From: Bill Seymour (bsey_at_[hidden])
Date: 2001-06-06 08:34:53
I've looked over the _Introduction to the Database Template
Library_ document, and I've reread about the first half more
carefully. The second half hasn't sunk in yet.
I have a few concerns:
- I would recommend not overloading the == operator to bind
database columns to structure members. In accordance with
the "principle of least surprise," overloaded operators
should do the same kind of thing that the corresponding
built-in operators do. I suggest a conventional member
function for doing the binding. The name "bind" comes
to mind. 8-)
- Without random-access iterators, it seems like there's
no way to mimic the functionality of scroll cursors.
They're part of standard SQL.
- What's the first DefaultInsValidate<>::operator() argument?
It's not referenced in the sample code. Could it have
something to do with validating a row based on values
in other rows? If so, I think that violates the relational
- In the IndexedViewExample() function, it looks like the
framework allows modifying keys. This seems dangerous.
- There are several places in the document where it's implied
that SGI documentation contains the authoritative description
of the part of the C++ standard library commonly called the
STL. I don't mean to cast any aspersions on CGI; but isn't
the ISO standard a better authority to cite?
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