From b44fdd2de43a4cd794a812c1eefb47d19b56a465 Mon Sep 17 00:00:00 2001
From: Ben Bosman <ben@atmire.com>
Date: Fri, 19 Feb 2021 17:48:01 +0100
Subject: [PATCH] JavaDocs

---
 .../org/dspace/content/dao/impl/MetadataFieldDAOImpl.java     | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/dspace-api/src/main/java/org/dspace/content/dao/impl/MetadataFieldDAOImpl.java b/dspace-api/src/main/java/org/dspace/content/dao/impl/MetadataFieldDAOImpl.java
index 907b2892a9..e64aaa4dd2 100644
--- a/dspace-api/src/main/java/org/dspace/content/dao/impl/MetadataFieldDAOImpl.java
+++ b/dspace-api/src/main/java/org/dspace/content/dao/impl/MetadataFieldDAOImpl.java
@@ -42,6 +42,10 @@ public class MetadataFieldDAOImpl extends AbstractHibernateDAO<MetadataField> im
      */
     private static Logger log = org.apache.logging.log4j.LogManager.getLogger(MetadataFieldDAOImpl.class);
 
+    /**
+     * Cache for improvement the performance of searching metadata fields
+     * This cache only stores IDs, the actual MetadataField is retrieved from hibernate
+     */
     private static Map<String, Integer> cachedFields = new HashMap();
 
     protected MetadataFieldDAOImpl() {