Packages

object LookupFunctions extends Rule[LogicalPlan]

Checks whether a function identifier referenced by an UnresolvedFunction is defined in the function registry. Note that this rule doesn't try to resolve the UnresolvedFunction. It only performs simple existence check according to the function identifier to quickly identify undefined functions without triggering relation resolution, which may incur potentially expensive partition/schema discovery process in some cases. In order to avoid duplicate external functions lookup, the external function identifier will store in the local hash set externalFunctionNameSet.

See also

ResolveFunctions

https://issues.apache.org/jira/browse/SPARK-19737

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Rule[LogicalPlan], Logging, AnyRef, Any
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  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. def apply(plan: LogicalPlan): LogicalPlan
    Definition Classes
    LookupFunctions → Rule
  5. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  6. def clone(): AnyRef
    Attributes
    protected[lang]
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    AnyRef
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    @throws( ... ) @native()
  7. final def eq(arg0: AnyRef): Boolean
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  8. def equals(arg0: Any): Boolean
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  9. def finalize(): Unit
    Attributes
    protected[lang]
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    AnyRef
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    @throws( classOf[java.lang.Throwable] )
  10. def formatDatabaseName(name: String): String
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  11. final def getClass(): Class[_]
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    @native()
  12. def hashCode(): Int
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    @native()
  13. def initializeLogIfNecessary(isInterpreter: Boolean, silent: Boolean): Boolean
    Attributes
    protected
    Definition Classes
    Logging
  14. def initializeLogIfNecessary(isInterpreter: Boolean): Unit
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    protected
    Definition Classes
    Logging
  15. final def isInstanceOf[T0]: Boolean
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    Any
  16. def isTraceEnabled(): Boolean
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    protected
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    Logging
  17. def log: Logger
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    Logging
  18. def logDebug(msg: ⇒ String, throwable: Throwable): Unit
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    protected
    Definition Classes
    Logging
  19. def logDebug(msg: ⇒ String): Unit
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    protected
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  20. def logError(msg: ⇒ String, throwable: Throwable): Unit
    Attributes
    protected
    Definition Classes
    Logging
  21. def logError(msg: ⇒ String): Unit
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  22. def logInfo(msg: ⇒ String, throwable: Throwable): Unit
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    Logging
  23. def logInfo(msg: ⇒ String): Unit
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  24. def logName: String
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    Logging
  25. def logTrace(msg: ⇒ String, throwable: Throwable): Unit
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    protected
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    Logging
  26. def logTrace(msg: ⇒ String): Unit
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  27. def logWarning(msg: ⇒ String, throwable: Throwable): Unit
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    Logging
  28. def logWarning(msg: ⇒ String): Unit
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    protected
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    Logging
  29. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  30. def normalizeFuncName(name: FunctionIdentifier): FunctionIdentifier
  31. final def notify(): Unit
    Definition Classes
    AnyRef
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    @native()
  32. final def notifyAll(): Unit
    Definition Classes
    AnyRef
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    @native()
  33. val ruleName: String

    Name for this rule, automatically inferred based on class name.

    Name for this rule, automatically inferred based on class name.

    Definition Classes
    Rule
  34. final def synchronized[T0](arg0: ⇒ T0): T0
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  35. def toString(): String
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  36. final def wait(): Unit
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  37. final def wait(arg0: Long, arg1: Int): Unit
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    @throws( ... )
  38. final def wait(arg0: Long): Unit
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    @throws( ... ) @native()

Inherited from Rule[LogicalPlan]

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