(cayenne) 02/02: Telling Claude to use Java 11 for Gradle

[aa...@apache.org]

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asf-gitbox-commits pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/cayenne.git

commit 29911e00ed4e5ba7cbdb9dde88dbba1b37957f94
Author: Andrus Adamchik <an...@objectstyle.com>
AuthorDate: Sun May 3 11:20:30 2026 -0400

    Telling Claude to use Java 11 for Gradle
---
 .claude/rules/cayenne-gradle-plugin/build-jdk.md | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/.claude/rules/cayenne-gradle-plugin/build-jdk.md b/.claude/rules/cayenne-gradle-plugin/build-jdk.md
new file mode 100644
index 000000000..7485e34a7
--- /dev/null
+++ b/.claude/rules/cayenne-gradle-plugin/build-jdk.md
@@ -0,0 +1,22 @@
+---
+paths:
+  - "cayenne-gradle-plugin/**"
+description: cayenne-gradle-plugin must build on Java 11
+---
+
+Any Maven build that includes `cayenne-gradle-plugin` (the module itself, or
+any reactor invocation that doesn't exclude it) must be run on **Java 11**.
+
+The module's tests run a Gradle build via `exec-maven-plugin`, which spins up a
+Gradle daemon that compiles `build.gradle` with its embedded Groovy. That Groovy
+version cannot read class files newer than the daemon's supported JVM. On newer
+JDKs the build fails before any test runs with:
+
+> BUG! exception in phase 'semantic analysis' in source unit '_BuildScript_'
+> Unsupported class file major version NN
+
+To run a full reactor build on a newer JDK, exclude this module:
+
+```
+mvn clean verify -pl '!cayenne-gradle-plugin'
+```