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object CassandraDirectJoinStrategy extends Logging with Serializable

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  1. CassandraDirectJoinStrategy
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  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. def aliasMap(aliases: Seq[NamedExpression]): Map[String, ExprId]

    Map Source Cassandra Column Names to ExpressionIds referring to them

  5. def allPartitionKeysAreJoined(plan: LogicalPlan, joinKeys: Seq[Expression]): Boolean

    Every partition key column must be a join key

  6. final def asInstanceOf[T0]: T0
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  7. def clone(): AnyRef
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    protected[lang]
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    @throws( ... ) @native() @HotSpotIntrinsicCandidate()
  8. def containsSafePlans(plan: LogicalPlan): Boolean

    Checks whether a logical plan contains only Filters, Aliases and CassandraSource Relations

  9. final def eq(arg0: AnyRef): Boolean
    Definition Classes
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  10. def equals(arg0: Any): Boolean
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  11. def getAlias(expr: NamedExpression): Seq[(String, ExprId)]
  12. def getCassandraScan(plan: LogicalPlan): Option[CassandraScan]
  13. def getCassandraTable(plan: LogicalPlan): Option[CassandraTable]

    Checks whether there is only a single leaf to this plan and that the leaf is a CassandraTable.

    Checks whether there is only a single leaf to this plan and that the leaf is a CassandraTable. If it is returns that table.

  14. final def getClass(): Class[_]
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    @native() @HotSpotIntrinsicCandidate()
  15. def getDSV2CassandraRelation(plan: LogicalPlan): Option[DataSourceV2ScanRelation]

    Checks whether there is only a single leaf to this plan and that the leaf is a DSV2 Relation Reading from a C* table.

    Checks whether there is only a single leaf to this plan and that the leaf is a DSV2 Relation Reading from a C* table. If it is returns that table.

  16. def getScanExec(plan: SparkPlan): Option[BatchScanExec]

    Returns the single DataSourceScanExec for the branch if there is one and it scans Cassandra

  17. def hasCassandraChild[T <: QueryPlan[T]](plan: T): Boolean

    Checks whether a query plan has either a logical or physical node pulling data from cassandra

  18. def hashCode(): Int
    Definition Classes
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    @native() @HotSpotIntrinsicCandidate()
  19. final def isInstanceOf[T0]: Boolean
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  20. def isTraceEnabled(): Boolean
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    Logging
  21. def log: Logger
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  22. def logDebug(msg: ⇒ String, throwable: Throwable): Unit
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  23. def logDebug(msg: ⇒ String): Unit
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  24. def logError(msg: ⇒ String, throwable: Throwable): Unit
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  25. def logError(msg: ⇒ String): Unit
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  26. def logInfo(msg: ⇒ String, throwable: Throwable): Unit
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  27. def logInfo(msg: ⇒ String): Unit
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  28. def logName: String
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  29. def logTrace(msg: ⇒ String, throwable: Throwable): Unit
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  30. def logTrace(msg: ⇒ String): Unit
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  31. def logWarning(msg: ⇒ String, throwable: Throwable): Unit
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  32. def logWarning(msg: ⇒ String): Unit
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  33. final def ne(arg0: AnyRef): Boolean
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  34. final def notify(): Unit
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    @native() @HotSpotIntrinsicCandidate()
  35. final def notifyAll(): Unit
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    @native() @HotSpotIntrinsicCandidate()
  36. def reorderPlan(plan: SparkPlan, directJoin: CassandraDirectJoinExec, originalOutput: Seq[Attribute]): SparkPlan

    Given our target Cassandra based branch, we remove the node which draws data from cassandra (DataSourceScanExec) and replace it with the passed directJoin plan instead.

    Given our target Cassandra based branch, we remove the node which draws data from cassandra (DataSourceScanExec) and replace it with the passed directJoin plan instead.

    INPUT :

    //directJoin: DirectJoinPlan// DirectJoin <-- GetKeyOperations

    //plan: Optimized CassandraScanBranch/ OtherOperations <-- CassandraScan

    OUTPUT:

    OtherOperations <-- DirectJoin <-- GetKeyOperations

    The output of (plan) is not changed, but its children should be changed.

    This should only be called on optimized Physical Plans

  37. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
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  38. def toString(): String
    Definition Classes
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  39. def validJoinBranch(plan: LogicalPlan, keys: Seq[Expression]): Boolean

    Checks whether the Plan contains only acceptable logical nodes and all partition keys are joined

  40. def validJoinType(cassandraSide: BuildSide, joinType: JoinType): Boolean
  41. val validJoins: Map[BuildSide, Seq[JoinType]]

    Currently we will only support Inner, LeftOuter and RightOuter joins Depending on the side of the CassandraTarget different joins are allowed.

  42. final def wait(arg0: Long, arg1: Int): Unit
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    @throws( ... )
  43. final def wait(arg0: Long): Unit
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  44. final def wait(): Unit
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    @throws( ... )

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  1. def finalize(): Unit
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    @throws( classOf[java.lang.Throwable] ) @Deprecated @deprecated
    Deprecated

    (Since version ) see corresponding Javadoc for more information.

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