PL/Java is a free add-on module that brings Java™ Stored Procedures, Triggers, Functions, Aggregates, Operators, Types, etc., to the PostgreSQL™ backend.
PostgreSQL's TRANSFORM FOR TYPE mechanism is only meaningful for a PL whose handler function itself does the work of looking up and applying the transforms.
It follows that a PL that doesn't apply transforms ought to say so when validating a function declaration that includes a TRANSFORM clause.
It would arguably be better to say so even earlier, at an attempted CREATE TRANSFORM that names the PL, but there is not currently a validator function applied at that time.
jcflack
commented
1 year ago
PostgreSQL's
TRANSFORM FOR TYPEmechanism is only meaningful for a PL whose handler function itself does the work of looking up and applying the transforms.https://www.postgresql.org/message-id/61FDBCFE.3090800%40anastigmatix.net
It follows that a PL that doesn't apply transforms ought to say so when validating a function declaration that includes a
TRANSFORMclause.It would arguably be better to say so even earlier, at an attempted
CREATE TRANSFORMthat names the PL, but there is not currently a validator function applied at that time.