com.twitter.scalding

JsonLine

case class JsonLine(p: String, fields: Fields = cascading.tuple.Fields.ALL, sinkMode: SinkMode = cascading.tap.SinkMode.REPLACE, transformInTest: Boolean = false, failOnEmptyLines: Boolean = true) extends FixedPathSource with TextLineScheme with Product with Serializable

This Source writes out the TupleEntry as a simple JSON object, using the field names as keys and the string representation of the values.

TODO: it would be nice to have a way to add read/write transformations to pipes that doesn't require extending the sources and overriding methods.

failOnEmptyLines

When set to false, it just skips empty lines instead of failing the jobs. Defaults to true for backwards compatibility.

Linear Supertypes
Serializable, Product, Equals, TextLineScheme, SingleMappable[String], Mappable[String], typed.TypedSource[String], TextSourceScheme, FixedPathSource, FileSource, HfsTapProvider, LocalSourceOverride, SchemedSource, Source, Serializable, AnyRef, Any
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Inherited
  1. JsonLine
  2. Serializable
  3. Product
  4. Equals
  5. TextLineScheme
  6. SingleMappable
  7. Mappable
  8. TypedSource
  9. TextSourceScheme
  10. FixedPathSource
  11. FileSource
  12. HfsTapProvider
  13. LocalSourceOverride
  14. SchemedSource
  15. Source
  16. Serializable
  17. AnyRef
  18. Any
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Instance Constructors

  1. new JsonLine(p: String, fields: Fields = cascading.tuple.Fields.ALL, sinkMode: SinkMode = cascading.tap.SinkMode.REPLACE, transformInTest: Boolean = false, failOnEmptyLines: Boolean = true)

    failOnEmptyLines

    When set to false, it just skips empty lines instead of failing the jobs. Defaults to true for backwards compatibility.

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: (String) ⇒ U): typed.TypedSource[U]

    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 converter[U >: String]: TupleConverter[U]

    Definition Classes
    SingleMappable → TypedSource

  11. def createHdfsReadTap(hdfsMode: Hdfs): Tap[JobConf, _, _]

    Attributes
    protected
    Definition Classes
    FileSource

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

    Definition Classes
    HfsTapProvider

  13. def createLocalTap(sinkMode: SinkMode): Tap[JobConf, _, _]

    Definition Classes
    LocalSourceOverride

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

    Definition Classes
    FileSource → Source

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

    Definition Classes
    AnyRef

  16. def equals(that: Any): Boolean

    Definition Classes
    FixedPathSource → AnyRef → Any

  17. val failOnEmptyLines: Boolean

    When set to false, it just skips empty lines instead of failing the jobs.

    When set to false, it just skips empty lines instead of failing the jobs. Defaults to true for backwards compatibility.

  18. val fields: Fields

  19. def finalize(): Unit

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

  20. final def flatMapTo[U](out: Fields)(mf: (String) ⇒ TraversableOnce[U])(implicit flowDef: FlowDef, mode: Mode, setter: TupleSetter[U]): Pipe

    Definition Classes
    Mappable

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

    Definition Classes
    AnyRef → Any

  22. def goodHdfsPaths(hdfsMode: Hdfs): Iterable[String]

    Attributes
    protected
    Definition Classes
    FileSource

  23. def hashCode(): Int

    Definition Classes
    FixedPathSource → AnyRef → Any

  24. def hdfsPaths: Iterable[String]

    Definition Classes
    FixedPathSource → FileSource

  25. def hdfsReadPathsAreGood(conf: Configuration): Boolean

    Attributes
    protected
    Definition Classes
    FileSource

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

    Definition Classes
    TextSourceScheme → SchemedSource

  27. def hdfsWritePath: String

    Definition Classes
    FixedPathSource → FileSource

  28. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any

  29. def localPaths: Iterable[String]

    Definition Classes
    FixedPathSource → LocalSourceOverride

  30. def localScheme: cascading.scheme.local.TextLine

    Definition Classes
    TextSourceScheme → SchemedSource

  31. def localWritePath: String

    Definition Classes
    LocalSourceOverride

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

    Definition Classes
    Mappable

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

    Definition Classes
    AnyRef

  34. final def notify(): Unit

    Definition Classes
    AnyRef

  35. final def notifyAll(): Unit

    Definition Classes
    AnyRef

  36. val p: String

  37. def pathIsGood(p: String, conf: Configuration): Boolean

    Attributes
    protected
    Definition Classes
    FileSource

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

    Definition Classes
    Source

  39. val sinkMode: SinkMode

    Definition Classes
    JsonLine → SchemedSource

  40. def sourceFields: Fields

    Definition Classes
    TextLineScheme → TypedSource

  41. def sourceId: String

    Definition Classes
    Source

  42. def stripTrailing(path: String): String

    Attributes
    protected
    Definition Classes
    FixedPathSource

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

    Definition Classes
    AnyRef

  44. val textEncoding: String

    Definition Classes
    TextSourceScheme

  45. def toIterator(implicit config: Config, mode: Mode): Iterator[String]

    Definition Classes
    Mappable

  46. def toString(): String

    Definition Classes
    JsonLine → FixedPathSource → AnyRef → Any

  47. def transformForRead(pipe: Pipe): Pipe

    Definition Classes
    JsonLine → Source

  48. def transformForWrite(pipe: Pipe): Pipe

    Definition Classes
    JsonLine → Source

  49. val transformInTest: Boolean

    Definition Classes
    JsonLine → Source

  50. def validateTaps(mode: Mode): Unit

    Definition Classes
    FileSource → Source

  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

    Definition Classes
    Source

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 TextLineScheme

Inherited from SingleMappable[String]

Inherited from Mappable[String]

Inherited from typed.TypedSource[String]

Inherited from TextSourceScheme

Inherited from FixedPathSource

Inherited from FileSource

Inherited from HfsTapProvider

Inherited from LocalSourceOverride

Inherited from SchemedSource

Inherited from Source

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped