odkl.analysis.spark.util

GroupingIterator

class GroupingIterator[Key, Value] extends Iterator[(Key, Seq[Value])]

Created by dmitriybugaichenko on 17.05.17.

Simple utility to apply zero-copying grouping on pre-sorted iterator

Linear Supertypes
Iterator[(Key, Seq[Value])], TraversableOnce[(Key, Seq[Value])], GenTraversableOnce[(Key, Seq[Value])], AnyRef, Any
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Inherited
  1. GroupingIterator
  2. Iterator
  3. TraversableOnce
  4. GenTraversableOnce
  5. AnyRef
  6. Any
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Visibility
  1. Public
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Instance Constructors

  1. new GroupingIterator(source: Iterator[(Key, Value)])(implicit arg0: ClassTag[Key], arg1: ClassTag[Value])

Type Members

  1. class GroupedIterator[B >: A] extends AbstractIterator[Seq[B]] with Iterator[Seq[B]]

    Definition Classes
    Iterator

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. def ++[B >: (Key, Seq[Value])](that: ⇒ GenTraversableOnce[B]): Iterator[B]

    Definition Classes
    Iterator

  5. def /:[B](z: B)(op: (B, (Key, Seq[Value])) ⇒ B): B

    Definition Classes
    TraversableOnce → GenTraversableOnce

  6. def :\[B](z: B)(op: ((Key, Seq[Value]), B) ⇒ B): B

    Definition Classes
    TraversableOnce → GenTraversableOnce

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

    Definition Classes
    AnyRef

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

    Definition Classes
    Any

  9. def addString(b: StringBuilder): StringBuilder

    Definition Classes
    TraversableOnce

  10. def addString(b: StringBuilder, sep: String): StringBuilder

    Definition Classes
    TraversableOnce

  11. def addString(b: StringBuilder, start: String, sep: String, end: String): StringBuilder

    Definition Classes
    TraversableOnce

  12. def aggregate[B](z: B)(seqop: (B, (Key, Seq[Value])) ⇒ B, combop: (B, B) ⇒ B): B

    Definition Classes
    TraversableOnce → GenTraversableOnce

  13. final def asInstanceOf[T0]: T0

    Definition Classes
    Any

  14. def buffered: BufferedIterator[(Key, Seq[Value])]

    Definition Classes
    Iterator

  15. def clone(): AnyRef

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

  16. def collect[B](pf: PartialFunction[(Key, Seq[Value]), B]): Iterator[B]

    Definition Classes
    Iterator
    Annotations
    @migration
    Migration

    (Changed in version 2.8.0) collect has changed. The previous behavior can be reproduced with toSeq.

  17. def collectFirst[B](pf: PartialFunction[(Key, Seq[Value]), B]): Option[B]

    Definition Classes
    TraversableOnce

  18. def contains(elem: Any): Boolean

    Definition Classes
    Iterator

  19. def copyToArray[B >: (Key, Seq[Value])](xs: Array[B], start: Int, len: Int): Unit

    Definition Classes
    Iterator → TraversableOnce → GenTraversableOnce

  20. def copyToArray[B >: (Key, Seq[Value])](xs: Array[B]): Unit

    Definition Classes
    TraversableOnce → GenTraversableOnce

  21. def copyToArray[B >: (Key, Seq[Value])](xs: Array[B], start: Int): Unit

    Definition Classes
    TraversableOnce → GenTraversableOnce

  22. def copyToBuffer[B >: (Key, Seq[Value])](dest: Buffer[B]): Unit

    Definition Classes
    TraversableOnce

  23. def corresponds[B](that: GenTraversableOnce[B])(p: ((Key, Seq[Value]), B) ⇒ Boolean): Boolean

    Definition Classes
    Iterator

  24. def count(p: ((Key, Seq[Value])) ⇒ Boolean): Int

    Definition Classes
    TraversableOnce → GenTraversableOnce

  25. def drop(n: Int): Iterator[(Key, Seq[Value])]

    Definition Classes
    Iterator

  26. def dropWhile(p: ((Key, Seq[Value])) ⇒ Boolean): Iterator[(Key, Seq[Value])]

    Definition Classes
    Iterator

  27. def duplicate: (Iterator[(Key, Seq[Value])], Iterator[(Key, Seq[Value])])

    Definition Classes
    Iterator

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

    Definition Classes
    AnyRef

  29. def equals(arg0: Any): Boolean

    Definition Classes
    AnyRef → Any

  30. def exists(p: ((Key, Seq[Value])) ⇒ Boolean): Boolean

    Definition Classes
    Iterator → TraversableOnce → GenTraversableOnce

  31. def filter(p: ((Key, Seq[Value])) ⇒ Boolean): Iterator[(Key, Seq[Value])]

    Definition Classes
    Iterator

  32. def filterNot(p: ((Key, Seq[Value])) ⇒ Boolean): Iterator[(Key, Seq[Value])]

    Definition Classes
    Iterator

  33. def finalize(): Unit

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

  34. def find(p: ((Key, Seq[Value])) ⇒ Boolean): Option[(Key, Seq[Value])]

    Definition Classes
    Iterator → TraversableOnce → GenTraversableOnce

  35. def flatMap[B](f: ((Key, Seq[Value])) ⇒ GenTraversableOnce[B]): Iterator[B]

    Definition Classes
    Iterator

  36. def fold[A1 >: (Key, Seq[Value])](z: A1)(op: (A1, A1) ⇒ A1): A1

    Definition Classes
    TraversableOnce → GenTraversableOnce

  37. def foldLeft[B](z: B)(op: (B, (Key, Seq[Value])) ⇒ B): B

    Definition Classes
    TraversableOnce → GenTraversableOnce

  38. def foldRight[B](z: B)(op: ((Key, Seq[Value]), B) ⇒ B): B

    Definition Classes
    TraversableOnce → GenTraversableOnce

  39. def forall(p: ((Key, Seq[Value])) ⇒ Boolean): Boolean

    Definition Classes
    Iterator → TraversableOnce → GenTraversableOnce

  40. def foreach[U](f: ((Key, Seq[Value])) ⇒ U): Unit

    Definition Classes
    Iterator → TraversableOnce → GenTraversableOnce

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

    Definition Classes
    AnyRef → Any

  42. def grouped[B >: (Key, Seq[Value])](size: Int): GroupedIterator[B]

    Definition Classes
    Iterator

  43. def hasDefiniteSize: Boolean

    Definition Classes
    Iterator → TraversableOnce → GenTraversableOnce

  44. def hasNext: Boolean

    Definition Classes
    GroupingIterator → Iterator

  45. def hashCode(): Int

    Definition Classes
    AnyRef → Any

  46. def indexOf[B >: (Key, Seq[Value])](elem: B): Int

    Definition Classes
    Iterator

  47. def indexWhere(p: ((Key, Seq[Value])) ⇒ Boolean): Int

    Definition Classes
    Iterator

  48. def isEmpty: Boolean

    Definition Classes
    Iterator → TraversableOnce → GenTraversableOnce

  49. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any

  50. def isTraversableAgain: Boolean

    Definition Classes
    Iterator → GenTraversableOnce

  51. def length: Int

    Definition Classes
    Iterator

  52. def map[B](f: ((Key, Seq[Value])) ⇒ B): Iterator[B]

    Definition Classes
    Iterator

  53. def max[B >: (Key, Seq[Value])](implicit cmp: Ordering[B]): (Key, Seq[Value])

    Definition Classes
    TraversableOnce → GenTraversableOnce

  54. def maxBy[B](f: ((Key, Seq[Value])) ⇒ B)(implicit cmp: Ordering[B]): (Key, Seq[Value])

    Definition Classes
    TraversableOnce → GenTraversableOnce

  55. def min[B >: (Key, Seq[Value])](implicit cmp: Ordering[B]): (Key, Seq[Value])

    Definition Classes
    TraversableOnce → GenTraversableOnce

  56. def minBy[B](f: ((Key, Seq[Value])) ⇒ B)(implicit cmp: Ordering[B]): (Key, Seq[Value])

    Definition Classes
    TraversableOnce → GenTraversableOnce

  57. def mkString: String

    Definition Classes
    TraversableOnce → GenTraversableOnce

  58. def mkString(sep: String): String

    Definition Classes
    TraversableOnce → GenTraversableOnce

  59. def mkString(start: String, sep: String, end: String): String

    Definition Classes
    TraversableOnce → GenTraversableOnce

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

    Definition Classes
    AnyRef

  61. def next(): (Key, Seq[Value])

    Definition Classes
    GroupingIterator → Iterator

  62. def nonEmpty: Boolean

    Definition Classes
    TraversableOnce → GenTraversableOnce

  63. final def notify(): Unit

    Definition Classes
    AnyRef

  64. final def notifyAll(): Unit

    Definition Classes
    AnyRef

  65. def padTo[A1 >: (Key, Seq[Value])](len: Int, elem: A1): Iterator[A1]

    Definition Classes
    Iterator

  66. def partition(p: ((Key, Seq[Value])) ⇒ Boolean): (Iterator[(Key, Seq[Value])], Iterator[(Key, Seq[Value])])

    Definition Classes
    Iterator

  67. def patch[B >: (Key, Seq[Value])](from: Int, patchElems: Iterator[B], replaced: Int): Iterator[B]

    Definition Classes
    Iterator

  68. def product[B >: (Key, Seq[Value])](implicit num: Numeric[B]): B

    Definition Classes
    TraversableOnce → GenTraversableOnce

  69. def reduce[A1 >: (Key, Seq[Value])](op: (A1, A1) ⇒ A1): A1

    Definition Classes
    TraversableOnce → GenTraversableOnce

  70. def reduceLeft[B >: (Key, Seq[Value])](op: (B, (Key, Seq[Value])) ⇒ B): B

    Definition Classes
    TraversableOnce

  71. def reduceLeftOption[B >: (Key, Seq[Value])](op: (B, (Key, Seq[Value])) ⇒ B): Option[B]

    Definition Classes
    TraversableOnce → GenTraversableOnce

  72. def reduceOption[A1 >: (Key, Seq[Value])](op: (A1, A1) ⇒ A1): Option[A1]

    Definition Classes
    TraversableOnce → GenTraversableOnce

  73. def reduceRight[B >: (Key, Seq[Value])](op: ((Key, Seq[Value]), B) ⇒ B): B

    Definition Classes
    TraversableOnce → GenTraversableOnce

  74. def reduceRightOption[B >: (Key, Seq[Value])](op: ((Key, Seq[Value]), B) ⇒ B): Option[B]

    Definition Classes
    TraversableOnce → GenTraversableOnce

  75. def reversed: List[(Key, Seq[Value])]

    Attributes
    protected[this]
    Definition Classes
    TraversableOnce

  76. def sameElements(that: Iterator[_]): Boolean

    Definition Classes
    Iterator

  77. def scanLeft[B](z: B)(op: (B, (Key, Seq[Value])) ⇒ B): Iterator[B]

    Definition Classes
    Iterator

  78. def scanRight[B](z: B)(op: ((Key, Seq[Value]), B) ⇒ B): Iterator[B]

    Definition Classes
    Iterator

  79. def seq: Iterator[(Key, Seq[Value])]

    Definition Classes
    Iterator → TraversableOnce → GenTraversableOnce

  80. def size: Int

    Definition Classes
    TraversableOnce → GenTraversableOnce

  81. def slice(from: Int, until: Int): Iterator[(Key, Seq[Value])]

    Definition Classes
    Iterator

  82. def sliding[B >: (Key, Seq[Value])](size: Int, step: Int): GroupedIterator[B]

    Definition Classes
    Iterator

  83. def span(p: ((Key, Seq[Value])) ⇒ Boolean): (Iterator[(Key, Seq[Value])], Iterator[(Key, Seq[Value])])

    Definition Classes
    Iterator

  84. def sum[B >: (Key, Seq[Value])](implicit num: Numeric[B]): B

    Definition Classes
    TraversableOnce → GenTraversableOnce

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

    Definition Classes
    AnyRef

  86. def take(n: Int): Iterator[(Key, Seq[Value])]

    Definition Classes
    Iterator

  87. def takeWhile(p: ((Key, Seq[Value])) ⇒ Boolean): Iterator[(Key, Seq[Value])]

    Definition Classes
    Iterator

  88. def to[Col[_]](implicit cbf: CanBuildFrom[Nothing, (Key, Seq[Value]), Col[(Key, Seq[Value])]]): Col[(Key, Seq[Value])]

    Definition Classes
    TraversableOnce → GenTraversableOnce

  89. def toArray[B >: (Key, Seq[Value])](implicit arg0: ClassTag[B]): Array[B]

    Definition Classes
    TraversableOnce → GenTraversableOnce

  90. def toBuffer[B >: (Key, Seq[Value])]: Buffer[B]

    Definition Classes
    TraversableOnce → GenTraversableOnce

  91. def toIndexedSeq: IndexedSeq[(Key, Seq[Value])]

    Definition Classes
    TraversableOnce → GenTraversableOnce

  92. def toIterable: Iterable[(Key, Seq[Value])]

    Definition Classes
    TraversableOnce → GenTraversableOnce

  93. def toIterator: Iterator[(Key, Seq[Value])]

    Definition Classes
    Iterator → GenTraversableOnce

  94. def toList: List[(Key, Seq[Value])]

    Definition Classes
    TraversableOnce → GenTraversableOnce

  95. def toMap[T, U](implicit ev: <:<[(Key, Seq[Value]), (T, U)]): Map[T, U]

    Definition Classes
    TraversableOnce → GenTraversableOnce

  96. def toSeq: Seq[(Key, Seq[Value])]

    Definition Classes
    TraversableOnce → GenTraversableOnce

  97. def toSet[B >: (Key, Seq[Value])]: Set[B]

    Definition Classes
    TraversableOnce → GenTraversableOnce

  98. def toStream: Stream[(Key, Seq[Value])]

    Definition Classes
    Iterator → GenTraversableOnce

  99. def toString(): String

    Definition Classes
    Iterator → AnyRef → Any

  100. def toTraversable: Traversable[(Key, Seq[Value])]

    Definition Classes
    Iterator → TraversableOnce → GenTraversableOnce

  101. def toVector: Vector[(Key, Seq[Value])]

    Definition Classes
    TraversableOnce → GenTraversableOnce

  102. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  105. def withFilter(p: ((Key, Seq[Value])) ⇒ Boolean): Iterator[(Key, Seq[Value])]

    Definition Classes
    Iterator

  106. def zip[B](that: Iterator[B]): Iterator[((Key, Seq[Value]), B)]

    Definition Classes
    Iterator

  107. def zipAll[B, A1 >: (Key, Seq[Value]), B1 >: B](that: Iterator[B], thisElem: A1, thatElem: B1): Iterator[(A1, B1)]

    Definition Classes
    Iterator

  108. def zipWithIndex: Iterator[((Key, Seq[Value]), Int)]

    Definition Classes
    Iterator

Deprecated Value Members

  1. def /:\[A1 >: (Key, Seq[Value])](z: A1)(op: (A1, A1) ⇒ A1): A1

    Definition Classes
    GenTraversableOnce
    Annotations
    @deprecated
    Deprecated

    (Since version 2.10.0) use fold instead

Inherited from Iterator[(Key, Seq[Value])]

Inherited from TraversableOnce[(Key, Seq[Value])]

Inherited from GenTraversableOnce[(Key, Seq[Value])]

Inherited from AnyRef

Inherited from Any

Ungrouped