iOS: Full name search using predicate

iOS: Full name search using predicate

-(NSArray*) dataSourceForSearchString:(NSString*) searchedText
{
    NSString *strTrimmedSearchText = [searchedText stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
    NSArray *array = [strTrimmedSearchText componentsSeparatedByString:@" "];

    NSPredicate *predicate = nil;
    
    /*
     
    @property (nonatomic, strong) NSString *firstName;
     @property (nonatomic, strong) NSString *midName;
    @property (nonatomic, strong) NSString *lastName;
    
     */
    
    if(array.count == 1)
    {
       predicate = [NSPredicate predicateWithFormat:@"firstName CONTAINS[c] %@ OR lastName CONTAINS[c] %@",
                    strTrimmedSearchText,
                    strTrimmedSearchText];
    }
    else if (array.count == 2)//search contains firstname and lastname
    {
        NSString *firstName  =  [array objectAtIndex:0];
        NSString *lastName  =   [array objectAtIndex:1];
        
        //firstName should exact match, lastname should begin with text
        predicate = [NSPredicate predicateWithFormat:@"(firstName LIKE[c] %@ AND lastName BEGINSWITH[c] %@)",
                     firstName,
                     lastName];
    }
    else if(array.count == 3)//search contains firstname, middlenamey and lastname
    {
        NSString *firstName     =  [array objectAtIndex:0];
        NSString *midName       =  [array objectAtIndex:1];
        NSString *lastName      =  [array objectAtIndex:2];
        
        //firstName and middle name should exact match, lastname should begin with text
        predicate = [NSPredicate predicateWithFormat:@"(firstName LIKE[c] %@ AND midName LIKE[c] %@ AND lastName BEGINSWITH[c] %@)",
                     firstName,
                     midName,
                     lastName];
    }
    else
    {
        return [NSArray new];
    }

    NSArray *filteredArray = [_arrayBeneficiarySummaryList filteredArrayUsingPredicate:predicate];
    
    return filteredArray;
}