com.twitter.scalding

IterableSource

case class IterableSource[T](iter: Iterable[T], inFields: Fields = cascading.tuple.Fields.NONE)(implicit set: TupleSetter[T], converter: TupleConverter[T]) extends Source with Mappable[T] with Product with Serializable

Allows working with an iterable object defined in the job (on the submitter) to be used within a Job as you would a Pipe/RichPipe

These lists should probably be very tiny by Hadoop standards. If they are getting large, you should probably dump them to HDFS and use the normal mechanisms to address the data (a FileSource).

Linear Supertypes
Serializable, Product, Equals, Mappable[T], Source, Serializable, AnyRef, Any
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  1. IterableSource
  2. Serializable
  3. Product
  4. Equals
  5. Mappable
  6. Source
  7. Serializable
  8. AnyRef
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Instance Constructors

  1. new IterableSource(iter: Iterable[T], inFields: Fields = cascading.tuple.Fields.NONE)(implicit set: TupleSetter[T], converter: TupleConverter[T])

Type Members

  1. type LocalScheme = Scheme[Properties, InputStream, OutputStream, _, _]

    Definition Classes
    Source

Value Members

  1. final def !=(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  2. final def !=(arg0: Any): Boolean

    Definition Classes
    Any

  3. final def ##(): Int

    Definition Classes
    AnyRef → Any

  4. final def ==(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  5. final def ==(arg0: Any): Boolean

    Definition Classes
    Any

  6. final def asInstanceOf[T0]: T0

    Definition Classes
    Any

  7. def castHfsTap(tap: Hfs): Tap[JobConf, RecordReader[_, _], OutputCollector[_, _]]

    Attributes
    protected
    Definition Classes
    Source

  8. def checkFlowDefNotNull(implicit flowDef: FlowDef, mode: Mode): Unit

    Attributes
    protected
    Definition Classes
    Source

  9. def clone(): AnyRef

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws()

  10. implicit val converter: TupleConverter[T]

    Definition Classes
    IterableSource → Mappable

  11. def createTap(readOrWrite: AccessMode)(implicit mode: Mode): Tap[_, _, _]

    Subclasses of Source MUST override this method.

    Subclasses of Source MUST override this method. The base only handles test modes, so you should invoke this method for test modes unless your Source has some special handling of testing.

    Definition Classes
    IterableSource → Source

  12. final def eq(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  13. def fields: Fields

  14. def finalize(): Unit

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws()

  15. def flatMapTo[U](out: Fields)(mf: (T) ⇒ Iterable[U])(implicit flowDef: FlowDef, mode: Mode, setter: TupleSetter[U]): Pipe

    If you want to filter, you should use this and output a 0 or 1 length Iterable.

    If you want to filter, you should use this and output a 0 or 1 length Iterable. Filter does not change column names, and we generally expect to change columns here

    Definition Classes
    Mappable

  16. final def getClass(): Class[_]

    Definition Classes
    AnyRef → Any

  17. def hdfsScheme: Scheme[JobConf, RecordReader[_, _], OutputCollector[_, _], _, _]

    Definition Classes
    IterableSource → Source

  18. val inFields: Fields

  19. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any

  20. val iter: Iterable[T]

  21. def localScheme: LocalScheme

    Definition Classes
    IterableSource → Source

  22. def mapTo[U](out: Fields)(mf: (T) ⇒ U)(implicit flowDef: FlowDef, mode: Mode, setter: TupleSetter[U]): Pipe

    Definition Classes
    Mappable

  23. final def ne(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  24. final def notify(): Unit

    Definition Classes
    AnyRef

  25. final def notifyAll(): Unit

    Definition Classes
    AnyRef

  26. def read(implicit flowDef: FlowDef, mode: Mode): Pipe

    Definition Classes
    Source

  27. def readAtSubmitter[T](implicit mode: Mode, conv: TupleConverter[T]): Stream[T]

    Allows you to read a Tap on the submit node NOT FOR USE IN THE MAPPERS OR REDUCERS.

    Allows you to read a Tap on the submit node NOT FOR USE IN THE MAPPERS OR REDUCERS. Typical use might be to read in Job.next to determine if another job is needed

    Definition Classes
    Source

  28. def sourceFields: Fields

    Definition Classes
    Mappable

  29. final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes
    AnyRef

  30. def transformForRead(pipe: Pipe): Pipe

    Attributes
    protected
    Definition Classes
    Source

  31. def transformForWrite(pipe: Pipe): Pipe

    Attributes
    protected
    Definition Classes
    Source

  32. def validateTaps(mode: Mode): Unit

    Definition Classes
    Source

  33. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws()

  34. final def wait(arg0: Long, arg1: Int): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws()

  35. final def wait(arg0: Long): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws()

  36. def writeFrom(pipe: Pipe)(implicit flowDef: FlowDef, mode: Mode): Pipe

    write the pipe and return the input so it can be chained into the next operation

    write the pipe and return the input so it can be chained into the next operation

    Definition Classes
    Source

Inherited from Serializable

Inherited from Product

Inherited from Equals

Inherited from Mappable[T]

Inherited from Source

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped