Question

I use 2 sqlite db files.

1) fill items from A sqlite db.

@property (nonatomic, strong) NSMutableArray *items;  

…….

FMResultSet *results = [db1 executeQuery:query];

    while ([results next]) {

        Book *book = [[Book alloc] init];

        book.content = [results stringForColumn:@"Zcontent"];
        book.title   = [results stringForColumn:@"Ztitle"];
        book.idx     = [results intForColumn:@"Zidx"];

        book.highlight_YN  = NO;

        [items addObject:book];
        [book release];
    }

2) After then, select items from other -B- sqlite db.

FMDatabase *userDB = [FMDatabase databaseWithPath:userfmdbPath];  
NSString *query2 = [NSString stringWithFormat:@"SELECT zidx, highlight_YN FROM zHighlight where zbook = %d and zchapter = %d order by zidx ", pBook,pChapter];

FMResultSet *userresults = [userDB executeQuery:query2]; 

3) Question : I want to modify property(highlight_YN) of items with results of userresults compared with results – zidx .

How can I modify NSMutableArray property?

Answer 1

You can loop through the items array and search for the object.

    for ( Book *book in items ) {
        if( book.idx == [userresults intForColumn:@"zidx"] )
        {
            book.highlight_YN = [userresults boolForColumn:@"highlight_YN"];
            break;
        }
    }