com.twitter.scalding

NullTap

class NullTap[Config, Input, Output, SourceContext, SinkContext] extends SinkTap[Config, Output]

A tap that output nothing. It is used to drive execution of a task for side effect only. This can be used to drive a pipe without actually writing to HDFS.

Linear Supertypes
SinkTap[Config, Output], Tap[Config, Void, Output], FlowElement, Serializable, AnyRef, Any
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Inherited
  1. NullTap
  2. SinkTap
  3. Tap
  4. FlowElement
  5. Serializable
  6. AnyRef
  7. Any
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Visibility
  1. Public
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Instance Constructors

  1. new NullTap()

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 clone(): AnyRef

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

  8. def commitResource(arg0: Config): Boolean

    Definition Classes
    Tap
    Annotations
    @throws()

  9. def createResource(conf: Config): Boolean

    Definition Classes
    NullTap → Tap

  10. def deleteResource(conf: Config): Boolean

    Definition Classes
    NullTap → Tap

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

    Definition Classes
    AnyRef

  12. def equals(arg0: Any): Boolean

    Definition Classes
    Tap → AnyRef → Any

  13. def finalize(): Unit

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

  14. def flowConfInit(arg0: Flow[Config]): Unit

    Definition Classes
    Tap

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

    Definition Classes
    AnyRef → Any

  16. def getConfigDef(): ConfigDef

    Definition Classes
    Tap → FlowElement

  17. def getFullIdentifier(arg0: Config): String

    Definition Classes
    Tap

  18. def getIdentifier(): String

    Definition Classes
    NullTap → Tap

  19. def getModifiedTime(conf: Config): Long

    Definition Classes
    NullTap → Tap

  20. def getScheme(): Scheme[Config, Void, Output, _, _]

    Definition Classes
    Tap

  21. def getSinkFields(): Fields

    Definition Classes
    Tap

  22. def getSinkMode(): SinkMode

    Definition Classes
    Tap

  23. def getSourceFields(): Fields

    Definition Classes
    SinkTap → Tap

  24. def getStepConfigDef(): ConfigDef

    Definition Classes
    Tap → FlowElement

  25. def getTrace(): String

    Definition Classes
    Tap

  26. def hasConfigDef(): Boolean

    Definition Classes
    Tap → FlowElement

  27. def hasStepConfigDef(): Boolean

    Definition Classes
    Tap → FlowElement

  28. def hashCode(): Int

    Definition Classes
    Tap → AnyRef → Any

  29. def isEquivalentTo(arg0: FlowElement): Boolean

    Definition Classes
    Tap → FlowElement

  30. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any

  31. def isKeep(): Boolean

    Definition Classes
    Tap

  32. def isReplace(): Boolean

    Definition Classes
    Tap

  33. def isSink(): Boolean

    Definition Classes
    Tap

  34. def isSource(): Boolean

    Definition Classes
    SinkTap → Tap

  35. def isTemporary(): Boolean

    Definition Classes
    Tap

  36. def isUpdate(): Boolean

    Definition Classes
    Tap

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

    Definition Classes
    AnyRef

  38. final def notify(): Unit

    Definition Classes
    AnyRef

  39. final def notifyAll(): Unit

    Definition Classes
    AnyRef

  40. def openForRead(arg0: FlowProcess[Config], arg1: Void): TupleEntryIterator

    Definition Classes
    SinkTap → Tap
    Annotations
    @throws()

  41. def openForRead(arg0: FlowProcess[Config]): TupleEntryIterator

    Definition Classes
    Tap
    Annotations
    @throws()

  42. def openForWrite(flowProcess: FlowProcess[Config], output: Output): TupleEntryCollector

    Definition Classes
    NullTap → Tap

  43. def openForWrite(arg0: FlowProcess[Config]): TupleEntryCollector

    Definition Classes
    Tap
    Annotations
    @throws()

  44. def outgoingScopeFor(arg0: Set[Scope]): Scope

    Definition Classes
    Tap → FlowElement

  45. def presentSinkFields(arg0: FlowProcess[Config], arg1: Fields): Unit

    Definition Classes
    Tap

  46. def presentSourceFields(arg0: FlowProcess[Config], arg1: Fields): Unit

    Definition Classes
    Tap

  47. def resolveIncomingOperationArgumentFields(arg0: Scope): Fields

    Definition Classes
    Tap → FlowElement

  48. def resolveIncomingOperationPassThroughFields(arg0: Scope): Fields

    Definition Classes
    Tap → FlowElement

  49. def resourceExists(conf: Config): Boolean

    Definition Classes
    NullTap → Tap

  50. def retrieveSinkFields(arg0: FlowProcess[Config]): Fields

    Definition Classes
    Tap

  51. def retrieveSourceFields(arg0: FlowProcess[Config]): Fields

    Definition Classes
    Tap

  52. def rollbackResource(arg0: Config): Boolean

    Definition Classes
    Tap
    Annotations
    @throws()

  53. def setScheme(arg0: Scheme[Config, Void, Output, _, _]): Unit

    Attributes
    protected[cascading.tap]
    Definition Classes
    Tap

  54. def sinkConfInit(arg0: FlowProcess[Config], arg1: Config): Unit

    Definition Classes
    Tap

  55. def sourceConfInit(arg0: FlowProcess[Config], arg1: Config): Unit

    Definition Classes
    SinkTap → Tap

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

    Definition Classes
    AnyRef

  57. def toString(): String

    Definition Classes
    Tap → AnyRef → Any

  58. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws()

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

    Definition Classes
    AnyRef
    Annotations
    @throws()

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

    Definition Classes
    AnyRef
    Annotations
    @throws()

Inherited from SinkTap[Config, Output]

Inherited from Tap[Config, Void, Output]

Inherited from FlowElement

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped