From c3ab2a1dfa5f2cd9747b09041be2a99bbffc0ea9 Mon Sep 17 00:00:00 2001
From: frabacche <francesco.bacchelli@4science.com>
Date: Mon, 4 Mar 2024 11:47:54 +0100
Subject: [PATCH] check item linked to ldnMessage before storing a new solr
 document

---
 .../indexobject/LDNMessageEntityIndexFactoryImpl.java          | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/dspace-api/src/main/java/org/dspace/discovery/indexobject/LDNMessageEntityIndexFactoryImpl.java b/dspace-api/src/main/java/org/dspace/discovery/indexobject/LDNMessageEntityIndexFactoryImpl.java
index 7edb9438ada9..60312e1b3bb8 100644
--- a/dspace-api/src/main/java/org/dspace/discovery/indexobject/LDNMessageEntityIndexFactoryImpl.java
+++ b/dspace-api/src/main/java/org/dspace/discovery/indexobject/LDNMessageEntityIndexFactoryImpl.java
@@ -89,6 +89,9 @@ public SolrInputDocument buildDocument(Context context, IndexableLDNNotification
         doc.addField("queue_status_s", LDNMessageEntity.getQueueStatus(ldnMessage));
         addFacetIndex(doc, "queue_status", String.valueOf(ldnMessage.getQueueStatus()),
             LDNMessageEntity.getQueueStatus(ldnMessage));
+        if (ldnMessage.getObject() == null || ldnMessage.getObject().getID() == null) {
+            throw new SQLException("ldnMessage " + ldnMessage.getID() + " is linked to no Item.");
+        }
         Item item = itemService.findByIdOrLegacyId(context, ldnMessage.getObject().getID().toString());
         if (item != null) {
             addFacetIndex(doc, "object", item.getID().toString(), itemService.getMetadata(item, "dc.title"));