From 0f6b43605de2fd104f437f8124e98a48c034a768 Mon Sep 17 00:00:00 2001
From: Peter Hormanns <peter.hormanns@jalin.de>
Date: Wed, 27 Oct 2021 21:07:42 +0200
Subject: [PATCH] allow empty string as date value nil

---
 .../module/property/mapping/DefaultDateParameterMapMapper.java  | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/framework/src/main/java/de/hsadmin/module/property/mapping/DefaultDateParameterMapMapper.java b/framework/src/main/java/de/hsadmin/module/property/mapping/DefaultDateParameterMapMapper.java
index 537fb47..ba3ab4f 100644
--- a/framework/src/main/java/de/hsadmin/module/property/mapping/DefaultDateParameterMapMapper.java
+++ b/framework/src/main/java/de/hsadmin/module/property/mapping/DefaultDateParameterMapMapper.java
@@ -27,7 +27,7 @@ public class DefaultDateParameterMapMapper implements ParameterMapMapper<Date> {
 		if (value instanceof Date) {
 			return (Date) value;
 		}
-		if (value instanceof String) {
+		if (value instanceof String && ((String) value).trim().length() == 0) {
 			try {
 				return DateUtil.DEFAULT_DATEFORMAT.parse((String) value);
 			} catch (ParseException e) {