Packages

case class AnalysisContext(catalogAndNamespace: Seq[String] = Nil, nestedViewDepth: Int = 0, maxNestedViewDepth: Int = -1, relationCache: Map[Seq[String], LogicalPlan] = mutable.Map.empty, referredTempViewNames: Seq[Seq[String]] = Seq.empty, referredTempFunctionNames: Seq[String] = Seq.empty) extends Product with Serializable

Provides a way to keep state during the analysis, mostly for resolving views. This enables us to decouple the concerns of analysis environment from the catalog. The state that is kept here is per-query.

Note this is thread local.

catalogAndNamespace

The catalog and namespace used in the view resolution. This overrides the current catalog and namespace when resolving relations inside views.

nestedViewDepth

The nested depth in the view resolution, this enables us to limit the depth of nested views.

maxNestedViewDepth

The maximum allowed depth of nested view resolution.

relationCache

A mapping from qualified table names to resolved relations. This can ensure that the table is resolved only once if a table is used multiple times in a query.

referredTempViewNames

All the temp view names referred by the current view we are resolving. It's used to make sure the relation resolution is consistent between view creation and view resolution. For example, if t was a permanent table when the current view was created, it should still be a permanent table when resolving the current view, even if a temp view t has been created.

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Serializable, Serializable, Product, Equals, AnyRef, Any
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Instance Constructors

  1. new AnalysisContext(catalogAndNamespace: Seq[String] = Nil, nestedViewDepth: Int = 0, maxNestedViewDepth: Int = -1, relationCache: Map[Seq[String], LogicalPlan] = mutable.Map.empty, referredTempViewNames: Seq[Seq[String]] = Seq.empty, referredTempFunctionNames: Seq[String] = Seq.empty)

    catalogAndNamespace

    The catalog and namespace used in the view resolution. This overrides the current catalog and namespace when resolving relations inside views.

    nestedViewDepth

    The nested depth in the view resolution, this enables us to limit the depth of nested views.

    maxNestedViewDepth

    The maximum allowed depth of nested view resolution.

    relationCache

    A mapping from qualified table names to resolved relations. This can ensure that the table is resolved only once if a table is used multiple times in a query.

    referredTempViewNames

    All the temp view names referred by the current view we are resolving. It's used to make sure the relation resolution is consistent between view creation and view resolution. For example, if t was a permanent table when the current view was created, it should still be a permanent table when resolving the current view, even if a temp view t has been created.

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 catalogAndNamespace: Seq[String]
  6. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  7. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  8. def finalize(): Unit
    Attributes
    protected[lang]
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    @throws( classOf[java.lang.Throwable] )
  9. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  10. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  11. val maxNestedViewDepth: Int
  12. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  13. val nestedViewDepth: Int
  14. final def notify(): Unit
    Definition Classes
    AnyRef
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    @native()
  15. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  16. val referredTempFunctionNames: Seq[String]
  17. val referredTempViewNames: Seq[Seq[String]]
  18. val relationCache: Map[Seq[String], LogicalPlan]
  19. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  20. final def wait(): Unit
    Definition Classes
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    @throws( ... )
  21. final def wait(arg0: Long, arg1: Int): Unit
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    @throws( ... )
  22. final def wait(arg0: Long): Unit
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    @throws( ... ) @native()

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Inherited from Product

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