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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.

Linear Supertypes
RuleExecutor[Expression], Logging, AnyRef, Any
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Inherited
  1. ExpressionCanonicalizer
  2. RuleExecutor
  3. Logging
  4. AnyRef
  5. Any
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Visibility
  1. Public
  2. All

Type Members

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

    A batch of rules.

    A batch of rules.

    Attributes
    protected
    Definition Classes
    RuleExecutor
  2. case class FixedPoint(maxIterations: Int, errorOnExceed: Boolean = false, maxIterationsSetting: String = null) extends Strategy with Product with Serializable

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

    A strategy that runs until fix point or maxIterations times, whichever comes first. Especially, a FixedPoint(1) batch is supposed to run only once.

    Definition Classes
    RuleExecutor
  3. abstract class Strategy extends AnyRef

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

    An execution strategy for rules that indicates the maximum number of executions. If the execution reaches fix point (i.e. converge) before maxIterations, it will stop.

    Definition Classes
    RuleExecutor

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  5. 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
    ExpressionCanonicalizer → RuleExecutor
  6. val blacklistedOnceBatches: Set[String]

    Once batches that are blacklisted in the idempotence checker

    Once batches that are blacklisted in the idempotence checker

    Attributes
    protected
    Definition Classes
    RuleExecutor
  7. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  8. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  9. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  10. 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
  11. def executeAndTrack(plan: Expression, tracker: QueryPlanningTracker): Expression

    Executes the batches of rules defined by the subclass, and also tracks timing info for each rule using the provided tracker.

    Executes the batches of rules defined by the subclass, and also tracks timing info for each rule using the provided tracker.

    Definition Classes
    RuleExecutor
    See also

    execute

  12. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  13. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  14. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  15. def initializeLogIfNecessary(isInterpreter: Boolean, silent: Boolean): Boolean
    Attributes
    protected
    Definition Classes
    Logging
  16. def initializeLogIfNecessary(isInterpreter: Boolean): Unit
    Attributes
    protected
    Definition Classes
    Logging
  17. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  18. def isPlanIntegral(plan: Expression): Boolean

    Defines a check function that checks for structural integrity of the plan after the execution of each rule.

    Defines a check function that checks for structural integrity of the plan after the execution of each rule. For example, we can check whether a plan is still resolved after each rule in Optimizer, so we can catch rules that return invalid plans. The check function returns false if the given plan doesn't pass the structural integrity check.

    Attributes
    protected
    Definition Classes
    RuleExecutor
  19. def isTraceEnabled(): Boolean
    Attributes
    protected
    Definition Classes
    Logging
  20. def log: Logger
    Attributes
    protected
    Definition Classes
    Logging
  21. def logDebug(msg: ⇒ String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  22. def logDebug(msg: ⇒ String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  23. def logError(msg: ⇒ String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  24. def logError(msg: ⇒ String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  25. def logInfo(msg: ⇒ String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  26. def logInfo(msg: ⇒ String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  27. def logName: String
    Attributes
    protected
    Definition Classes
    Logging
  28. def logTrace(msg: ⇒ String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  29. def logTrace(msg: ⇒ String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  30. def logWarning(msg: ⇒ String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  31. def logWarning(msg: ⇒ String): Unit
    Attributes
    protected
    Definition Classes
    Logging
  32. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  33. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  34. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  35. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  36. def toString(): String
    Definition Classes
    AnyRef → Any
  37. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  38. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  39. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  40. object CleanExpressions extends Rule[Expression]
  41. object Once extends Strategy with Product with Serializable

    A strategy that is run once and idempotent.

    A strategy that is run once and idempotent.

    Definition Classes
    RuleExecutor

Inherited from RuleExecutor[Expression]

Inherited from Logging

Inherited from AnyRef

Inherited from Any

Ungrouped