NSString * whereClause = @"ATTR1=:ATTR1 AND ATTR2=:ATTR2 AND ATTR3=:ATTR3";
 NSArray * primaryTokens = [whereClause componentsSeparatedByString: @":"];
 NSUInteger  primaryTokenCount = [primaryTokens count];
 NSMutableString * finalWhereClause = [[NSMutableString alloc] initWithString:primaryTokens[0]];
 NSMutableArray * attributes = [[NSMutableArray alloc]init];
 if(primaryTokenCount >1)
 {
    for(int i=0;i<(primaryTokenCount-1);i++){
        NSArray * secondaryTokens = [primaryTokens[i+1] componentsSeparatedByString: @" "];
        NSUInteger secondaryTokenCount = [secondaryTokens count];
        if(secondaryTokenCount > 1)
        {
            [finalWhereClause appendString:@"%@"];
            NSArray * newSecondaryArray = [secondaryTokens subarrayWithRange:NSMakeRange(1,[secondaryTokens count]-1)];
            [finalWhereClause appendString:@" "];
            [finalWhereClause appendString:[newSecondaryArray componentsJoinedByString:@" "]];
        }
    [attributes addObject:secondaryTokens[0]];
    }
[finalWhereClause appendString:@"%@"];
}
NSLog(@"THE FINAL PARSED STRING IS : %@",finalWhereClause);
NSLog(@"THE FINAL ATTRIBUTES IS : %@",[attributes componentsJoinedByString:@","]);