At 05:07 PM 6/24/2002, you wrote:
>I think it is more likely that calling retrieveByPK returning 0 results
>is an error than doing so with a Map get method call. Where did the PK
>that returned 0 results come from? There is a pending patch to make the
>exception vs. null configurable with a propery. I'm not sure I want to
>go this way though. Can anyone provide me with some use cases that
>supports the use of null vs. throwing an exception. i.e. when is it not
>an exceptional condition?
Here's a simple code fragment that shows an obvious use case:
username = request.getParameter("username");
User u = UserPeer.retrieveByPK(username);
if (u == null) {
response.sendRedirect("noSuchUser.jsp");
} else {
request.getSession().setAttribute("loggedInUser", u);
}
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