• 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 TypeConverter

    A factory for retrieving Functions capable of converting between two Types. To use custom Type conversions, inheritors should derive from this class and implement the GetUserDefinedFromDbConverter<TDatabase, TPoco>() and GetUserDefinedToDbConverter<TPoco, TDatabase>() methods.

    Inheritance
    object
    TypeConverter
    DefaultTypeConverter
    Inherited Members
    object.Equals(object)
    object.Equals(object, object)
    object.GetHashCode()
    object.GetType()
    object.MemberwiseClone()
    object.ReferenceEquals(object, object)
    object.ToString()
    Namespace: Cassandra.Mapping.TypeConversion
    Assembly: Cassandra.dll
    Syntax
    public abstract class TypeConverter

    Constructors

    TypeConverter()

    Creates a new TypeConverter instance.

    Declaration
    protected TypeConverter()

    Methods

    GetUserDefinedFromDbConverter<TDatabase, TPoco>()

    Gets any user defined conversion functions that can convert a value of type TDatabase (coming from Cassandra) to a type of TPoco (a field or property on a POCO). Return null if no conversion Func is available.

    Declaration
    protected abstract Func<TDatabase, TPoco> GetUserDefinedFromDbConverter<TDatabase, TPoco>()
    Returns
    Type Description
    Func<TDatabase, TPoco>

    A Func that can convert between the two types or null if one is not available.

    Type Parameters
    Name Description
    TDatabase

    The Type of the source value from Cassandra to be converted.

    TPoco

    The Type of the destination value on the POCO.

    GetUserDefinedToDbConverter<TPoco, TDatabase>()

    Gets any user defined conversion functions that can convert a value of type TPoco (coming from a property/field on a POCO) to a type of TDatabase (the Type expected by Cassandra for the database column). Return null if no conversion Func is available.

    Declaration
    protected abstract Func<TPoco, TDatabase> GetUserDefinedToDbConverter<TPoco, TDatabase>()
    Returns
    Type Description
    Func<TPoco, TDatabase>

    A Func that can converter between the two Types or null if one is not available.

    Type Parameters
    Name Description
    TPoco

    The Type of the source value from the POCO property/field to be converted.

    TDatabase

    The Type expected by C* for the database column.

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