SessionName == "main-session2"

    If this setting is not set, the default session names will be "s0", "s1", "s2", etc.

    var cluster = Cluster.Builder().Build();
    var session = cluster.Connect(); // session.SessionName == "s0"
    var session1 = cluster.Connect(); // session1.SessionName == "s1"
    var session2 = cluster.Connect(); // session2.SessionName == "s2"
    Declaration
    public Builder WithSessionName(string sessionName)
    Parameters
    Type Name Description
    string sessionName
    Returns
    Type Description
    Builder

    WithSocketOptions(SocketOptions)

    Configures the socket options that are going to be used to create the connections to the hosts.

    Declaration
    public Builder WithSocketOptions(SocketOptions value)
    Parameters
    Type Name Description
    SocketOptions value
    Returns
    Type Description
    Builder

    WithSpeculativeExecutionPolicy(ISpeculativeExecutionPolicy)

    Configure the speculative execution to use for the new cluster.

    If no speculative execution policy is set through this method, DefaultSpeculativeExecutionPolicy will be used instead.

    Declaration
    public Builder WithSpeculativeExecutionPolicy(ISpeculativeExecutionPolicy policy)
    Parameters
    Type Name Description
    ISpeculativeExecutionPolicy policy

    the speculative execution policy to use

    Returns
    Type Description
    Builder

    this Builder

    WithTimestampGenerator(ITimestampGenerator)

    Configures the generator that will produce the client-side timestamp sent with each query.

    This feature is only available with protocol version 3 or above of the native protocol. With earlier versions, timestamps are always generated server-side, and setting a generator through this method will have no effect.

    If no generator is set through this method, the driver will default to client-side timestamps by using AtomicMonotonicTimestampGenerator.

    Declaration
    public Builder WithTimestampGenerator(ITimestampGenerator generator)
    Parameters
    Type Name Description
    ITimestampGenerator generator

    The generator to use.

    Returns
    Type Description
    Builder

    This builder instance

    WithTypeSerializers(TypeSerializerDefinitions)

    Sets the TypeSerializer<T> to be used, replacing the default ones.

    Declaration
    public Builder WithTypeSerializers(TypeSerializerDefinitions definitions)
    Parameters
    Type Name Description
    TypeSerializerDefinitions definitions
    Returns
    Type Description
    Builder

    this instance

    WithUnresolvedContactPoints(bool)

    Whether to resolve hostname based contact points every time the driver attempts to use it to open a connection.

    Note that not every contact point is usually added as a Host instance and only the Host instances can be picked by the ILoadBalancingPolicy as coordinators for application requests. The driver adds the node which is used for the control connection as a Host and then parses the remaining hosts and their IP addresses from system tables, therefore ignoring the remaining contact points unless the control connection needs to be reconnected.

    Declaration
    public Builder WithUnresolvedContactPoints(bool keepContactPointsUnresolved)
    Parameters
    Type Name Description
    bool keepContactPointsUnresolved
    Returns
    Type Description
    Builder

    WithoutRowSetBuffering()

    Disables row set buffering for the created cluster (row set buffering is enabled by default otherwise).

    Declaration
    public Builder WithoutRowSetBuffering()
    Returns
    Type Description
    Builder

    this builder

    Implements

    IInitializer
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