Split the sort field into sort and order for better usage

This splits the sort field which was previously delimited by a space. As this is the only active project using this functionality, this is a safe change.

persistence/runtime/src/main/java/org/eclipsefoundation/persistence/model/RDBMSQuery.java

@@ -70,16 +70,16 @@ public class RDBMSQuery<T extends BareNode> {
 
 		// get fields that make up the required fields to enable pagination and check
 		String sortVal = params.getFirst(PersistenceUrlParameterNames.SORT.getName());
+		String orderValRaw = params.getFirst(PersistenceUrlParameterNames.ORDER.getName());
+		String orderVal = orderValRaw == null ? SortOrder.ASCENDING.name(): orderValRaw;
 		if (sortVal != null) {
-			SortOrder ord = SortOrder.getOrderFromValue(sortVal);
-			// split sort string of `<fieldName> <SortOrder>`
-			int idx = sortVal.indexOf(' ');
+			SortOrder ord = SortOrder.getOrderFromValue(orderVal);
 			// check if the sort string matches the RANDOM sort order
 			if (SortOrder.RANDOM.equals(ord)) {
 				filter.setOrder(SortOrder.RANDOM);
 				this.order = SortOrder.RANDOM;
 			} else if (ord != SortOrder.NONE) {
-				setSort(sortVal.substring(0, idx), sortVal.substring(idx + 1));
+				setSort(sortVal, ord);
 			}
 		}
 	}
@@ -114,11 +114,11 @@ public class RDBMSQuery<T extends BareNode> {
 		return -1;
 	}
 
-	private void setSort(String sortField, String sortOrder) {
+	private void setSort(String sortField, SortOrder sortOrder) {
 		List<Sortable<?>> fields = SortableHelper.getSortableFields(getDocType());
 		Optional<Sortable<?>> fieldContainer = SortableHelper.getSortableFieldByName(fields, sortField);
 		if (fieldContainer.isPresent()) {
-			this.order = SortOrder.getOrderByName(sortOrder);
+			this.order = sortOrder;
 			// add sorting query if the sortOrder matches a defined order
 			switch (order) {
 			case ASCENDING: