From 576518ab63ec71b6273dbc3f4a9c920f9b6ccad1 Mon Sep 17 00:00:00 2001
From: Jens Pelzetter <jens.pelzetter@googlemail.com>
Date: Mon, 31 Oct 2022 11:10:56 +0100
Subject: [PATCH] Added missing JsonIdentityReferenceAnnotation

---
 .../java/org/librecms/contentsection/Folder.java | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/ccm-cms/src/main/java/org/librecms/contentsection/Folder.java b/ccm-cms/src/main/java/org/librecms/contentsection/Folder.java
index e318c9622..8580c5086 100644
--- a/ccm-cms/src/main/java/org/librecms/contentsection/Folder.java
+++ b/ccm-cms/src/main/java/org/librecms/contentsection/Folder.java
@@ -19,6 +19,7 @@
 package org.librecms.contentsection;
 
 import com.fasterxml.jackson.annotation.JsonIdentityInfo;
+import com.fasterxml.jackson.annotation.JsonIdentityReference;
 import com.fasterxml.jackson.annotation.ObjectIdGenerators;
 import org.libreccm.categorization.Categorization;
 
@@ -316,11 +317,14 @@ public class Folder extends Category implements Serializable {
     private static final long serialVersionUID = 1L;
 
     @OneToOne(fetch = FetchType.LAZY)
-    @JoinTable(name = "FOLDER_CONTENT_SECTION_MAP", schema = DB_SCHEMA,
-               inverseJoinColumns = {
-                   @JoinColumn(name = "CONTENT_SECTION_ID")},
-               joinColumns = {
-                   @JoinColumn(name = "FOLDER_ID")})
+    @JoinTable(
+        name = "FOLDER_CONTENT_SECTION_MAP", schema = DB_SCHEMA,
+        inverseJoinColumns = {
+            @JoinColumn(name = "CONTENT_SECTION_ID")},
+        joinColumns = {
+            @JoinColumn(name = "FOLDER_ID")}
+    )
+    @JsonIdentityReference(alwaysAsId = true)
     private ContentSection section;
 
     @Column(name = "TYPE", nullable = false)
@@ -351,7 +355,7 @@ public class Folder extends Category implements Serializable {
     protected void setObjects(final List<Categorization> objects) {
         super.setObjects(objects);
     }
-    
+
     @Override
     protected void setSubCategories(final List<Category> subCategories) {
         super.setSubCategories(subCategories);