Packages

t

org.apache.spark.sql.catalyst.analysis

MultiInstanceRelation

trait MultiInstanceRelation extends AnyRef

A trait that should be mixed into query operators where a single instance might appear multiple times in a logical query plan. It is invalid to have multiple copies of the same attribute produced by distinct operators in a query tree as this breaks the guarantee that expression ids, which are used to differentiate attributes, are unique.

During analysis, operators that include this trait may be asked to produce a new version of itself with globally unique expression ids.

Linear Supertypes
AnyRef, Any
Known Subclasses
HiveTableRelation, LocalRelation, Range, View, DataSourceV2Relation, StreamingDataSourceV2Relation
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Abstract Value Members

  1. abstract def newInstance(): LogicalPlan

Concrete Value Members

  1. final def !=(arg0: Any): Boolean
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    AnyRef → Any
  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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    protected[lang]
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    @throws( ... ) @native()
  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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    protected[lang]
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    @throws( classOf[java.lang.Throwable] )
  9. final def getClass(): Class[_]
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    @native()
  10. def hashCode(): Int
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    @native()
  11. final def isInstanceOf[T0]: Boolean
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  12. final def ne(arg0: AnyRef): Boolean
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  13. final def notify(): Unit
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    @native()
  14. final def notifyAll(): Unit
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  15. final def synchronized[T0](arg0: ⇒ T0): T0
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  16. def toString(): String
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  17. final def wait(): Unit
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    @throws( ... )
  18. final def wait(arg0: Long, arg1: Int): Unit
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  19. final def wait(arg0: Long): Unit
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