rzo1 commented on code in PR #144:
URL: https://github.com/apache/openjpa/pull/144#discussion_r3801780390
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openjpa-kernel/src/main/java/org/apache/openjpa/meta/MetaDataRepository.java:
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@@ -2365,10 +2419,20 @@ public boolean is_systemListenersActivated() {
* Add the given system lifecycle listener.
*/
public void addSystemListener(Object listener) {
+ addSystemListener(listener, null);
+ }
+
+ /**
+ * Add a system lifecycle listener with an optional deduplication key.
+ * If a key is provided and a listener with the same key was already
+ * registered, the duplicate is silently skipped.
+ */
+ public void addSystemListener(Object listener, String key) {
+ if (key != null && !_systemListenerKeys.add(key)) {
Review Comment:
Looks ok to me.
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