org.apache.spark.sql.catalyst.expressions.codegen

ExpressionCanonicalizer

object ExpressionCanonicalizer extends RuleExecutor[Expression]

Canonicalizes an expression so those that differ only by names can reuse the same code.

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  1. ExpressionCanonicalizer
  2. RuleExecutor
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Type Members

  1. case class Batch(name: String, strategy: Strategy, rules: Rule[TreeType]*) extends Product with Serializable

    A batch of rules.

  2. case class FixedPoint(maxIterations: Int) extends Strategy with Product with Serializable

    A strategy that runs until fix point or maxIterations times, whichever comes first.

  3. abstract class Strategy extends AnyRef

    An execution strategy for rules that indicates the maximum number of executions.

Value Members

  1. final def !=(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  2. final def !=(arg0: Any): Boolean

    Definition Classes
    Any
  3. final def ##(): Int

    Definition Classes
    AnyRef → Any
  4. final def ==(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  5. final def ==(arg0: Any): Boolean

    Definition Classes
    Any
  6. object CleanExpressions extends Rule[Expression]

  7. object Once extends Strategy with Product with Serializable

    A strategy that only runs once.

  8. final def asInstanceOf[T0]: T0

    Definition Classes
    Any
  9. val batches: List[Batch]

    Defines a sequence of rule batches, to be overridden by the implementation.

    Defines a sequence of rule batches, to be overridden by the implementation.

    Definition Classes
    ExpressionCanonicalizerRuleExecutor
  10. def clone(): AnyRef

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  11. final def eq(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  12. def equals(arg0: Any): Boolean

    Definition Classes
    AnyRef → Any
  13. def execute(plan: Expression): Expression

    Executes the batches of rules defined by the subclass.

    Executes the batches of rules defined by the subclass. The batches are executed serially using the defined execution strategy. Within each batch, rules are also executed serially.

    Definition Classes
    RuleExecutor
  14. def finalize(): Unit

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  15. final def getClass(): Class[_]

    Definition Classes
    AnyRef → Any
  16. def hashCode(): Int

    Definition Classes
    AnyRef → Any
  17. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any
  18. def isTraceEnabled(): Boolean

    Attributes
    protected
    Definition Classes
    Logging
  19. def log: Logger

    Attributes
    protected
    Definition Classes
    Logging
  20. def logDebug(msg: ⇒ String, throwable: Throwable): Unit

    Attributes
    protected
    Definition Classes
    Logging
  21. def logDebug(msg: ⇒ String): Unit

    Attributes
    protected
    Definition Classes
    Logging
  22. def logError(msg: ⇒ String, throwable: Throwable): Unit

    Attributes
    protected
    Definition Classes
    Logging
  23. def logError(msg: ⇒ String): Unit

    Attributes
    protected
    Definition Classes
    Logging
  24. def logInfo(msg: ⇒ String, throwable: Throwable): Unit

    Attributes
    protected
    Definition Classes
    Logging
  25. def logInfo(msg: ⇒ String): Unit

    Attributes
    protected
    Definition Classes
    Logging
  26. def logName: String

    Attributes
    protected
    Definition Classes
    Logging
  27. def logTrace(msg: ⇒ String, throwable: Throwable): Unit

    Attributes
    protected
    Definition Classes
    Logging
  28. def logTrace(msg: ⇒ String): Unit

    Attributes
    protected
    Definition Classes
    Logging
  29. def logWarning(msg: ⇒ String, throwable: Throwable): Unit

    Attributes
    protected
    Definition Classes
    Logging
  30. def logWarning(msg: ⇒ String): Unit

    Attributes
    protected
    Definition Classes
    Logging
  31. final def ne(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  32. final def notify(): Unit

    Definition Classes
    AnyRef
  33. final def notifyAll(): Unit

    Definition Classes
    AnyRef
  34. final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes
    AnyRef
  35. def toString(): String

    Definition Classes
    AnyRef → Any
  36. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  37. final def wait(arg0: Long, arg1: Int): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  38. final def wait(arg0: Long): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from RuleExecutor[Expression]

Inherited from Logging

Inherited from AnyRef

Inherited from Any

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