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Migrate grails-data-neo4j to Groovy 4/Jakarta/GORM 8 baseline#15816

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Migrate grails-data-neo4j to Groovy 4/Jakarta/GORM 8 baseline#15816
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@borinquenkid borinquenkid commented Jul 3, 2026

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📖 Neo4j GormRegistry migration — reading order: 1 of 5:

  1. Migrate grails-data-neo4j to Groovy 4/Jakarta/GORM 8 baseline #15816 — PR1: Groovy4/Jakarta/GORM8 baseline migration (no GormRegistry coupling) — this PR
  2. feat(grails-data-neo4j): fold standalone build into root settings.gradle (PR2) #15951 — PR2: fold standalone build into root settings.gradle
  3. feat(grails-data-neo4j): wire Neo4j adapter to GormRegistry's GormApiFactory mechanism (PR3) #15817 — PR3: wire Neo4jGormApiFactory into GormRegistry
  4. Re-add Neo4j example apps and docs into monorepo (PR4) #15832 — PR4: re-add example apps and docs into monorepo
  5. chore(grails-data-neo4j): clean up Checkstyle/CodeNarc violations (PR5) #15833 — PR5: Checkstyle/CodeNarc cleanup

You are reading 1 of 5.

This Neo4j chain branches off the core GormRegistry O(M+N) scaling stack's head (#15779#15780#15790) — it depends on that stack but is its own separate sequence, not additional steps within it.

Summary

Baseline migration (PR1 of the Neo4j GormRegistry migration plan): bumps grails-data-neo4j's dependency stack to match root-repo (Groovy 4.0.32, Jakarta EE 10, GORM 8.0.0-SNAPSHOT, Spring Boot 4.1), with no GormRegistry behavioral change. The module previously didn't compile against these versions at all; it now compiles and its test suite runs (181/215 passing, 34 explicitly @PendingFeature with documented reasons, 0 unaccounted failures).

  • Build/dependency fixes: force Jetty to 9.4.43 and neo4j-java-driver to 4.4.13 on the test classpath (Spring Boot 4.1's BOM silently upgrades both to binary-incompatible major versions); add --add-opens for java.lang/sun.nio.ch (embedded Neo4j 3.5.x reflects into JDK internals); replace dead javax.el/el-impl with jakarta.el/expressly; add geantyref/byte-buddy (needed by Spock's Mock() at runtime, not declared by spock-core).
  • Two real, previously-latent bugs fixed in Neo4j's own source: GraphClassMapping#getMappedForm() infinite recursion under Groovy 4's changed property-resolution precedence; Neo4jQuery#applyOrderAndLimits() null-unsafe offset/max checks that crashed most unpaginated queries (this alone was blocking the majority of the suite). Also fixed GormStaticApi#saveAll()'s shared bug (returns null instead of persisted ids) via a Neo4j-side override, and added GraphGormMappingFactory#createDefaultIdentityMapping() so named/custom id generators (e.g. "snowflake") don't throw.
  • TCK migration: introduces GrailsDataNeo4jTckManager + Neo4jGormDatastoreSpec, migrating all 37 spec files off the old adapter-specific GormDatastoreSpec onto the shared grails-datamapping-tck framework, matching Hibernate5/7 and MongoDB's pattern.

The remaining 34 pending tests are annotated with the exact reason each is blocked - the majority (~19) on Neo4jGormApiFactory not yet being registered with GormRegistry (PR3 scope), plus a handful of narrower, individually-documented gaps not yet root-caused.

Test plan

  • ./gradlew publishToMavenLocal -PskipTests from repo root, then cd grails-data-neo4j && ./gradlew build - compiles clean
  • ./gradlew :grails-datastore-gorm-neo4j:test - BUILD SUCCESSFUL, 215 tests / 0 failures / 181 passing / 34 @PendingFeature

🤖 Generated with Claude Code

Copilot AI review requested due to automatic review settings July 3, 2026 03:09

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Pull request overview

Migrates the grails-data-neo4j sub-build onto the Grails 8 / GORM 8 / Groovy 4 / Jakarta EE 10 baseline so it compiles and (mostly) runs its test suite within the main grails-core repo, while also modernizing its TCK integration to match other datastore adapters.

Changes:

  • Update grails-data-neo4j build and dependency stack for Groovy 4 / Spring 7 / Spring Boot 4.1 / Jakarta, including test-runtime dependency alignment for embedded Neo4j harness compatibility.
  • Migrate Neo4j adapter tests onto grails-datamapping-tck via a new Neo4j-specific TCK manager + base spec, replacing the old adapter-local GormDatastoreSpec.
  • Fix a couple of Neo4j adapter correctness issues surfaced by the newer baseline (e.g., GraphClassMapping recursion and null-safe pagination handling).

Reviewed changes

Copilot reviewed 71 out of 71 changed files in this pull request and generated 3 comments.

Show a summary per file
File Description
grails-data-neo4j/grails-plugin/build.gradle Remove Java 11 compatibility settings from plugin build.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/resources/META-INF/services/org.apache.grails.data.testing.tck.base.GrailsDataTckManager Register Neo4j TCK manager via ServiceLoader for TCK specs.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/org/grails/datastore/gorm/neo4j/TransactionPropagationSpec.groovy Migrate spec to new Neo4j TCK base spec and manager-scoped session access.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/org/grails/datastore/gorm/neo4j/Neo4jSuite.groovy Remove legacy JUnit suite wrapper.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/org/grails/datastore/gorm/neo4j/ApiExtensionsSpec.groovy Migrate spec to new TCK base and annotate known PR2 gaps as PendingFeature.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/org/apache/grails/data/neo4j/core/Neo4jGormDatastoreSpec.groovy New Neo4j-specific base spec built on shared GrailsDataTckSpec.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/org/apache/grails/data/neo4j/core/GrailsDataNeo4jTckManager.groovy New Neo4j TCK manager to share embedded server per spec and wire datastore/session lifecycle.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/WithTransactionSpec.groovy Switch to Neo4j TCK base spec and TCK domain classes.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/ValidationSpec.groovy Switch to Neo4j TCK base spec and manager-backed mapping/session usage.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/UniqueConstraintSpec.groovy Jakarta migration (javax.persistencejakarta.persistence) and new base spec.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/TransientsSpec.groovy Switch to new base spec and manager-backed session operations.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/SchemalessSpec.groovy Switch to new base spec; mark known dynamic-association issue as PendingFeature.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/RelationshipUtilsSpec.groovy Switch to new base spec and shared TCK domains.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/RelationshipMappingSpec.groovy Switch to new base spec and manager-backed session/datastore references.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/ReadManyObjectsSpec.groovy Switch to new base spec and Jakarta persistence imports.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/ProxySpec.groovy Switch to new base spec and manager-backed session lifecycle.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/ProjectionsSpec.groovy Switch to new base spec and shared TCK domains.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/Pet.groovy Align test domain imports with shared TCK domains.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/PersistenceEventListenerSpec.groovy Switch to new base spec and manager-backed datastore wiring.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/path/RelationshipSpec.groovy Mark GormRegistry-dependent behavior as PendingFeature (PR2).
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/path/PathSpec.groovy Mark GormRegistry-dependent behavior as PendingFeature (PR2).
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/PagedResultSpec.groovy Switch to new base spec and shared TCK Person domain.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/OrphanDeleteSpec.groovy Switch to new base spec and manager-backed session clears.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/OptimisticLockingSpec.groovy Switch to new base spec and adjust session references/comments accordingly.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/OneToOneSpec.groovy Switch to new base spec and shared TCK domains for associations.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/OneToManyUpdateSpec.groovy Switch to new base spec; mark static-API-dependent cypher behavior as PendingFeature.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/NullValueEqualSpec.groovy Switch to new base spec and shared TCK TestEntity domain.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/Neo4jResultListSpec.groovy Switch to new base spec and manager-backed session clearing.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/NativeIdentityGeneratorSpec.groovy Switch to new base spec; mark saveAll/GormRegistry issue as PendingFeature.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/multitenancy/SingleTenancySpec.groovy Replace removed Spring SocketUtils usage with ServerSocket-based port selection.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/multitenancy/MultiTenancySpec.groovy Mark GormRegistry-dependent static API resolution as PendingFeature (PR2).
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/MultipleConnectionsSpec.groovy Replace removed Spring SocketUtils usage with ServerSocket-based port selection.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/MiscSpec.groovy Switch to new base spec and update session/datastore references to manager.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/MarkDirtyFalseSpec.groovy Switch to new base spec; mark known dirty-checking gap as PendingFeature.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/MapPropertySpec.groovy Switch to new base spec and domain registration pattern.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/ManyToManySpec.groovy Switch to new base spec and update manager-backed session usage.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/ManyToManyQuerySpec.groovy Switch to new base spec and domain registration pattern.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/LikeQuerySpec.groovy Switch to new base spec and update transaction/session usage.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/LabelStrategySpec.groovy Switch to new base spec and manager-backed serverControls/session usage.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/JoinCriteriaSpec.groovy Switch to new base spec and manager-backed session clearing.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/JavaxValidationSpec.groovy Switch to Jakarta validation annotations and new base spec.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/InheritanceProxySpec.groovy Switch to new base spec and shared TCK Child domain.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/GroovyProxySpec.groovy Switch to new base spec and manager-backed mappingContext proxyFactory changes.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/GormDatastoreSpec.groovy Remove adapter-local legacy base test spec implementation.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/FindByIsNullSpec.groovy Switch to new base spec and manager-backed session clearing.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/EagerFetchingSpec.groovy Switch to new base spec and manager-backed proxyFactory assertions.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/CypherQueryStringSpec.groovy Switch to new base spec and annotate PR2-dependent behaviors as PendingFeature.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/cypher/OneToManyCreateSpec.groovy Mark known failing case as PendingFeature with updated reason.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/CustomLabelWithDynamicAssociationSpec.groovy Switch to new base spec and manager-backed session clearing.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/test/groovy/grails/gorm/tests/CascadingDeleteSpec.groovy Switch to new base spec and shared TCK domains for Pet/PetType.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/main/groovy/org/grails/datastore/gorm/neo4j/services/implementers/UpdateCypherQueryImplementer.groovy Adjust implementer typing/compatibility for Groovy 4 baseline.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/main/groovy/org/grails/datastore/gorm/neo4j/services/implementers/StatementResultCypherQueryImplementer.groovy Adjust implementer typing/compatibility for Groovy 4 baseline.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/main/groovy/org/grails/datastore/gorm/neo4j/services/implementers/FindPathCypherQueryImplementer.groovy Adjust implementer typing/compatibility for Groovy 4 baseline.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/main/groovy/org/grails/datastore/gorm/neo4j/services/implementers/FindOneCypherQueryImplementer.groovy Adjust implementer typing/compatibility for Groovy 4 baseline.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/main/groovy/org/grails/datastore/gorm/neo4j/services/implementers/FindAllCypherQueryImplementer.groovy Adjust implementer typing/compatibility for Groovy 4 baseline.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/main/groovy/org/grails/datastore/gorm/neo4j/Neo4jSession.java Jakarta persistence migration + safer custom-type casting.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/main/groovy/org/grails/datastore/gorm/neo4j/Neo4jDatastoreTransactionManager.java Jakarta persistence migration for FlushModeType.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/main/groovy/org/grails/datastore/gorm/neo4j/Neo4jDatastore.java Jakarta migration (PreDestroy, FlushModeType).
grails-data-neo4j/grails-datastore-gorm-neo4j/src/main/groovy/org/grails/datastore/gorm/neo4j/GraphGormMappingFactory.groovy Add identity-mapping fallback for custom/named id generators.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/main/groovy/org/grails/datastore/gorm/neo4j/GraphClassMapping.groovy Fix Groovy 4 recursion by using explicit field access for mappedForm.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/main/groovy/org/grails/datastore/gorm/neo4j/engine/Neo4jQuery.groovy Jakarta migration + null-safe offset/max handling and type tweaks.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/main/groovy/org/grails/datastore/gorm/neo4j/engine/Neo4jEntityPersister.java Jakarta persistence migration (FetchType/LockModeType).
grails-data-neo4j/grails-datastore-gorm-neo4j/src/main/groovy/org/grails/datastore/gorm/neo4j/engine/Neo4jAssociationQueryExecutor.groovy Jakarta persistence migration (FetchType).
grails-data-neo4j/grails-datastore-gorm-neo4j/src/main/groovy/org/grails/datastore/gorm/neo4j/collection/Neo4jResultList.groovy Jakarta persistence migration (LockModeType).
grails-data-neo4j/grails-datastore-gorm-neo4j/src/main/groovy/org/grails/datastore/gorm/neo4j/collection/Neo4jPath.groovy Groovy 4 generic compatibility adjustments for iterator typing.
grails-data-neo4j/grails-datastore-gorm-neo4j/src/main/groovy/org/grails/datastore/gorm/neo4j/api/Neo4jGormStaticApi.groovy Override saveAll to return persisted ids; tighten some casts.
grails-data-neo4j/grails-datastore-gorm-neo4j/build.gradle Update test dependencies (TCK), force compatible Jetty/driver versions, add JVM opens, adjust test parallelism.
grails-data-neo4j/gradle.properties Bump versions to GORM 8 / Grails 8 / Groovy 4 / Spring 7 / Boot 4.1 baseline.
grails-data-neo4j/GORM_REGISTRY_MIGRATION.md Add documentation describing PR1/PR2 migration plan for GormRegistry wiring.
grails-data-neo4j/build.gradle Enable mavenLocal buildscript resolution; switch Groovy deps to org.apache.groovy; apply test-retry plugin; set Java 21 toolchain.
grails-data-neo4j/boot-plugin/build.gradle Switch Groovy exclusions/deps from org.codehaus.groovy to org.apache.groovy.

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 49.6213%. Comparing base (3914546) to head (c024658).

Additional details and impacted files

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@@                          Coverage Diff                           @@
##             feat/gorm-registry-core-impl     #15816        +/-   ##
======================================================================
- Coverage                         49.6432%   49.6213%   -0.0219%     
+ Complexity                          17043      17032        -11     
======================================================================
  Files                                1961       1961                
  Lines                               93737      93738         +1     
  Branches                            16466      16465         -1     
======================================================================
- Hits                                46534      46514        -20     
- Misses                              39960      39983        +23     
+ Partials                             7243       7241         -2     
Files with missing lines Coverage Δ
...org/grails/datastore/gorm/GormValidationApi.groovy 50.7463% <ø> (-0.7243%) ⬇️
.../data/testing/tck/tests/WithTransactionSpec.groovy 100.0000% <100.0000%> (ø)

... and 4 files with indirect coverage changes

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borinquenkid added a commit that referenced this pull request Jul 3, 2026
- GrailsDataNeo4jTckManager#destroy(): the per-test graph-wipe transaction
  and session were never explicitly closed (only relying on commit()/an
  outer finally on the session). Use withCloseable on both so the
  transaction and session are always released, including on failure paths.
- grails-data-neo4j/build.gradle: scope both buildscript- and root-level
  mavenLocal() to org.apache.grails* groups only, so it's only consulted
  for locally-published Grails/GORM snapshots and can't accidentally
  shadow other dependencies with unrelated locally-published artifacts.
- grails-datastore-gorm-neo4j/build.gradle: the Jetty version force is now
  scoped to testCompileClasspath/testRuntimeClasspath only, since main
  code never touches Jetty directly (it's only needed by the test-only
  embedded Neo4j harness). The neo4j-java-driver force stays applied to
  all configurations, since main code (Neo4jQuery#executeQuery) also
  depends on the pinned driver version.

Verified: BUILD SUCCESSFUL, 0 failures (181/215 passing, 34 pending -
unchanged from before these fixes).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
@borinquenkid borinquenkid force-pushed the feat/gorm-registry-core-impl branch from e4773df to 3914546 Compare July 4, 2026 22:25
borinquenkid added a commit that referenced this pull request Jul 4, 2026
- GrailsDataNeo4jTckManager#destroy(): the per-test graph-wipe transaction
  and session were never explicitly closed (only relying on commit()/an
  outer finally on the session). Use withCloseable on both so the
  transaction and session are always released, including on failure paths.
- grails-data-neo4j/build.gradle: scope both buildscript- and root-level
  mavenLocal() to org.apache.grails* groups only, so it's only consulted
  for locally-published Grails/GORM snapshots and can't accidentally
  shadow other dependencies with unrelated locally-published artifacts.
- grails-datastore-gorm-neo4j/build.gradle: the Jetty version force is now
  scoped to testCompileClasspath/testRuntimeClasspath only, since main
  code never touches Jetty directly (it's only needed by the test-only
  embedded Neo4j harness). The neo4j-java-driver force stays applied to
  all configurations, since main code (Neo4jQuery#executeQuery) also
  depends on the pinned driver version.

Verified: BUILD SUCCESSFUL, 0 failures (181/215 passing, 34 pending -
unchanged from before these fixes).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
@borinquenkid borinquenkid force-pushed the build/neo4j-groovy4-baseline branch from 85799cd to c56a14c Compare July 4, 2026 22:25
borinquenkid and others added 4 commits July 4, 2026 18:23
grails-data-neo4j is a separate Gradle build on an older baseline (Groovy 3.0.25 / Grails 6.0.0 /
javax) consuming published GORM. Document the two-PR path to wire it to the GormRegistry O(M+N) work:
PR1 migrates the build to the Groovy 4 / Java 21 / Jakarta baseline and onto core-impl's GORM
(8.0.0-SNAPSHOT); PR2 adds Neo4jGormApiFactory + registration and rewrites the entity traits from
GormEnhancer to GormRegistry. To be executed once #15780 CI confirms the GormRegistry SPI is stable.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Baseline migration (PR1 of the Neo4j GormRegistry migration plan): bumps
grails-data-neo4j's dependency stack to match root-repo (Groovy 4.0.32,
Jakarta EE 10, GORM 8.0.0-SNAPSHOT, Spring Boot 4.1), with no GormRegistry
behavioral change. The module previously didn't compile against these
versions at all; it now compiles and its test suite runs (181/215 passing,
34 explicitly @PendingFeature with documented reasons, 0 unaccounted
failures).

Build/dependency fixes:
- Force Jetty to 9.4.43 and neo4j-java-driver to 4.4.13 on the test
  classpath: Spring Boot 4.1's BOM silently upgrades both to
  binary-incompatible major versions, breaking the embedded test server
  and Driver#defaultTypeSystem().
- Add --add-opens for java.lang and sun.nio.ch: the embedded Neo4j 3.5.x
  kernel reflects into JDK internals that JDK 9+ blocks by default.
- Replace dead javax.el/el-impl with jakarta.el/expressly, and add
  geantyref and byte-buddy (both needed by Spock's Mock() at runtime but
  not declared as spock-core dependencies).

Two real, previously-latent bugs fixed in Neo4j's own source:
- GraphClassMapping#getMappedForm(): ambiguous Groovy property syntax now
  resolves to a method call under Groovy 4, causing infinite recursion
  with PersistentEntity's default interface method. Fixed with explicit
  field access.
- Neo4jQuery#applyOrderAndLimits(): checked offset != 0 / max != -1, but
  Query#offset/max are now boxed Integers defaulting to null (not 0/-1),
  so most unpaginated queries crashed binding a null SKIP parameter. This
  alone was blocking the majority of the test suite.
- GormStaticApi#saveAll()'s shared implementation returns session.flush()'s
  result (void) instead of the persisted ids; fixed via override in
  Neo4jGormStaticApi (dormant until PR2 registers the API factory, see
  below).
- GraphGormMappingFactory: added a createDefaultIdentityMapping() override
  so named/custom id generators (e.g. "snowflake") fall back to
  ValueGenerator.CUSTOM instead of throwing, mirroring Hibernate's existing
  handling of this same gap in the shared base class.

TCK migration: introduces GrailsDataNeo4jTckManager + Neo4jGormDatastoreSpec,
migrating all 37 spec files off the old adapter-specific GormDatastoreSpec
onto the shared grails-datamapping-tck framework, matching the pattern
already used by Hibernate5/7 and MongoDB. A single embedded server is
reused per spec class instead of restarted per test. Restores the old base
spec's per-spec getConfiguration() override point, which the initial
migration had dropped.

The remaining 34 pending tests are annotated with the exact reason each is
blocked: the majority (~19) on Neo4jGormApiFactory not yet being registered
with GormRegistry (PR2 scope - static/cypher-string API calls resolve to
the generic GormStaticApi instead of Neo4jGormStaticApi), plus a handful of
narrower, individually-documented gaps not yet root-caused.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
- GrailsDataNeo4jTckManager#destroy(): the per-test graph-wipe transaction
  and session were never explicitly closed (only relying on commit()/an
  outer finally on the session). Use withCloseable on both so the
  transaction and session are always released, including on failure paths.
- grails-data-neo4j/build.gradle: scope both buildscript- and root-level
  mavenLocal() to org.apache.grails* groups only, so it's only consulted
  for locally-published Grails/GORM snapshots and can't accidentally
  shadow other dependencies with unrelated locally-published artifacts.
- grails-datastore-gorm-neo4j/build.gradle: the Jetty version force is now
  scoped to testCompileClasspath/testRuntimeClasspath only, since main
  code never touches Jetty directly (it's only needed by the test-only
  embedded Neo4j harness). The neo4j-java-driver force stays applied to
  all configurations, since main code (Neo4jQuery#executeQuery) also
  depends on the pinned driver version.

Verified: BUILD SUCCESSFUL, 0 failures (181/215 passing, 34 pending -
unchanged from before these fixes).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Rebasing build/neo4j-groovy4-baseline onto current 8.0.x (which has moved
to Groovy 5.0.7) surfaced 18 failing tests beyond the baseline migration's
own known-pending set. Root-caused and fixed the following:

- Bump grails-data-neo4j's own groovyVersion/spockVersion to 5.0.7 /
  2.4-groovy-5.0 to match what the rest of 8.0.x now resolves; the module's
  properties were stale at 4.0.32, causing Spock to refuse to run entirely.
- Neo4jQuery: widen the to-one association id-collection condition so a
  mandatory (non-nullable), lazy to-one also has its real id collected,
  fixing <property>Id lookups that were silently returning the parent's id
  instead (OneToOneSpec); add IS NULL fallbacks for the NOT_EQUALS and
  EQUALS(null) comparison operators, matching GORM's non-SQL-null-semantics
  expectations for countByXNotEqual and findWhere/findAllWhere(prop: null).
- Neo4jGormStaticApi: add the missing narrowing cast the stricter Groovy 5
  compiler now requires for executeUpdate's long-to-Integer return.
- GormValidationApi (grails-datamapping-core): getValidator() permanently
  cached the first auto-discovered validator instead of re-resolving from
  the MappingContext on each call - harmless for adapters that build a
  fresh datastore per test, but silently ignored every later test's
  registered mock validator for adapters (Neo4j) that reuse one datastore
  across a whole spec class. Re-resolve on every call unless explicitly
  overridden via setValidator().
- WithTransactionSpec (grails-datamapping-tck): wrap the three
  withNewTransaction rollback scenarios in a fresh thread - Neo4j has no
  ambient-session nested-transaction support, so running on the same
  thread as the TCK harness's own per-test transaction silently bypassed
  the rollback under test; a fresh thread has no ambient session, matching
  the workaround the module's own legacy WithTransactionSpec already used.
- Two legacy grails.gorm.tests specs (OneToOneSpec, OneToManyUpdateSpec)
  had assertions written against the very bugs fixed above (asserting a
  DataIntegrityViolationException / a swapped id as "expected" behavior);
  updated both to assert the now-correct behavior.

Remaining known-accepted failures (pre-existing, not caused by this rebase):
OneToManySpec (a inverse-collection-timing fix attempt caused a worse
regression in AssignedIdSpec and was reverted), OptimisticLockingSpec and
FindWhereSpec (confirmed Neo4j-adapter-specific via H5/H7/Mongo all passing
the identical shared TCK tests), plus 3 tests that now pass under
@PendingFeatureIf but still report as such due to an unresolved Spock
condition-evaluation timing quirk.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
@borinquenkid borinquenkid force-pushed the build/neo4j-groovy4-baseline branch from c56a14c to c024658 Compare July 4, 2026 23:36
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✅ All tests passed ✅

🏷️ Commit: c024658
▶️ Tests: 18095 executed
⚪️ Checks: 39/39 completed


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@jdaugherty

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I'm confused - neo4j is right now not bound to the settings.gradle. This doesn't appear to update it for Grails 7 though. Is there another PR or are you updating the files separately due to the gorm api changes?

borinquenkid added a commit that referenced this pull request Jul 5, 2026
…radle

Answers reviewer question on #15816 about why grails-data-neo4j isn't
wired into root settings.gradle yet: it follows the same graphql
precedent (0e04cf1), just not folded in as this PR's scope.
@borinquenkid

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Thanks for flagging this, James — you're right that this PR doesn't touch settings.gradle.

Neo4j and graphql were both moved into this repo standalone (0e04cf1463) as a holding pattern while they hadn't caught up to the current baseline. graphql has since finished that migration and was folded into root settings.gradle for real; this PR is the neo4j equivalent of that first step — get it compiling and passing tests against core-impl's GORM (8.0.0-SNAPSHOT) while still a separate build, then wire it into GormRegistry (PR2, already up), then fold it into root settings.gradle the same way graphql was (PR3).

I've written up that PR3 scope in grails-data-neo4j/GORM_REGISTRY_MIGRATION.md on this branch so it's tracked rather than implied.

@jdaugherty

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FYI: https://github.com/apache/grails-core/tree/grails7-initial-neo4jUpdates already exists as an initial update pass

@jdaugherty

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@borinquenkid the problem I have with this PR is it is doing it in the opposite order of every other PR we have done for this. Are you planning to also merge this / integrate it into grails-core? If you're willing to do that work, then I'm ok abandoning the existing branch. Also, I did add a skill to assist in these type of integrations.

@borinquenkid

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@jdaugherty Yes — I own the full chain through the end. This is PR1 of 5 (#15816#15951#15817#15832#15833), and I intend to see all of them through to merge, not just this baseline step.

Also took your point on ordering: settings.gradle folding is no longer deferred to the end — I split it out into its own PR2 (#15951, stacked directly on this one) so the module becomes a real subproject of root right after the baseline lands, matching how grails-data-graphql did it. GormRegistry wiring is now PR3, examples/docs is PR4, checkstyle cleanup is PR5. Each PR's description has an updated reading-order banner linking the whole chain.

Given that, grails7-initial-neo4jUpdates should be safe to abandon — it predates the Groovy 5 / GormRegistry work (its merge-base is the original removal commit) and doesn't carry anything this chain doesn't already redo against the current baseline.

Thanks for flagging the skill too — will take a look before the next integration like this.

@jdaugherty

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@jdaugherty Yes — I own the full chain through the end. This is PR1 of 5 (#15816#15951#15817#15832#15833), and I intend to see all of them through to merge, not just this baseline step.

Also took your point on ordering: settings.gradle folding is no longer deferred to the end — I split it out into its own PR2 (#15951, stacked directly on this one) so the module becomes a real subproject of root right after the baseline lands, matching how grails-data-graphql did it. GormRegistry wiring is now PR3, examples/docs is PR4, checkstyle cleanup is PR5. Each PR's description has an updated reading-order banner linking the whole chain.

Given that, grails7-initial-neo4jUpdates should be safe to abandon — it predates the Groovy 5 / GormRegistry work (its merge-base is the original removal commit) and doesn't carry anything this chain doesn't already redo against the current baseline.

Thanks for flagging the skill too — will take a look before the next integration like this.

I reviewed the initial session O(M+N) PR. I gave a significant amount of feedback there that needs worked through. I'll try to work through the neoj prs here in the next few days. Will likely focus on getting the 7.x & nexts 8.x releases out first though.

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