Stream

Value Members

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

   

   Definition Classes

   AnyRef → Any

2. final def ##(): Int

   

   Definition Classes

   AnyRef → Any

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

   

   Definition Classes

   AnyRef → Any

4. final def asInstanceOf[T0]: T0

   

   Definition Classes

   Any

5. def clone(): AnyRef

   

   Attributes

   protected[java.lang]

   Definition Classes

   AnyRef

   Annotations

   @throws( ... )

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

   

   Definition Classes

   AnyRef

7. def equals(arg0: Any): Boolean

   

   Definition Classes

   AnyRef → Any

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

   

   reserve records when fun(T) == true

   reserve records when fun(T) == true

   fun

   returns

9. def finalize(): Unit

   

   Attributes

   protected[java.lang]

   Definition Classes

   AnyRef

   Annotations

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

10. def flatMap[R](fun: (T) ⇒ TraversableOnce[R], description: String = null)(implicit arg0: ClassTag[R]): Stream[R]

    

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

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

    R

    return type

    fun

    function

    description

    the descripton message for this opeartion

    returns

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

    

    Definition Classes

    AnyRef → Any

12. def groupBy[Group](fun: (T) ⇒ Group, parallism: 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(..)

    Group

    fun

    parallism

    returns

13. def hashCode(): Int

    

    Definition Classes

    AnyRef → Any

14. final def isInstanceOf[T0]: Boolean

    

    Definition Classes

    Any

15. def log(): Unit

    

    Log to task log file

16. def map[R](fun: (T) ⇒ R, description: String = null)(implicit arg0: ClassTag[R]): Stream[R]

    

    convert value[T] to value[R]

    convert value[T] to value[R]

    R

    return type

    fun

    function

    returns

17. 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

    returns

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

    

    Definition Classes

    AnyRef

19. final def notify(): Unit

    

    Definition Classes

    AnyRef

20. final def notifyAll(): Unit

    

    Definition Classes

    AnyRef

21. def process[R](processor: Class[_ <: Task], parallism: Int, description: String = null)(implicit arg0: ClassTag[R]): Stream[R]

    

    connect with a low level Processor(TaskDescription)

    connect with a low level Processor(TaskDescription)

    R

    processor

    parallism

    returns

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

    

    Reduce opeartion

    Reduce opeartion

    fun

    description

    description message for this operator

    returns

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

    

    Definition Classes

    AnyRef

24. def toString(): String

    

    Definition Classes

    AnyRef → Any

25. final def wait(): Unit

    

    Definition Classes

    AnyRef

    Annotations

    @throws( ... )

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

    

    Definition Classes

    AnyRef

    Annotations

    @throws( ... )

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

    

    Definition Classes

    AnyRef

    Annotations

    @throws( ... )