Question

I have two classes A and B using SQLite database.Class A is using TableA and classB is using tableB. I’m able to insert data in class A but not in class B. However, select query is working properly in class B. I have used same function of insert as in Class A. I have gone through my code several times still not able to figure this out.

Code where I’m inserting data into database.
[app.sk insertDictionary:dictFrndDetail forTable:@”tblAllProfiles”];

Function i’m using for insertion:

- (void)insertDictionary:(NSDictionary *)dbData forTable:(NSString *)table {

    NSMutableString *sql = [NSMutableString stringWithCapacity:16];
    [sql appendFormat:@"INSERT INTO %@ (",table];

    NSArray *dataKeys = [dbData allKeys];
    for (int i = 0 ; i < [dataKeys count] ; i++) {
        [sql appendFormat:@"%@",[dataKeys objectAtIndex:i]];
        if (i + 1 < [dbData count]) {
            [sql appendFormat:@", "];
        }
    }

    [sql appendFormat:@") VALUES("];
    for (int i = 0 ; i < [dataKeys count] ; i++) {
        if ([[dbData objectForKey:[dataKeys objectAtIndex:i]] intValue]) {
            [sql appendFormat:@"%@",[dbData objectForKey:[dataKeys objectAtIndex:i]]];
        } else {
            [sql appendFormat:@"'%@'",[dbData objectForKey:[dataKeys objectAtIndex:i]]];
        }
        if (i + 1 < [dbData count]) {
            [sql appendFormat:@", "];
        }
    }

    [sql appendFormat:@")"];
    [self runDynamicSQL:sql forTable:table];
}

Code for runDynamicSQL:

- (BOOL)runDynamicSQL:(NSString *)sql forTable:(NSString *)table {

    int result;
    NSAssert1(self.dynamic == 1,[NSString stringWithString:@"Tried to use a dynamic function on a static database"],NULL);
    sqlite3_stmt *statement;
    if (statement = [self prepare:sql]) {
        result = sqlite3_step(statement);
    }       
    sqlite3_finalize(statement);
    if (result) {
        if (self.delegate != NULL && [self.delegate respondsToSelector:@selector(databaseTableWasUpdated:)]) {
            [delegate databaseTableWasUpdated:table];
        }   
        return YES;
    } else {
        return NO;
    }

}

But This same code is working in one class but not in this class. How to figure out the error?

Answer 1

Use FMDB for your SQLITE purpose it easier to manage and easier to implement then sqlite. Search on google for FMDB tutorials you will find it a lot easier than your current implementation.