From a41cbea48c283fc169fe7fb5f52fefd8a34dff44 Mon Sep 17 00:00:00 2001
From: Roland Praml <roland.praml@foconis.de>
Date: Fri, 12 Aug 2022 09:51:10 +0200
Subject: [PATCH] Fix if a managed table is used to connect different model
 pairs

---
 .../server/persist/SaveManyBeans.java            | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/ebean-core/src/main/java/io/ebeaninternal/server/persist/SaveManyBeans.java b/ebean-core/src/main/java/io/ebeaninternal/server/persist/SaveManyBeans.java
index aaa4b6ba2..90c4013b5 100644
--- a/ebean-core/src/main/java/io/ebeaninternal/server/persist/SaveManyBeans.java
+++ b/ebean-core/src/main/java/io/ebeaninternal/server/persist/SaveManyBeans.java
@@ -88,6 +88,22 @@ final class SaveManyBeans extends SaveManyBase {
       // OneToMany JoinTable
       return true;
     }
+    if (many.isTableManaged()) {
+      List<String> tables = new ArrayList<>(3);
+      tables.add(many.descriptor().baseTable());
+      tables.add(many.targetDescriptor().baseTable());
+      tables.add(many.intersectionTableJoin().getTable());
+      // put all tables in a deterministic order
+      tables.sort(Comparator.naturalOrder());
+
+      if (transaction.isSaveAssocManyIntersection(String.join("-", tables), many.descriptor().rootName())) {
+        // notify others, that we do save this transaction
+        transaction.isSaveAssocManyIntersection(many.intersectionTableJoin().getTable(), many.descriptor().rootName());
+        return true;
+      } else {
+        return false;
+      }
+    }
     return transaction.isSaveAssocManyIntersection(many.intersectionTableJoin().getTable(), many.descriptor().rootName());
   }