jsr166y.forkjoin
Class ParallelLongArray.WithMapping<U>

java.lang.Object
  extended by jsr166y.forkjoin.ParallelLongArray.WithMapping<U>
Enclosing class:
ParallelLongArray

public abstract static class ParallelLongArray.WithMapping<U>
extends java.lang.Object

A modifier for parallel array operations to apply to mappings of elements, not to the elements themselves


Method Summary
abstract  ParallelArray<U> all()
          Returns a new ParallelArray holding mapped elements
abstract  ParallelArray<U> all(java.lang.Class<? super U> elementType)
          Returns a new ParallelArray with the given element type holding all elements
abstract  U any()
          Returns mapping of some element matching bound and filter constraints, or null if none.
abstract  int anyIndex()
          Returns the index of some element matching bound and filter constraints, or -1 if none.
 void apply(Ops.Procedure<? super U> procedure)
          Applies the given procedure to mapped elements
 U max()
          Returns the maximum mapped element, or null if empty assuming that all elements are Comparables
 U max(java.util.Comparator<? super U> comparator)
          Returns the maximum mapped element, or null if empty
 U min()
          Returns the minimum mapped element, or null if empty, assuming that all elements are Comparables
 U min(java.util.Comparator<? super U> comparator)
          Returns the minimum mapped element, or null if empty
 U reduce(Ops.Reducer<U> reducer, U base)
          Returns reduction of mapped elements
abstract  int size()
          Return the number of elements selected using bound or filter restrictions.
 ParallelArray.SummaryStatistics<U> summary()
          Returns summary statistics, assuming that all elements are Comparables
 ParallelArray.SummaryStatistics<U> summary(java.util.Comparator<? super U> comparator)
          Returns summary statistics, using the given comparator to locate minimum and maximum elements.
abstract
<V> ParallelLongArray.WithMapping<V>
withMapping(Ops.Mapper<? super U,? extends V> mapper)
          Returns an operation prefix that causes a method to operate on mapped elements of the array using the given mapper applied to current mapper's results
abstract  ParallelLongArray.WithDoubleMapping withMapping(Ops.MapperToDouble<? super U> mapper)
          Returns an operation prefix that causes a method to operate on mapped elements of the array using the given mapper applied to current mapper's results
abstract  ParallelLongArray.WithLongMapping withMapping(Ops.MapperToLong<? super U> mapper)
          Returns an operation prefix that causes a method to operate on mapped elements of the array using the given mapper applied to current mapper's results
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Method Detail

apply

public void apply(Ops.Procedure<? super U> procedure)
Applies the given procedure to mapped elements

Parameters:
procedure - the procedure

reduce

public U reduce(Ops.Reducer<U> reducer,
                U base)
Returns reduction of mapped elements

Parameters:
reducer - the reducer
base - the result for an empty array
Returns:
reduction

anyIndex

public abstract int anyIndex()
Returns the index of some element matching bound and filter constraints, or -1 if none.

Returns:
index of matching element, or -1 if none.

any

public abstract U any()
Returns mapping of some element matching bound and filter constraints, or null if none.

Returns:
mapping of matching element, or null if none.

min

public U min(java.util.Comparator<? super U> comparator)
Returns the minimum mapped element, or null if empty

Parameters:
comparator - the comparator
Returns:
minimum mapped element, or null if empty

min

public U min()
Returns the minimum mapped element, or null if empty, assuming that all elements are Comparables

Returns:
minimum mapped element, or null if empty
Throws:
java.lang.ClassCastException - if any element is not Comparable.

max

public U max(java.util.Comparator<? super U> comparator)
Returns the maximum mapped element, or null if empty

Parameters:
comparator - the comparator
Returns:
maximum mapped element, or null if empty

max

public U max()
Returns the maximum mapped element, or null if empty assuming that all elements are Comparables

Returns:
maximum mapped element, or null if empty
Throws:
java.lang.ClassCastException - if any element is not Comparable.

summary

public ParallelArray.SummaryStatistics<U> summary(java.util.Comparator<? super U> comparator)
Returns summary statistics, using the given comparator to locate minimum and maximum elements.

Parameters:
comparator - the comparator to use for locating minimum and maximum elements
Returns:
the summary.

summary

public ParallelArray.SummaryStatistics<U> summary()
Returns summary statistics, assuming that all elements are Comparables

Returns:
the summary.

all

public abstract ParallelArray<U> all()
Returns a new ParallelArray holding mapped elements

Returns:
a new ParallelArray holding mapped elements

all

public abstract ParallelArray<U> all(java.lang.Class<? super U> elementType)
Returns a new ParallelArray with the given element type holding all elements

Parameters:
elementType - the type of the elements
Returns:
a new ParallelArray holding all elements

size

public abstract int size()
Return the number of elements selected using bound or filter restrictions. Note that this method must evaluate all selectors to return its result.

Returns:
the number of elements

withMapping

public abstract <V> ParallelLongArray.WithMapping<V> withMapping(Ops.Mapper<? super U,? extends V> mapper)
Returns an operation prefix that causes a method to operate on mapped elements of the array using the given mapper applied to current mapper's results

Parameters:
mapper - the mapper
Returns:
operation prefix

withMapping

public abstract ParallelLongArray.WithLongMapping withMapping(Ops.MapperToLong<? super U> mapper)
Returns an operation prefix that causes a method to operate on mapped elements of the array using the given mapper applied to current mapper's results

Parameters:
mapper - the mapper
Returns:
operation prefix

withMapping

public abstract ParallelLongArray.WithDoubleMapping withMapping(Ops.MapperToDouble<? super U> mapper)
Returns an operation prefix that causes a method to operate on mapped elements of the array using the given mapper applied to current mapper's results

Parameters:
mapper - the mapper
Returns:
operation prefix