iBatis 3.0-Beta-9
Is there a default @Case in @TypeDiscriminator?
I need this* for the following reasons:
1) Remove the need to update the annotation when a new discriminator value,
that would use the default type, is added to the database.
2) Remove the need to alter the SQL so a NULL discriminator value is not
returned.
3) Use an Interface in the type definition of the returned objects. Although I
currently use an Interface in the definition, I am forced to include a @Case
for all possible values.
Below is an example of my existing code:
> @TypeDiscriminator(javaType = String.class, cases = {
> @Case(type = AccountSummaryDefaultImpl.class, value =
> ""),
> @Case(type = AccountSummaryAImpl.class, value = "A"),
> @Case(type = AccountSummaryDefaultImpl.class, value =
> "B"),
> @Case(type = AccountSummaryDefaultImpl.class, value =
> "C"),
> @Case(type = AccountSummaryDefaultImpl.class, value =
> "D") }, column = "accountType")
> List<AccountSummaryInterface> selectAccountSummaries( Map<String, Object>
> queryParameters); }
>
Desired code utilizing a default type, as define by the attribute defaultType.
>
> @TypeDiscriminator(javaType = String.class, cases = {
> @Case(type = AccountSummaryAImpl.class, value = "A"),
> @Case(defaultType = AccountSummaryDefaultImpl.class) },
> column = "accountType")
> List<AccountSummaryInterface> selectAccountSummaries( Map<String, Object>
> queryParameters); }
* I am open to other solutions.
Paul Spencer
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