er.extensions.foundation
Class ERXArrayUtilities.IsEmptyOperator

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

All Implemented Interfaces:

NSArray.Operator

Enclosing class:

ERXArrayUtilities

public static class ERXArrayUtilities.IsEmptyOperator
extends Object
implements NSArray.Operator

Define an NSArray.Operator for the key isEmpty.

This allows for key value paths like:

myArray.valueForKey("@isEmpty");

Constructor Summary

ERXArrayUtilities.IsEmptyOperator()
public empty constructor

Method Summary

Object

compute(NSArray array, String keypath) returns true if the given array is empty, usefull for WOHyperlink disabled binding.

Methods inherited from class java.lang.Object

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

Constructor Detail

ERXArrayUtilities.IsEmptyOperator

public ERXArrayUtilities.IsEmptyOperator()

public empty constructor

Method Detail

compute

public Object compute(NSArray array,
                      String keypath)

returns true if the given array is empty, usefull for WOHyperlink disabled binding.

Specified by:

compute in interface NSArray.Operator

Parameters:

array - array to be checked.

keypath - name of fetch specification.

Returns:

Boolean.TRUE if array is empty, Boolean.FALSE otherwise.