Question

I’m dealing here with a new problem.
I started with the following code:

-(IBAction) Login:(id) sender{

    const char *dbpath = [databasePath UTF8String];
    sqlite3_stmt *statement;

    if (sqlite3_open(dbpath, &contactDB) == SQLITE_OK)
    {
        NSString *querySQL = [NSString stringWithFormat: @"SELECT * FROM Contacts WHERE Login= (\"%@\") AND Password = (\"%@\")", Login.text, Password.text];

        const char *query_stmt = [querySQL UTF8String];

        if (sqlite3_prepare_v2(contactDB, query_stmt, -1, &statement, NULL) == SQLITE_OK)
        {
            if (sqlite3_step(statement) == SQLITE_ROW)
            {
                //Store '1' when a user wants to stay logged 
                **if(logSwitch.on){
                    [self aStayLogged];
                }else{
                    [self aReleaseLogged];
                }**
                Model *model = [Model sharedModel];
                model.paramLogged = Login.text;
                //[self openSecondView:nil];

            } else {
                Status.text = @"Login failed: Please check your ID and Password";
            }

            sqlite3_finalize(statement);
        }
        sqlite3_close(contactDB);
    }
}

-(void) aStayLogged {

    sqlite3_stmt *statement;

    const char *dbpath = [databasePath UTF8String];

    if (sqlite3_open(dbpath, &contactDB) == SQLITE_OK)
    {
            NSString *updateSQL = [NSString stringWithFormat: @"UPDATE CONTACTS SET LOGGED = '1' WHERE LOGIN = (\"%@\")", Login.text];     
            const char *update_stmt = [updateSQL UTF8String];      
            sqlite3_prepare_v2(contactDB, update_stmt, -1, &statement, NULL);

        int success = sqlite3_step(statement);
            if (success == SQLITE_ERROR) {
                //NSAssert1(0, @"Error: failed to insert into the database with message '%s'.", sqlite3_errmsg(contactDB));
                Status.text = @"Update failed";
            }else{
                **Status.text = @"Stay OK";**
            }
        //sqlite3_bind_text(statement, 1, [coffeeName UTF8String], -1, SQLITE_TRANSIENT);
        //sqlite3_bind_int(statement, 2, coffeeID);

        sqlite3_finalize(statement);
    }
    sqlite3_close(contactDB);
}

Here’s the deal: If I link the method ‘aStayLogged’ as an IBAction to a button, the update is done correctly. But when I embed this method into the ‘Login’ method, nothing happens!

I check this with the method:

-(IBAction) Check{

    sqlite3_stmt *statement;

    const char *dbpath = [databasePath UTF8String];

    if (sqlite3_open(dbpath, &contactDB) == SQLITE_OK)
    {
        NSString *querySQL = [NSString stringWithFormat: @"SELECT LOGIN FROM CONTACTS WHERE LOGGED = '1'"]; 
        const char *query_stmt = [querySQL UTF8String];

        sqlite3_prepare_v2(contactDB, query_stmt, -1, &statement, NULL);

        if (sqlite3_step(statement) == SQLITE_ROW) {

            NSString *loggedField = [[NSString alloc] initWithUTF8String:(const char *) sqlite3_column_text(statement, 0)];

            Status.text = loggedField;

            [loggedField release];

        }else{

            Status.text = @"Update failed";

        }

        sqlite3_finalize(statement);
    }
    sqlite3_close(contactDB);    

}

The funny thing is that the status changes into “Stay OK” which is a confirmation that it should have worked! Does anyone have an idea what could be the cause of this? Sorry for the long post – I also happen to ask stupid questions, but this time I really don’t see it…

Answer 1

Hm, I think what you used wrong to check with SQLITE_ERROR, because there are many other status code which mate not complete, you better to check on SQLITE_OK or SQLITE_ROW, and if you got this status code, than you’re done well.

If you got an error, than use sqlite3_errmsg to find out what went wrong. I think there is something with SQLITE_BUSY perhaps or LOCK