Packages

o

org.apache.spark.sql.execution.joins

EmptyHashedRelation

object EmptyHashedRelation extends HashedRelation with Product with Serializable

A special HashedRelation indicating that it's built from a empty input:Iterator[InternalRow]. get & getValue will return null just like empty LongHashedRelation or empty UnsafeHashedRelation does.

Linear Supertypes
Serializable, Serializable, Product, Equals, HashedRelation, KnownSizeEstimation, AnyRef, Any
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Inherited
  1. EmptyHashedRelation
  2. Serializable
  3. Serializable
  4. Product
  5. Equals
  6. HashedRelation
  7. KnownSizeEstimation
  8. AnyRef
  9. Any
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Visibility
  1. Public
  2. All

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. def asReadOnlyCopy(): EmptyHashedRelation.type

    Returns a read-only copy of this, to be safely used in current thread.

    Returns a read-only copy of this, to be safely used in current thread.

    Definition Classes
    EmptyHashedRelation → HashedRelation
  6. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  7. def close(): Unit

    Release any used resources.

    Release any used resources.

    Definition Classes
    EmptyHashedRelation → HashedRelation
  8. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  9. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  10. def estimatedSize: Long
    Definition Classes
    EmptyHashedRelation → KnownSizeEstimation
  11. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  12. def get(key: InternalRow): Iterator[InternalRow]

    Returns matched rows.

    Returns matched rows.

    Returns null if there is no matched rows.

    Definition Classes
    EmptyHashedRelation → HashedRelation
  13. def get(key: Long): Iterator[InternalRow]

    Returns matched rows for a key that has only one column with LongType.

    Returns matched rows for a key that has only one column with LongType.

    Returns null if there is no matched rows.

    Definition Classes
    EmptyHashedRelation → HashedRelation
  14. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  15. def getValue(key: InternalRow): InternalRow

    Returns the matched single row.

    Returns the matched single row.

    Definition Classes
    EmptyHashedRelation → HashedRelation
  16. def getValue(key: Long): InternalRow

    Returns the matched single row with key that have only one column of LongType.

    Returns the matched single row with key that have only one column of LongType.

    Definition Classes
    EmptyHashedRelation → HashedRelation
  17. def getValueWithKeyIndex(key: InternalRow): ValueRowWithKeyIndex

    Returns key index and matched single row.

    Returns key index and matched single row. This is for unique key case.

    Returns null if there is no matched rows.

    Definition Classes
    HashedRelation
  18. def getWithKeyIndex(key: InternalRow): Iterator[ValueRowWithKeyIndex]

    Returns an iterator for key index and matched rows.

    Returns an iterator for key index and matched rows.

    Returns null if there is no matched rows.

    Definition Classes
    HashedRelation
  19. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  20. def keyIsUnique: Boolean

    Returns true iff all the keys are unique.

    Returns true iff all the keys are unique.

    Definition Classes
    EmptyHashedRelation → HashedRelation
  21. def keys(): Iterator[InternalRow]

    Returns an iterator for keys of InternalRow type.

    Returns an iterator for keys of InternalRow type.

    Definition Classes
    EmptyHashedRelation → HashedRelation
  22. def maxNumKeysIndex: Int

    Returns the maximum number of allowed keys index.

    Returns the maximum number of allowed keys index.

    Definition Classes
    HashedRelation
  23. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  24. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  25. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  26. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  27. def valuesWithKeyIndex(): Iterator[ValueRowWithKeyIndex]

    Returns an iterator for keys index and rows of InternalRow type.

    Returns an iterator for keys index and rows of InternalRow type.

    Definition Classes
    HashedRelation
  28. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  29. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  30. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()

Inherited from Serializable

Inherited from Serializable

Inherited from Product

Inherited from Equals

Inherited from HashedRelation

Inherited from KnownSizeEstimation

Inherited from AnyRef

Inherited from Any

Ungrouped