com.twitter.scalding.typed

PartitionedDelimitedSource

case class PartitionedDelimitedSource[P, T](path: String, template: String, separator: String, fields: Fields, skipHeader: Boolean = false, writeHeader: Boolean = false, quote: String = "\"", strict: Boolean = true, safe: Boolean = true)(implicit mt: Manifest[T], valueSetter: TupleSetter[T], valueConverter: TupleConverter[T], partitionSetter: TupleSetter[P], partitionConverter: TupleConverter[P]) extends SchemedSource with PartitionSchemed[P, T] with Serializable with Product with Serializable

Scalding source to read or write partitioned delimited text.

For writing it expects a pair of (P, T), where P is the data used for partitioning and T is the output to write out. Below is an example.

val data = List(
  (("a", "x"), ("i", 1)),
  (("a", "y"), ("j", 2)),
  (("b", "z"), ("k", 3))
)
IterablePipe(data, flowDef, mode)
  .write(PartitionedDelimited[(String, String), (String, Int)](args("out"), "col1=%s/col2=%s"))

For reading it produces a pair (P, T) where P is the partition data and T is data in the files. Below is an example.

val in: TypedPipe[((String, String), (String, Int))] = PartitionedDelimited[(String, String), (String, Int)](args("in"), "col1=%s/col2=%s")
Linear Supertypes
Serializable, Product, Equals, PartitionSchemed[P, T], HfsTapProvider, Mappable[(P, T)], TypedSource[(P, T)], TypedSink[(P, T)], SchemedSource, Source, Serializable, AnyRef, Any
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Inherited
  1. PartitionedDelimitedSource
  2. Serializable
  3. Product
  4. Equals
  5. PartitionSchemed
  6. HfsTapProvider
  7. Mappable
  8. TypedSource
  9. TypedSink
  10. SchemedSource
  11. Source
  12. Serializable
  13. AnyRef
  14. Any
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Instance Constructors

  1. new PartitionedDelimitedSource(path: String, template: String, separator: String, fields: Fields, skipHeader: Boolean = false, writeHeader: Boolean = false, quote: String = "\"", strict: Boolean = true, safe: Boolean = true)(implicit mt: Manifest[T], valueSetter: TupleSetter[T], valueConverter: TupleConverter[T], partitionSetter: TupleSetter[P], partitionConverter: TupleConverter[P])

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. def andThen[U](fn: ((P, T)) ⇒ U): TypedSource[U]

    Transform this TypedSource into another by mapping after.

    Transform this TypedSource into another by mapping after. We don't call this map because of conflicts with Mappable, unfortunately

    Definition Classes
    TypedSource

  7. final def asInstanceOf[T0]: T0

    Definition Classes
    Any

  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. def contraMap[U](fn: (U) ⇒ (P, T)): TypedSink[U]

    Transform this sink into another type by applying a function first

    Transform this sink into another type by applying a function first

    Definition Classes
    TypedSink

  11. def converter[U >: (P, T)]: TupleConverter[U]

    Combine both the partition and value converter to extract the data from a flat cascading tuple into a pair of P and T.

    Combine both the partition and value converter to extract the data from a flat cascading tuple into a pair of P and T.

    Definition Classes
    PartitionSchemed → TypedSource

  12. def createHfsTap(scheme: Scheme[JobConf, RecordReader[_, _], OutputCollector[_, _], _, _], path: String, sinkMode: SinkMode): Hfs

    Definition Classes
    HfsTapProvider

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

    Creates the taps for local and hdfs mode.

    Creates the taps for local and hdfs mode.

    Definition Classes
    PartitionSchemed → Source

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

    Definition Classes
    AnyRef

  15. val fields: Fields

    Definition Classes
    PartitionedDelimitedSource → PartitionSchemed

  16. def finalize(): Unit

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

  17. final def flatMapTo[U](out: Fields)(mf: ((P, T)) ⇒ TraversableOnce[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

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

    Definition Classes
    AnyRef → Any

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

    The scheme to use if the source is on hdfs.

    The scheme to use if the source is on hdfs.

    Definition Classes
    PartitionedDelimitedSource → SchemedSource

  20. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any

  21. def localScheme: Scheme[Properties, InputStream, OutputStream, _, _]

    The scheme to use if the source is local.

    The scheme to use if the source is local.

    Definition Classes
    PartitionedDelimitedSource → SchemedSource

  22. final def mapTo[U](out: Fields)(mf: ((P, 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. implicit val partitionConverter: TupleConverter[P]

    Definition Classes
    PartitionedDelimitedSource → PartitionSchemed

  27. def partitionFields: Fields

    Definition Classes
    PartitionSchemed

  28. implicit val partitionSetter: TupleSetter[P]

    Definition Classes
    PartitionedDelimitedSource → PartitionSchemed

  29. val path: String

    Definition Classes
    PartitionedDelimitedSource → PartitionSchemed

  30. val quote: String

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

    Definition Classes
    Source

  32. val safe: Boolean

  33. val separator: String

  34. def setter[U <: (P, T)]: TupleSetter[U]

    Flatten a pair of P and T into a cascading tuple.

    Flatten a pair of P and T into a cascading tuple.

    Definition Classes
    PartitionSchemed → TypedSink

  35. def sinkFields: Fields

    Definition Classes
    PartitionSchemed → TypedSink

  36. val sinkMode: SinkMode

    Definition Classes
    SchemedSource

  37. val skipHeader: Boolean

  38. def sourceFields: Fields

    Definition Classes
    TypedSource

  39. 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

    Definition Classes
    Source

  40. val strict: Boolean

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

    Definition Classes
    AnyRef

  42. val template: String

    Definition Classes
    PartitionedDelimitedSource → PartitionSchemed

  43. def toIterator(implicit config: Config, mode: Mode): Iterator[(P, 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
    Mappable

  44. def transformForRead(pipe: Pipe): Pipe

    Attributes
    protected
    Definition Classes
    Source

  45. def transformForWrite(pipe: Pipe): Pipe

    Attributes
    protected
    Definition Classes
    Source

  46. 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.

    Definition Classes
    Source

  47. val types: Array[Class[_]]

  48. def validateTaps(mode: Mode): Unit

    Definition Classes
    Source

  49. implicit val valueConverter: TupleConverter[T]

    Definition Classes
    PartitionedDelimitedSource → PartitionSchemed

  50. implicit val valueSetter: TupleSetter[T]

    Definition Classes
    PartitionedDelimitedSource → PartitionSchemed

  51. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  54. 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

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

    Definition Classes
    Source

  55. val writeHeader: Boolean

Deprecated Value Members

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

    Definition Classes
    Source
    Annotations
    @deprecated
    Deprecated

    (Since version 0.9.0) replace with Mappable.toIterator

Inherited from Serializable

Inherited from Product

Inherited from Equals

Inherited from PartitionSchemed[P, T]

Inherited from HfsTapProvider

Inherited from Mappable[(P, T)]

Inherited from TypedSource[(P, T)]

Inherited from TypedSink[(P, T)]

Inherited from SchemedSource

Inherited from Source

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped