fix(jans): added null check to avoid NullPointerException

jans-config-api/docs/jans-config-api-swagger-auto.yaml

@@ -7178,19 +7178,19 @@ components:
           $ref: '#/components/schemas/AttributeValidation'
         tooltip:
           type: string
-        adminCanAccess:
-          type: boolean
-        userCanAccess:
+        whitePagesCanView:
           type: boolean
-        userCanView:
+        adminCanAccess:
           type: boolean
         adminCanView:
           type: boolean
-        userCanEdit:
+        userCanAccess:
           type: boolean
         adminCanEdit:
           type: boolean
-        whitePagesCanView:
+        userCanView:
+          type: boolean
+        userCanEdit:
           type: boolean
         baseDn:
           type: string
@@ -7526,10 +7526,6 @@ components:
         ttl:
           type: integer
           format: int32
-        displayName:
-          type: string
-        tokenBindingSupported:
-          type: boolean
         authenticationMethod:
           type: string
           enum:
@@ -7646,13 +7642,6 @@ components:
           type: object
           additionalProperties:
             type: string
-        value:
-          type: string
-        languageTags:
-          uniqueItems: true
-          type: array
-          items:
-            type: string
     AppConfiguration:
       type: object
       properties:
@@ -8345,17 +8334,6 @@ components:
           $ref: '#/components/schemas/EngineConfig'
         ssaConfiguration:
           $ref: '#/components/schemas/SsaConfiguration'
-        fapi:
-          type: boolean
-        allResponseTypesSupported:
-          uniqueItems: true
-          type: array
-          items:
-            type: string
-            enum:
-            - code
-            - token
-            - id_token
         enabledFeatureFlags:
           uniqueItems: true
           type: array
@@ -8383,6 +8361,17 @@ components:
             - STAT
             - PAR
             - SSA
+        allResponseTypesSupported:
+          uniqueItems: true
+          type: array
+          items:
+            type: string
+            enum:
+            - code
+            - token
+            - id_token
+        fapi:
+          type: boolean
     AuthenticationFilter:
       required:
       - baseDn
@@ -8639,13 +8628,13 @@ components:
           type: boolean
         internal:
           type: boolean
+        locationPath:
+          type: string
         locationType:
           type: string
           enum:
           - ldap
           - file
-        locationPath:
-          type: string
         baseDn:
           type: string
     ScriptError:

jans-orm/model/src/main/java/io/jans/orm/model/base/CustomObjectAttribute.java

@@ -43,15 +43,15 @@ public Object getValue() {
             return null;
         }
 
-        if (this.values.size() > 0) {
+        if (!this.values.isEmpty()) {
             return this.values.get(0);
         }
 
         return null;
     }
 
     public void setValue(Object value) {
-        this.values = new ArrayList<Object>();
+        this.values = new ArrayList<>();
         this.values.add(value);
         this.multiValued = false;
     }
@@ -89,7 +89,7 @@ public String getDisplayValue() {
         }
 
         if (values.size() == 1) {
-            return values.get(0).toString();
+            return (values.get(0)!=null ? values.get(0).toString() : "");
         }
 
         StringBuilder sb = new StringBuilder();

jans-orm/model/src/main/java/io/jans/orm/model/base/LocalizedString.java

@@ -72,9 +72,10 @@ public int size() {
         return values.size();
     }
 
+    @SuppressWarnings("unchecked")
     @JsonIgnore
     public Set<String> getLanguageTags() {
-        return values.keySet();
+        return (values!=null ? values.keySet() : Collections.emptySet());
     }
 
     public String addLdapLanguageTag(String ldapAttributeName, String languageTag) {