feat(spring-data): hierarchy operators (overlaps / ancestorOf / descendentOf)#249
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…ent MySQL LIKE escaping - Add a StatementInspector-backed integration test that runs the three-hop deep-nested-category-label policy (categories -> subCategories -> labels) and asserts the generated SQL has three nested correlated EXISTS subqueries and no cross join — a cartesian join would return rows but pair unrelated children. - README: document the MySQL/MariaDB LIKE backslash double-escaping gotcha and the NO_BACKSLASH_ESCAPES / OperatorFunction-override workarounds. Addresses the remaining #220 follow-ups (hierarchy operators handled in #249). Signed-off-by: Alex Olivier <alex@alexolivier.me>
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…escendentOf) Port the hierarchy operators from the Prisma adapter. A hierarchy(...) operand resolves to a constant delimited path, a whole-column field, or a list(...) of constant/field segments; the operators translate to: - ancestorOf(A, B): A is a strict prefix of B - descendentOf(A, B): B is a strict prefix of A - overlaps(A, B): one is a prefix of the other mapped onto cb.equal / path.in(strictPrefixes) / LIKE 'prefix%' (with the same literal escaping as the string operators), collapsing constant-only cases to an always-true/false predicate. Tests: 11 unit tests (all type combinations + error contracts) and 3 integration tests against a real Cerbos PDP exercising the hierarchy-overlaps/-ancestor-of/ -descendent-of policy actions. Adds a 'scope' column to the test ResourceEntity. 186 tests pass (incl. 98 integration tests against a real PDP). Signed-off-by: Alex Olivier <alex@alexolivier.me>
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Stacked on #220 (base:
spring-data). Adds the hierarchy operators that were listed as a follow-up in #220, bringing the Spring Data adapter to parity with the Prisma adapter.What
A Cerbos hierarchy is a delimited path (e.g.
a:b:c). Each side of a hierarchy operator is wrapped in ahierarchy(...)expression resolving to one of:list(...)of segments, each a constant or a field.ancestorOf(A, B)B LIKE 'A.%'; field→constant:A IN (strictPrefixes(B))descendentOf(A, B)ancestorOfwith operands swappedoverlaps(A, B)field IN (prefixes) OR field = raw OR field LIKE 'raw.%'Constant-only operands collapse to an always-true (
cb.conjunction()) or always-false (cb.disjunction()) predicate. LIKE prefixes reuse the same_/%/\escaping as the string operators. Mirrors the Prisma adapter's algorithm so behaviour is consistent across adapters.Tests
SpringDataQueryPlanAdapterTest.HierarchyOperators) covering every constant/field/segmented combination, the always-true/false collapses, strict-prefixIN, and the error contracts (non-hierarchy operands, two field-reference hierarchies, unsatisfiable constants).SpringDataIntegrationTest.HierarchyOperators) against a real Cerbos PDP exercising thehierarchy-overlaps/hierarchy-ancestor-of/hierarchy-descendent-ofpolicy actions in/policies/resource.yaml— this validates that the operator names,hierarchy(...)/list(...)shapes,R.id, and principal-attribute substitution all match what the planner emits.scopecolumn to the testResourceEntityfor the ancestor/descendent fixtures.186 tests pass (incl. 98 integration tests against a real PDP), verified locally via the gradle Docker image with Testcontainers.
Once #220 merges, this can be retargeted to
main.