@Override
public boolean evaluateWithObject(Object object) {
Object destinationValue =
NSKeyValueCodingAdditions.Utility.valueForKeyPath(object, relationshipName);
if (destinationValue != null) {
if (destinationValue instanceof NSArray) {
NSArray arr = (NSArray) destinationValue;
return EOQualifier.filteredArrayWithQualifier(arr, qualifier).count() > 0;
}
return qualifier.evaluateWithObject(destinationValue);
}
return false;
}
/**
* Like EOQualifier.filteredArrayWithQualifier but for an NSSet.
*
* @param <T> type of set contents
* @param set the set to filter
* @param qualifier the qualifier to apply
* @return the filtered set
*/
public static <T> NSSet<T> filteredSetWithQualifier(NSSet<T> set, EOQualifier qualifier) {
if (set == null) {
return NSSet.EmptySet;
}
if (qualifier == null || qualifier._isEmpty()) {
return set;
}
int count = set.count();
NSMutableSet<T> filteredSet = new NSMutableSet<>(count);
Enumeration setEnum = set.objectEnumerator();
while (setEnum.hasMoreElements()) {
Object object = setEnum.nextElement();
if (qualifier.evaluateWithObject(object)) {
filteredSet.addObject((T) object);
}
}
return filteredSet;
}