Stream

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

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

   Definition Classes

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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

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   Annotations

   @throws( ... )

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

   Definition Classes

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9. def equals(arg0: Any): Boolean

   Definition Classes

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10. def filter(fun: (T) ⇒ Boolean, description: String = null): Stream[T]

    reserve records when fun(T) == true

    reserve records when fun(T) == true

    fun

    the filter

    returns

    a new stream after filter

11. def finalize(): Unit

    Attributes

    protected[java.lang]

    Definition Classes

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    Annotations

    @throws( classOf[java.lang.Throwable] )

12. def flatMap[R](fun: (T) ⇒ TraversableOnce[R], description: String = null): Stream[R]

    convert a value[T] to a list of value[R]

    convert a value[T] to a list of value[R]

    fun

    function

    description

    the description message for this operation

    returns

    a new stream with type [R]

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

    Definition Classes

    AnyRef → Any

14. def groupBy[Group](fun: (T) ⇒ Group, parallelism: Int = 1, description: String = null): Stream[T]

    Group by fun(T)

    Group by fun(T)

    For example, we have T type, People(name: String, gender: String, age: Int) groupBy[People](_.gender) will group the people by gender.

    You can append other combinators after groupBy

    For example,

    Stream[People].groupBy(_.gender).flatmap(..).filter.(..).reduce(..)

    fun

    group by function

    parallelism

    parallelism level

    description

    the description

    returns

    the grouped stream

15. def hashCode(): Int

    Definition Classes

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16. final def isInstanceOf[T0]: Boolean

    Definition Classes

    Any

17. def log(): Unit

    Log to task log file

18. def map[R](fun: (T) ⇒ R, description: String = null): Stream[R]

    convert value[T] to value[R]

    convert value[T] to value[R]

    fun

    function

    returns

    a new stream with type [R]

19. def merge(other: Stream[T], description: String = null): Stream[T]

    Merge data from two stream into one

    Merge data from two stream into one

    other

    the other stream

    returns

    the merged stream

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

    Definition Classes

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21. final def notify(): Unit

    Definition Classes

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22. final def notifyAll(): Unit

    Definition Classes

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23. def process[R](processor: Class[_ <: Task], parallism: Int, conf: UserConfig = UserConfig.empty, description: String = null): Stream[R]

    connect with a low level Processor(TaskDescription)

    connect with a low level Processor(TaskDescription)

    processor

    a user defined processor

    returns

    new stream after processing with type [R]

24. def reduce(fun: (T, T) ⇒ T, description: String = null): Stream[T]

    Reduce opeartion

    Reduce opeartion

    fun

    reduction function

    description

    description message for this operator

    returns

    a new stream after reduction

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

    Definition Classes

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26. def toString(): String

    Definition Classes

    AnyRef → Any

27. final def wait(): Unit

    Definition Classes

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    Annotations

    @throws( ... )

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

    Definition Classes

    AnyRef

    Annotations

    @throws( ... )

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

    Definition Classes

    AnyRef

    Annotations

    @throws( ... )