Refactor AddBrickRelation to combine object namespace+label in operator

This is an important change that should make adding relations through other methods easier to implement

src/blenderbim/blenderbim/bim/module/brick/operator.py

@@ -144,12 +144,15 @@ class AddBrickRelation(bpy.types.Operator, Operator):
     def _execute(self, context):
         props = context.scene.BIMBrickProperties
         brick = props.bricks[props.active_brick_index]
+        if props.new_brick_relation_type == "http://www.w3.org/2000/01/rdf-schema#label":
+            object = props.new_brick_relation_object
+        else: 
+            object = props.new_brick_relation_namespace + props.new_brick_relation_object
         core.add_brick_relation(
             tool.Brick,
             brick_uri=brick.uri,
             predicate=props.new_brick_relation_type,
-            namespace=props.new_brick_relation_namespace,
-            object=props.new_brick_relation_object
+            object=object
         )
 
 

src/blenderbim/blenderbim/core/brick.py

@@ -78,8 +78,8 @@ def add_brick(ifc, brick, element=None, namespace=None, brick_class=None, librar
     brick.run_refresh_brick_viewer()
 
 
-def add_brick_relation(brick, brick_uri=None, predicate=None, namespace=None, object=None):
-    brick.add_relation(brick_uri, predicate, namespace, object)
+def add_brick_relation(brick, brick_uri=None, predicate=None, object=None):
+    brick.add_relation(brick_uri, predicate, object)
     brick.run_refresh_brick_viewer()
 
 

src/blenderbim/blenderbim/tool/brick.py

@@ -100,22 +100,21 @@ class Brick(blenderbim.core.tool.Brick):
         )
 
     @classmethod
-    def add_relation(cls, brick_uri, predicate, namespace, object):
+    def add_relation(cls, brick_uri, predicate, object):
         if predicate == "http://www.w3.org/2000/01/rdf-schema#label":
             with BrickStore.new_changeset() as cs:
                 cs.add((URIRef(brick_uri), URIRef(predicate), Literal(object)))
             bpy.context.scene.BIMBrickProperties.new_brick_relation_type = BrickStore.relationships[0][0]
             bpy.context.scene.BIMBrickProperties.add_relation_failed = False
             return
-        object_uri = namespace + object
         query = BrickStore.graph.query(
-            "ASK { <{object_uri}> ?predicate ?object . }".replace(
-                "{object_uri}", object_uri
+            "ASK { <{object_uri}> a ?o . }".replace(
+                "{object_uri}", object
             )
         )
         if query:
             with BrickStore.new_changeset() as cs:
-                cs.add((URIRef(brick_uri), URIRef(predicate), URIRef(object_uri)))
+                cs.add((URIRef(brick_uri), URIRef(predicate), URIRef(object)))
             bpy.context.scene.BIMBrickProperties.add_relation_failed = False
         else:
             bpy.context.scene.BIMBrickProperties.add_relation_failed = True