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org.apache.spark.sql.catalyst.analysis.resolver

ExpressionResolutionContext

class ExpressionResolutionContext extends AnyRef

The ExpressionResolutionContext is a state that is propagated between the nodes of the expression tree during the bottom-up expression resolution process. This way we pass the results of ExpressionResolver.resolve call, which are not the resolved child itself, from children to parents.

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Instance Constructors

  1. new ExpressionResolutionContext(hasAggregateExpressionsInASubtree: Boolean = false, hasAttributeInASubtree: Boolean = false, hasLateralColumnAlias: Boolean = false)

    hasAggregateExpressionsInASubtree

    A flag that highlights that a specific node corresponding to ExpressionResolutionContext has aggregate expressions in its subtree.

    hasAttributeInASubtree

    A flag that highlights that a specific node corresponding to ExpressionResolutionContext has attributes in its subtree.

    hasLateralColumnAlias

    A flag that highlights that a specific node corresponding to ExpressionResolutionContext has LCA in its subtree.

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  1. final def !=(arg0: Any): Boolean
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  9. var hasAggregateExpressionsInASubtree: Boolean
  10. var hasAttributeInASubtree: Boolean
  11. var hasLateralColumnAlias: Boolean
  12. def hashCode(): Int
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  13. final def isInstanceOf[T0]: Boolean
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  14. def merge(other: ExpressionResolutionContext): Unit
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  1. def finalize(): Unit
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    Deprecated

    (Since version 9)

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