Predicate help needed

FROM : Brad Bumgarner
DATE : Fri Jul 14 22:17:57 2006

Overview of project:
   I am working on an app. that will allow for output to a printer (for 
faxing) or email message a proof confirmation for a client requesting 
work from the company I work for. Information input is the contact 
person's name, their company name, phone, fax, email, as well as the 
info. required for the requested job.

I would like to be able to enter the contact name in NSTokenField and 
query the Address Book as the entry is being made (al a Mail.app). I 
would like the organization name and phone, fax and email fields to 
display the information for the current token.


Current status (I'm still learning Obj-C):
   I have an NSTextfield that I currently enter the text for the 
contact name. As the text is entered, the text is broken into 
component parts, into an NSArray, using a space as the separator. The 
Address Book is then queried for entries matching first name and last 
name. (I want to be able to enter either name first so each component 
is queried for both first and last names). These results are stored 
in an NSMutableSet, thus eliminating duplicates. The results are 
currently displayed in the run log (since I am still in the early 
building/testing phase).

Now I need to filter this set to remove objects that don't contain 
both (first name AND last name) OR (last name AND first name). It 
seems that I should be using a predicate here but I don't understand 
how to create and use them. I have read the documentation but quickly 
get lost.

Here are the "players" involved in my project that I believe I need 
to do the filtering:

NSArray *searchComponents;
This holds the string components (i.e.: "Brad Bumg" --> (@"Brad", 
@"Bumg")) the components could be in first name first order OR last 
name first order.


NSMutableSet *searchElements; // ABPerson objects matching at least 
one of the searchComponents entries


Would someone help me with the filtering process?

Thanks,
Brad Bumgarner, CTA