Compute per-row editability and deletability from a table's row-level
security policies and return them as synthetic columns so clients can
hide edit/delete affordances for rows the user cannot change.
- Introspect pg_policies and relrowsecurity at schema-cache load and
combine the UPDATE/DELETE USING qualifiers per table (permissive OR,
restrictive AND).
- Store the combined qualifiers on Table and inject can_edit/can_delete
as computed select fields when expanding `select *`, only for
RLS-enabled tables with a matching policy (COALESCE'd to a boolean).
- Keep the computed columns out of the OpenAPI spec so they are not
rendered as regular fields.
- Add a cfExpression field to CoercibleField to carry raw SQL
expressions through the planner to SqlFragment.
This gives the import statements more space, essentially, it collectively
removes 90+ unneeded lines in the imports statements.
Signed-off-by: Taimoor Zaeem <taimoorzaeem@gmail.com>
src/ now contains all source code - in subdirectories, according to the
.cabal component they belong to. This will allow us to put vendored
libraries in the same place - and later split our own code into multiple
components/libraries as well.