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final class CassandraSession extends AnyRef

Data Access Object for Cassandra. The statements are expressed in Apache Cassandra Query Language (CQL) syntax.

See even CQL for Datastax Enterprise.

The init hook is called before the underlying session is used by other methods, so it can be used for things like creating the keyspace and tables.

All methods are non-blocking.

Source
CassandraSession.scala
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Instance Constructors

  1. new CassandraSession(system: ClassicActorSystemProvider, sessionProvider: CqlSessionProvider, executionContext: ExecutionContext, log: LoggingAdapter, metricsCategory: String, init: Function[CqlSession, CompletionStage[Done]], onClose: Runnable)

    Use this constructor if you want to create a stand-alone CassandraSession.

  2. new CassandraSession(system: ActorSystem, sessionProvider: CqlSessionProvider, executionContext: ExecutionContext, log: LoggingAdapter, metricsCategory: String, init: Function[CqlSession, CompletionStage[Done]], onClose: Runnable)

    Use this constructor if you want to create a stand-alone CassandraSession.

  3. new CassandraSession(delegate: scaladsl.CassandraSession)

Value Members

  1. final def !=(arg0: Any): Boolean
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  2. final def ##: Int
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  3. final def ==(arg0: Any): Boolean
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  4. final def asInstanceOf[T0]: T0
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  5. def clone(): AnyRef
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    protected[lang]
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    @throws(classOf[java.lang.CloneNotSupportedException]) @native()
  6. def close(executor: Executor): CompletionStage[Done]

    Closes the underlying Cassandra session.

    Closes the underlying Cassandra session.

    executor

    as this might be used after actor system termination, the actor systems dispatcher can't be used

  7. final def eq(arg0: AnyRef): Boolean
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  8. def equals(arg0: AnyRef): Boolean
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  9. def executeDDL(stmt: String): CompletionStage[Done]

    Execute CQL commands to manage database resources (create, replace, alter, and drop tables, indexes, user-defined types, etc).

    Execute CQL commands to manage database resources (create, replace, alter, and drop tables, indexes, user-defined types, etc).

    The returned CompletionStage is completed when the command is done, or if the statement fails.

  10. def executeWrite(stmt: String, bindValues: AnyRef*): CompletionStage[Done]

    Prepare, bind and execute one statement in one go.

    Prepare, bind and execute one statement in one go.

    See Inserting and updating data.

    The configured write consistency level is used.

    The returned CompletionStage is completed when the statement has been successfully executed, or if it fails.

    Annotations
    @varargs()
  11. def executeWrite(stmt: Statement[_]): CompletionStage[Done]

    Execute one statement.

    Execute one statement. First you must prepare the statement and bind its parameters.

    See Inserting and updating data.

    The configured write consistency level is used if a specific consistency level has not been set on the Statement.

    The returned CompletionStage is completed when the statement has been successfully executed, or if it fails.

  12. def executeWriteBatch(batch: BatchStatement): CompletionStage[Done]

    Execute several statements in a batch.

    Execute several statements in a batch. First you must prepare the statements and bind its parameters.

    See Batching data insertion and updates.

    The configured write consistency level is used if a specific consistency level has not been set on the BatchStatement.

    The returned CompletionStage is completed when the batch has been successfully executed, or if it fails.

  13. def finalize(): Unit
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  15. def hashCode(): Int
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  16. final def isInstanceOf[T0]: Boolean
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  18. final def notify(): Unit
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  19. final def notifyAll(): Unit
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  20. def prepare(stmt: String): CompletionStage[PreparedStatement]

    Create a PreparedStatement that can be bound and used in executeWrite or select multiple times.

  21. def select(stmt: String, bindValues: AnyRef*): Source[Row, NotUsed]

    Prepare, bind and execute a select statement in one go.

    Prepare, bind and execute a select statement in one go.

    See Querying data.

    The configured read consistency level is used.

    Note that you have to connect a Sink that consumes the messages from this Source and then run the stream.

    Annotations
    @varargs()
  22. def select(stmt: CompletionStage[Statement[_]]): Source[Row, NotUsed]

    Execute a select statement.

    Execute a select statement. First you must prepare the statement and bind its parameters.

    See Querying data.

    The configured read consistency level is used if a specific consistency level has not been set on the Statement.

    Note that you have to connect a Sink that consumes the messages from this Source and then run the stream.

  23. def select(stmt: Statement[_]): Source[Row, NotUsed]

    Execute a select statement.

    Execute a select statement. First you must prepare the statement and bind its parameters.

    See Querying data.

    The configured read consistency level is used if a specific consistency level has not been set on the Statement.

    Note that you have to connect a Sink that consumes the messages from this Source and then run the stream.

  24. def selectAll(stmt: String, bindValues: AnyRef*): CompletionStage[List[Row]]

    Prepare, bind and execute a select statement in one go.

    Prepare, bind and execute a select statement in one go. Only use this method when you know that the result is small, e.g. includes a LIMIT clause. Otherwise you should use the select method that returns a Source.

    The configured read consistency level is used.

    The returned CompletionStage is completed with the found rows.

    Annotations
    @varargs()
  25. def selectAll(stmt: Statement[_]): CompletionStage[List[Row]]

    Execute a select statement.

    Execute a select statement. First you must prepare the statement and bind its parameters. Only use this method when you know that the result is small, e.g. includes a LIMIT clause. Otherwise you should use the select method that returns a Source.

    The configured read consistency level is used if a specific consistency level has not been set on the Statement.

    The returned CompletionStage is completed with the found rows.

  26. def selectOne(stmt: String, bindValues: AnyRef*): CompletionStage[Optional[Row]]

    Prepare, bind and execute a select statement that returns one row.

    Prepare, bind and execute a select statement that returns one row.

    The configured read consistency level is used.

    The returned CompletionStage is completed with the first row, if any.

    Annotations
    @varargs()
  27. def selectOne(stmt: Statement[_]): CompletionStage[Optional[Row]]

    Execute a select statement that returns one row.

    Execute a select statement that returns one row. First you must prepare the statement and bind its parameters.

    The configured read consistency level is used if a specific consistency level has not been set on the Statement.

    The returned CompletionStage is completed with the first row, if any.

  28. def serverMetaData: CompletionStage[CassandraServerMetaData]

    Meta data about the Cassandra server, such as its version.

  29. final def synchronized[T0](arg0: => T0): T0
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  30. def toString(): String
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  31. def underlying(): CompletionStage[CqlSession]

    The Session of the underlying Datastax Java Driver.

    The Session of the underlying Datastax Java Driver. Can be used in case you need to do something that is not provided by the API exposed by this class. Be careful to not use blocking calls.

  32. final def wait(): Unit
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  33. final def wait(arg0: Long, arg1: Int): Unit
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  34. final def wait(arg0: Long): Unit
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