com.twitter.scalding

Source

abstract class Source extends Serializable

Every source must have a correct toString method. If you use case classes for instances of sources, you will get this for free. This is one of the several reasons we recommend using cases classes

java.io.Serializable is needed if the Source is going to have any methods attached that run on mappers or reducers, which will happen if you implement transformForRead or transformForWrite.

Linear Supertypes
Serializable, AnyRef, Any
Known Subclasses
CodecSource, Csv, DailyPrefixSuffixMostRecentSource, DailyPrefixSuffixSource, DailySuffixCsv, DailySuffixMostRecentCsv, DailySuffixMostRecentSource, DailySuffixSource, DailySuffixTsv, DailySuffixTypedTsv, DelimitedScheme, FileSource, FixedPathSource, FixedPathTypedDelimited, HourlySuffixCsv, HourlySuffixMostRecentSource, HourlySuffixSource, HourlySuffixTsv, HourlySuffixTypedTsv, IterableSource, LocalSourceOverride, LocalTapSource, Mappable, Mappable1, Mappable10, Mappable11, Mappable12, Mappable13, Mappable14, Mappable15, Mappable16, Mappable17, Mappable18, Mappable19, Mappable2, Mappable20, Mappable21, Mappable22, Mappable3, Mappable4, Mappable5, Mappable6, Mappable7, Mappable8, Mappable9, MostRecentGoodSource, MultipleDelimitedFiles, MultipleSequenceFiles, MultipleTextLineFiles, MultipleTsvFiles, MultipleWritableSequenceFiles, NullSource, OffsetTextLine, OptionalSource, Osv, PartitionSchemed, PartitionSource, PartitionedDelimitedSource, PartitionedSequenceFile, PartitionedTextLine, PartitionedTsv, SchemedSource, SequenceFile, SequenceFileScheme, SingleMappable, SuccessFileSource, TemplateSource, TemplatedSequenceFile, TemplatedTsv, TextLine, TextLineScheme, TextSourceScheme, TimePathedSource, TimeSeqPathedSource, Tsv, TypedDelimited, TypedSequenceFile, WritableSequenceFile, WritableSequenceFileScheme
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Visibility
  1. Public
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Instance Constructors

  1. new Source()

Abstract Value Members

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

    Subclasses of Source MUST override this method.

    Subclasses of Source MUST override this method. They may call out to TestTapFactory for making Taps suitable for testing.

Concrete 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 checkFlowDefNotNull(implicit flowDef: FlowDef, mode: Mode): Unit

    Attributes
    protected

  8. def clone(): AnyRef

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

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

    Definition Classes
    AnyRef

  10. def equals(arg0: Any): Boolean

    Definition Classes
    AnyRef → Any

  11. def finalize(): Unit

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

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

    Definition Classes
    AnyRef → Any

  13. def hashCode(): Int

    Definition Classes
    AnyRef → Any

  14. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any

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

    Definition Classes
    AnyRef

  16. final def notify(): Unit

    Definition Classes
    AnyRef

  17. final def notifyAll(): Unit

    Definition Classes
    AnyRef

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

  19. def sourceId: String

    This is a name the refers to this exact instance of the source (put another way, if s1.

    This is a name the refers to this exact instance of the source (put another way, if s1.sourceId == s2.sourceId, the job should work the same if one is replaced with the other

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

    Definition Classes
    AnyRef

  21. def toString(): String

    Definition Classes
    AnyRef → Any

  22. def transformForRead(pipe: Pipe): Pipe

    Attributes
    protected

  23. def transformForWrite(pipe: Pipe): Pipe

    Attributes
    protected

  24. def transformInTest: Boolean

    The mock passed in to scalding.

    The mock passed in to scalding.JobTest may be considered as a mock of the Tap or the Source. By default, as of 0.9.0, it is considered as a Mock of the Source. If you set this to true, the mock in TestMode will be considered to be a mock of the Tap (which must be transformed) and not the Source.

  25. def validateTaps(mode: Mode): Unit

  26. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

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

Deprecated Value Members

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

    Annotations
    @deprecated
    Deprecated

    (Since version 0.9.0) replace with Mappable.toIterator

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

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