Close #291

Author: Open Lowcode SAS

src/org/openlowcode/client/graphic/widget/CMultiFieldConstraint.java

@@ -110,13 +110,14 @@ public CMultiFieldConstraint(MessageReader reader, ArrayList<CBusinessField<?>>
 		while (reader.structureArrayHasNextElement("VAL")) {
 			ArrayList<String> combination = new ArrayList<String>();
 			reader.startStructureArray("VALELT");
+			
 			while (reader.structureArrayHasNextElement("VALELT")) {
 				int index = combination.size();
 				String value = reader.returnNextStringField("ELT");
 				if (index >= constrainedfields.size())
 					throw new RuntimeException("value element is index " + index + " but there are only "
 							+ constrainedfields.size() + " constrained values.");
-				if (!constrainedfields.get(index).isRestrictionValid(value))
+				if (value.length()>0) if (!constrainedfields.get(index).isRestrictionValid(value))
 					throw new RuntimeException("restriction is not valid " + value);
 				combination.add(value);
 				reader.returnNextEndStructure("VALELT");

src/org/openlowcode/design/utility/MultiFieldConstraint.java

@@ -126,7 +126,7 @@ public void generateFile(SourceGenerator sg, Module module) throws IOException {
 			boolean done = false;
 			if (thisfield instanceof ChoiceField) {
 				sg.wl("		rawconstraintline.add((" + thisfield.getName().toLowerCase() + "!=null?"
-						+ thisfield.getName().toLowerCase() + ".getStorageCode():null));");
+						+ thisfield.getName().toLowerCase() + ".getStorageCode():\"\"));");
 				done = true;
 			}
 			if (thisfield instanceof DecimalField) {