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org.apache.spark.sql.catalyst.expressions

SubExprEvaluationRuntime

class SubExprEvaluationRuntime extends AnyRef

This class helps subexpression elimination for interpreted evaluation such as InterpretedUnsafeProjection. It maintains an evaluation cache. This class wraps ExpressionProxy around given expressions. The ExpressionProxy intercepts expression evaluation and loads from the cache first.

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Instance Constructors

  1. new SubExprEvaluationRuntime(cacheMaxEntries: Int)

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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  6. final def eq(arg0: AnyRef): Boolean
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  7. def equals(arg0: Any): Boolean
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  8. def finalize(): Unit
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  9. final def getClass(): Class[_]
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    @native()
  10. def getEval(proxy: ExpressionProxy): Any
  11. def hashCode(): Int
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  12. final def isInstanceOf[T0]: Boolean
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  13. final def ne(arg0: AnyRef): Boolean
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  14. final def notify(): Unit
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  15. final def notifyAll(): Unit
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    @native()
  16. def proxyExpressions(expressions: Seq[Expression]): Seq[Expression]

    Finds subexpressions and wraps them with ExpressionProxy.

  17. def setInput(input: InternalRow = null): Unit

    Sets given input row as current row for evaluating expressions.

    Sets given input row as current row for evaluating expressions. This cleans up the cache too as new input comes.

  18. final def synchronized[T0](arg0: ⇒ T0): T0
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  19. def toString(): String
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  20. final def wait(): Unit
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  21. final def wait(arg0: Long, arg1: Int): Unit
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  22. final def wait(arg0: Long): Unit
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