Added new method add_dc() to CMDOWS class (used in KE-chain projects).

Former-commit-id: 8124861c35228c9c429225dd8432ff1a05e70f7c

kadmos/cmdows/cmdows.py

@@ -301,6 +301,32 @@ class CMDOWS(object):
                 raise IOError('Invalid type for roles provided: {}.'.format(type(roles)))
         return
 
+    def add_dc(self, uid, id, mode_id, instance_id, version, label):
+        """Method to add a designCompetence element to the designCompetences branch."""
+
+        # Assert that there is a path to the designCompetences element or add one
+        parent_element = self.ensure_abs_xpath('/cmdows/executableBlocks/designCompetences')
+
+        # Assert that there is no existing element with the uid
+        try:
+            self.get_element_of_uid(uid)
+            raise AssertionError(
+                'UID {} is already used in the CMDOWS file at {}'.format(uid, self.get_xpath_of_uid(uid)))
+        except:
+            pass
+
+        # Add the design competence details
+        dc_element = Element('designCompetence', uID=uid)
+        dc_element.add('ID', id)
+        dc_element.add('modeID', mode_id)
+        dc_element.add('instanceID', instance_id)
+        dc_element.add('version', version)
+        dc_element.add('label', label)
+
+        parent_element.append(dc_element)
+
+        return
+
     def add_dc_general_info(self, dc_uid, description, status=None, creation_date=None, owner_uid=None, creator_uid=None,
                             operator_uid=None, model_definition=None):
         """Method to add a general info element to a dc branch."""