ariba.util.core
Class Function<K>

java.lang.Object
  ariba.util.core.Function<K>

public abstract class Function<K>
extends Object

Generic class that represents a function returning a type K.

Constructor Summary

Function()

Method Summary

abstract K	evaluate(Object... arguments) Evaluates the supplied arguments returning an instance of type K.
boolean	hasSameValue(Collection elements) Returns true if each of the elements in elements has the same value according to this function.
<V> Map<K,List<V>>	split(Collection<V> collection) Efficiently, splits the supplied collection of a value type V returning a map which is a partition of the collection using this function.
<V> void	splitInto(Collection<V> collection, Map<K,List<V>> result) Efficiently, splits the supplied collection of a value type V returning a map which is a partition of the collection using this function.
<V> void	splitInto(Collection<V> collection, Map<K,List<V>> result, boolean includeNulls) Efficiently, splits the supplied collection of a value type V returning a map which is a partition of the collection using this function.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Function

public Function()

Method Detail

evaluate

public abstract K evaluate(Object... arguments)

Evaluates the supplied arguments returning an instance of type K.

Parameters:

arguments - the arguments to be evaulated

Returns:

the instance of K

hasSameValue

public boolean hasSameValue(Collection elements)

Returns true if each of the elements in elements has the same value according to this function.

splitInto

public <V> void splitInto(Collection<V> collection,
                          Map<K,List<V>> result,
                          boolean includeNulls)

Efficiently, splits the supplied collection of a value type V returning a map which is a partition of the collection using this function.

Specifically, this method splits collection into sub-lists each of which has the same value when evaluated by this function.

splitInto

public <V> void splitInto(Collection<V> collection,
                          Map<K,List<V>> result)

Efficiently, splits the supplied collection of a value type V returning a map which is a partition of the collection using this function.

Specifically, this method splits collection into sub-lists each of which has the same value when evaluated by this function.

split

public <V> Map<K,List<V>> split(Collection<V> collection)

Efficiently, splits the supplied collection of a value type V returning a map which is a partition of the collection using this function.

Specifically, this method splits collection into sub-lists each of which has the same value when evaluated by this function.