From a83896f1ff77e854230d501ea698b26b78a434c8 Mon Sep 17 00:00:00 2001
From: rob bygrave <robin.bygrave@gmail.com>
Date: Tue, 22 Jan 2019 21:59:17 +1300
Subject: [PATCH] #1617 - save() on a reference bean causes insert to occur ...
 results in duplicate key exception

Fix
---
 .../io/ebeaninternal/server/persist/DefaultPersister.java     | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/main/java/io/ebeaninternal/server/persist/DefaultPersister.java b/src/main/java/io/ebeaninternal/server/persist/DefaultPersister.java
index ff8cd13c9..4fc291ca9 100644
--- a/src/main/java/io/ebeaninternal/server/persist/DefaultPersister.java
+++ b/src/main/java/io/ebeaninternal/server/persist/DefaultPersister.java
@@ -446,6 +446,10 @@ public final class DefaultPersister implements Persister {
   public void insert(EntityBean bean, Transaction t) {
 
     PersistRequestBean<?> req = createRequest(bean, t, PersistRequest.Type.INSERT);
+    if (req.isReference()) {
+      // skip insert on reference bean
+      return;
+    }
     try {
       req.initTransIfRequiredWithBatchCascade();
       insert(req);