com.twitter.scalding

TupleArity

trait TupleArity extends AnyRef

Mixed in to both TupleConverter and TupleSetter to improve arity safety of cascading jobs before we run anything on Hadoop.

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KeyValueList, OrderedConstructorConverter, ReflectionSetter, ReflectionTupleConverter, ToMap, TupleConverter, TupleSetter
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Abstract Value Members

  1. abstract def arity: Int

    Return the arity of product types, should probably only be used implicitly The use case here is to see how many fake field names we need in Cascading to hold an intermediate value for mapReduceMap

Concrete Value Members

  1. final def !=(arg0: AnyRef): Boolean

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  2. final def !=(arg0: Any): Boolean

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  3. final def ##(): Int

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  4. final def ==(arg0: AnyRef): Boolean

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  5. final def ==(arg0: Any): Boolean

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  6. final def asInstanceOf[T0]: T0

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  7. def assertArityMatches(f: Fields): Unit

    assert that the arity of this setter matches the fields given.

    assert that the arity of this setter matches the fields given. if arity == -1, we can't check, and if Fields is not a definite size, (such as Fields.ALL), we also cannot check, so this should only be considered a weak check.

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

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  10. def equals(arg0: Any): Boolean

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  11. def finalize(): Unit

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

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  13. def hashCode(): Int

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  14. final def isInstanceOf[T0]: Boolean

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

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  16. final def notify(): Unit

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  17. final def notifyAll(): Unit

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

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  19. def toString(): String

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  20. final def wait(): Unit

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

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

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