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], Traceable, FlowElement, Serializable, ScopedElement, AnyRef, Any
Ordering
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  2. By inheritance
Inherited
  1. NullTap
  2. SinkTap
  3. Tap
  4. Traceable
  5. FlowElement
  6. Serializable
  7. ScopedElement
  8. AnyRef
  9. Any
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Visibility
  1. Public
  2. All

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( classOf[java.io.IOException] )

  9. def createResource(conf: Config): Boolean

    Definition Classes
    NullTap → Tap

  10. def createResource(arg0: FlowProcess[_ <: Config]): Boolean

    Definition Classes
    Tap
    Annotations
    @throws( classOf[java.io.IOException] )

  11. def deleteResource(conf: Config): Boolean

    Definition Classes
    NullTap → Tap

  12. def deleteResource(arg0: FlowProcess[_ <: Config]): Boolean

    Definition Classes
    Tap
    Annotations
    @throws( classOf[java.io.IOException] )

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

    Definition Classes
    AnyRef

  14. def equals(arg0: Any): Boolean

    Definition Classes
    Tap → AnyRef → Any

  15. def finalize(): Unit

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

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

    Definition Classes
    Tap

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

    Definition Classes
    AnyRef → Any

  18. def getConfigDef(): ConfigDef

    Definition Classes
    Tap → ScopedElement

  19. def getFullIdentifier(arg0: Config): String

    Definition Classes
    Tap

  20. def getFullIdentifier(arg0: FlowProcess[_ <: Config]): String

    Definition Classes
    Tap

  21. def getIdentifier(): String

    Definition Classes
    NullTap → Tap

  22. def getModifiedTime(conf: Config): Long

    Definition Classes
    NullTap → Tap

  23. def getModifiedTime(arg0: FlowProcess[_ <: Config]): Long

    Definition Classes
    Tap
    Annotations
    @throws( classOf[java.io.IOException] )

  24. def getNodeConfigDef(): ConfigDef

    Definition Classes
    Tap → ScopedElement

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

    Definition Classes
    Tap

  26. def getSinkFields(): Fields

    Definition Classes
    Tap

  27. def getSinkMode(): SinkMode

    Definition Classes
    Tap

  28. def getSourceFields(): Fields

    Definition Classes
    SinkTap → Tap

  29. def getStepConfigDef(): ConfigDef

    Definition Classes
    Tap → ScopedElement

  30. def getTrace(): String

    Definition Classes
    Tap → Traceable

  31. def hasConfigDef(): Boolean

    Definition Classes
    Tap → ScopedElement

  32. def hasNodeConfigDef(): Boolean

    Definition Classes
    Tap → ScopedElement

  33. def hasStepConfigDef(): Boolean

    Definition Classes
    Tap → ScopedElement

  34. def hashCode(): Int

    Definition Classes
    Tap → AnyRef → Any

  35. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any

  36. def isKeep(): Boolean

    Definition Classes
    Tap

  37. def isReplace(): Boolean

    Definition Classes
    Tap

  38. def isSink(): Boolean

    Definition Classes
    Tap

  39. def isSource(): Boolean

    Definition Classes
    SinkTap → Tap

  40. def isTemporary(): Boolean

    Definition Classes
    Tap

  41. def isUpdate(): Boolean

    Definition Classes
    Tap

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

    Definition Classes
    AnyRef

  43. final def notify(): Unit

    Definition Classes
    AnyRef

  44. final def notifyAll(): Unit

    Definition Classes
    AnyRef

  45. def openForRead(arg0: FlowProcess[_ <: Config], arg1: Void): TupleEntryIterator

    Definition Classes
    SinkTap → Tap
    Annotations
    @throws( classOf[java.io.IOException] )

  46. def openForRead(arg0: FlowProcess[_ <: Config]): TupleEntryIterator

    Definition Classes
    Tap
    Annotations
    @throws( classOf[java.io.IOException] )

  47. def openForWrite(flowProcess: FlowProcess[_ <: Config], output: Output): TupleEntryCollector

    Definition Classes
    NullTap → Tap

  48. def openForWrite(arg0: FlowProcess[_ <: Config]): TupleEntryCollector

    Definition Classes
    Tap
    Annotations
    @throws( classOf[java.io.IOException] )

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

    Definition Classes
    Tap → ScopedElement

  50. def prepareResourceForRead(arg0: Config): Boolean

    Definition Classes
    SinkTap → Tap
    Annotations
    @throws( classOf[java.io.IOException] )

  51. def prepareResourceForWrite(arg0: Config): Boolean

    Definition Classes
    Tap
    Annotations
    @throws( classOf[java.io.IOException] )

  52. def presentSinkFields(arg0: FlowProcess[_ <: Config], arg1: Fields): Unit

    Definition Classes
    Tap

  53. def presentSourceFields(arg0: FlowProcess[_ <: Config], arg1: Fields): Unit

    Definition Classes
    Tap

  54. def resolveIncomingOperationArgumentFields(arg0: Scope): Fields

    Definition Classes
    Tap → ScopedElement

  55. def resolveIncomingOperationPassThroughFields(arg0: Scope): Fields

    Definition Classes
    Tap → ScopedElement

  56. def resourceExists(conf: Config): Boolean

    Definition Classes
    NullTap → Tap

  57. def resourceExists(arg0: FlowProcess[_ <: Config]): Boolean

    Definition Classes
    Tap
    Annotations
    @throws( classOf[java.io.IOException] )

  58. def retrieveSinkFields(arg0: FlowProcess[_ <: Config]): Fields

    Definition Classes
    Tap

  59. def retrieveSourceFields(arg0: FlowProcess[_ <: Config]): Fields

    Definition Classes
    Tap

  60. def rollbackResource(arg0: Config): Boolean

    Definition Classes
    Tap
    Annotations
    @throws( classOf[java.io.IOException] )

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

    Attributes
    protected[cascading.tap]
    Definition Classes
    Tap

  62. def sinkConfInit(arg0: FlowProcess[_ <: Config], arg1: Config): Unit

    Definition Classes
    Tap

  63. def sourceConfInit(arg0: FlowProcess[_ <: Config], arg1: Config): Unit

    Definition Classes
    SinkTap → Tap

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

    Definition Classes
    AnyRef

  65. def toString(): String

    Definition Classes
    Tap → AnyRef → Any

  66. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from SinkTap[Config, Output]

Inherited from Tap[Config, Void, Output]

Inherited from Traceable

Inherited from FlowElement

Inherited from Serializable

Inherited from ScopedElement

Inherited from AnyRef

Inherited from Any

Ungrouped