From 70e529e0e17e2ad55462a303afa268d53c51c3a0 Mon Sep 17 00:00:00 2001
From: Tuukka Lehtonen <tuukka.lehtonen@semantum.fi>
Date: Mon, 10 Dec 2018 15:16:17 +0200
Subject: [PATCH] Added new functions to Simantics/District

* possibleMappedComponent
* possibleDNElementMappedToComponent
* dnElementsMappedToComponents

gitlab #23

Change-Id: Ic6775beef2f6be30af655f4af243f1ee733b8842
---
 .../scl/Simantics/District.scl                | 46 +++++++++++++++----
 1 file changed, 38 insertions(+), 8 deletions(-)

diff --git a/org.simantics.district.network/scl/Simantics/District.scl b/org.simantics.district.network/scl/Simantics/District.scl
index b99442e6..36dee397 100644
--- a/org.simantics.district.network/scl/Simantics/District.scl
+++ b/org.simantics.district.network/scl/Simantics/District.scl
@@ -85,6 +85,15 @@ importJava "org.simantics.district.network.DistrictNetworkUtil" where
     createVertex :: Resource -> Vector Double -> Resource -> <WriteGraph, Proc> Resource
     createEdge :: Resource -> Resource -> <WriteGraph, Proc> Resource
 
+"""
+Tries to look for the Resource representing the configuration component
+mapped to the specified district network diagram element.
+"""
+possibleMappedComponent :: Resource -> <ReadGraph> Maybe Resource
+possibleMappedComponent r = match possibleObject r DN.MappedComponent with
+    Nothing -> Nothing
+    Just me -> possibleObject me MOD.ElementToComponent
+
 """
 Tries to look for the Variable representing the configuration component
 mapped to the specified district network diagram element.
@@ -93,15 +102,13 @@ The variable returned is by default the active experiment context variable
 but if that is not available then a configuration context variable is returned.
 """
 possibleMappedComponentVariable :: Resource -> <ReadGraph> Maybe Variable
-possibleMappedComponentVariable r = match possibleObject r DN.MappedComponent with
+possibleMappedComponentVariable r = match possibleMappedComponent r with
     Nothing -> Nothing
-    Just me -> match possibleObject me MOD.ElementToComponent with
-        Nothing -> Nothing
-        Just mc -> do
-            mcv = resourceVariable mc
-            match possibleActiveVariable mcv with
-                Nothing -> Just mcv
-                a       -> a
+    Just mc -> do
+        mcv = resourceVariable mc
+        match possibleActiveVariable mcv with
+            Nothing -> Just mcv
+            a       -> a
 
 """
 """
@@ -118,3 +125,26 @@ mappedComponentPropertyValue def propName r = match possibleMappedComponentVaria
     Just mv -> match possiblePropertyValue mv propName with
         Nothing -> def
         Just v  -> v
+
+"""
+Returns possible district network element that is mapped to the
+specified model configuration component. The DN element is found
+using the following relation path:
+
+    domain model configuration component ---[MOD.ComponentToElement]---> domain model diagram element
+                                         ----[DN.MappedFromElement]----> district network diagram element
+"""
+possibleDNElementMappedToComponent :: Resource -> <ReadGraph> Maybe Resource
+possibleDNElementMappedToComponent mappedComponent = match possibleObject mappedComponent MOD.ComponentToElement with
+    Nothing      -> Nothing
+    Just element -> possibleObject element DN.MappedFromElement
+
+"""
+Returns all district network elements that are found to be mapped the
+specified mapped model configuration components by
+[possibleDNElementMappedToComponent](possibleDNElementMappedToComponent).
+
+The result list can be smaller than the input resource list, even empty.
+"""
+dnElementsMappedToComponents :: [Resource] -> <ReadGraph> [Resource]
+dnElementsMappedToComponents mappedComponents = mapMaybe possibleDNElementMappedToComponent mappedComponents
-- 
2.45.2