In Objective-C Determine if a Property is an int, float, double, NSString, NSDate, NSNumber, etc

I need to determine an object's property (passed by name) type in order to perform deserialization from XML. I have some general pseudo-code (however I am unsure of how to perform these comparisons in Objective-C):

id object = [[[Record alloc] init] autorelease];

NSString *element = @"date";
NSString *data = @"2010-10-16";

objc_property_t property = class_getProperty([object class], [element UTF8String]);
const char *attributes = property_getAttributes(property);

char buffer[strlen(attributes) + 1];
strcpy(buffer, attributes);

char *attribute = strtok(buffer, ",");
if (*attribute == 'T') attribute++; else attribute = NULL;

if (attribute == NULL);
else if (strcmp(attribute, "@\"NSDate\"") == 0) [object setValue:[NSDate convertToDate:self.value] forKey:element];
else if (strcmp(attribute, "@\"NSString\"") == 0) [object setValue:[NSString convertToString:self.value] forKey:element];
else if (strcmp(attribute, "@\"NSNumber\"") == 0) [object setValue:[NSNumber convertToNumber:self.value] forKey:element];

I have looked through the class_getProperty and property_getAttributes, however I am still not sure how to do the above comparisons.