public DAL()
{
if (this.adapter == null)
{
this.adapter = new AdapterFactory().createAdapter(Properties.Settings.Default.db_type);
}
}
public DAL(string db, string Host, string Username, string Password, int port, string Catalog)
{
if (this.adapter!=null && this.adapter.Db == db && this.adapter.Host == Host && this.adapter.Catalog == Catalog)
{
return;
}
this.adapter = new AdapterFactory().createAdapter(db, Host, Username, Password, port, Catalog);
}
public DAL(string db)
{
if (this.adapter!=null && this.adapter.Db == db)
return;
this.adapter = new AdapterFactory().createAdapter(db);
}
