er.extensions.foundation
Class ERXArrayUtilities.UniqueOperator

java.lang.Object
  er.extensions.foundation.ERXArrayUtilities.UniqueOperator

All Implemented Interfaces:

NSArray.Operator

Enclosing class:

ERXArrayUtilities

public static class ERXArrayUtilities.UniqueOperator
extends Object

Define an NSArray.Operator for the key unique.

This allows for key value paths like:

myArray.valueForKeyPath("@unique.someOtherPath");

Which in this case would return only those objects which are unique in myArray.

Constructor Summary

ERXArrayUtilities.UniqueOperator()
public empty constructor

Method Summary

Object	compute(NSArray array, String keypath) Removes duplicates.
NSArray	contents(NSArray array, String keypath)

Methods inherited from class java.lang.Object

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

Constructor Detail

ERXArrayUtilities.UniqueOperator

public ERXArrayUtilities.UniqueOperator()

public empty constructor

Method Detail

compute

public Object compute(NSArray array,
                      String keypath)

Removes duplicates.

Parameters:

array - array to be filtered.

keypath - name of fetch specification.

Returns:

immutable filtered array.

contents

public NSArray contents(NSArray array,
                        String keypath)