npryce/maybe-java

Hibernate user type for storing Maybe<T> values

npryce opened this issue · 2 comments

npryce commented

unknown -> null
known -> actual value

nespera commented

The user type needs to return the JDBC types used to map the given class to the database. But due to type erasure when Hibernate is presented with a Maybe<String> it will appear at runtime to be just a Maybe. So this looks to me to be a much harder problem than just writing a User Type.

npryce commented

You'll need to configure the wrapped type in the mapping for the property. I've done it for other types. It's a minor pain but does work.

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