From: JaniSimomaa <JaniSimomaa@DESKTOP-91EJL8G>
Date: Mon, 8 Jul 2019 12:08:49 +0000 (+0300)
Subject: Add functions for finding elements by DN id
X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fdistrict.git;a=commitdiff_plain;h=17a1044ecff7d5ea0c77ce56e1cc7a668e38adf4

Add functions for finding elements by DN id

gitlab #54

Change-Id: I948de22bc07d1c1cf1120ba37754c81b49d2e29f
---

diff --git a/org.simantics.district.network/META-INF/MANIFEST.MF b/org.simantics.district.network/META-INF/MANIFEST.MF
index 761e37fb..ddf8bb90 100644
--- a/org.simantics.district.network/META-INF/MANIFEST.MF
+++ b/org.simantics.district.network/META-INF/MANIFEST.MF
@@ -17,7 +17,8 @@ Require-Bundle: org.simantics.db,
  org.simantics;bundle-version="1.0.0",
  org.slf4j.api,
  org.simantics.maps.elevation.server;bundle-version="1.0.0",
- org.simantics.modeling
+ org.simantics.modeling,
+ org.simantics.db.indexing
 Export-Package: org.simantics.district.network,
  org.simantics.district.network.changeset,
  org.simantics.district.network.profile
diff --git a/org.simantics.district.network/scl/Simantics/District.scl b/org.simantics.district.network/scl/Simantics/District.scl
index 56e8edb4..0e79ef77 100644
--- a/org.simantics.district.network/scl/Simantics/District.scl
+++ b/org.simantics.district.network/scl/Simantics/District.scl
@@ -153,3 +153,6 @@ dnElementsMappedToComponents mappedComponents = mapMaybe possibleDNElementMapped
 importJava "org.simantics.district.network.DistrictNetworkUtil" where
     createNetworkDiagram :: Resource -> Resource -> String -> Resource -> Resource -> Resource -> Resource -> Resource -> <WriteGraph, Proc> Resource
     changeMappingType :: Resource -> [Resource] -> <WriteGraph, Proc> ()
+    findDNElementById :: Resource -> String -> <ReadGraph, Proc> Maybe Resource
+    findDNElementByXYCoordinates :: Resource -> Double -> Double -> Double -> <ReadGraph, Proc> [Resource]
+
diff --git a/org.simantics.district.network/src/org/simantics/district/network/DistrictNetworkUtil.java b/org.simantics.district.network/src/org/simantics/district/network/DistrictNetworkUtil.java
index cf06ca8c..596c3667 100644
--- a/org.simantics.district.network/src/org/simantics/district/network/DistrictNetworkUtil.java
+++ b/org.simantics.district.network/src/org/simantics/district/network/DistrictNetworkUtil.java
@@ -1,8 +1,12 @@
 package org.simantics.district.network;
 
+import java.awt.geom.Rectangle2D;
+import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Iterator;
 import java.util.List;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
 
 import org.simantics.databoard.Bindings;
 import org.simantics.datatypes.literal.RGB;
@@ -11,12 +15,14 @@ import org.simantics.db.ReadGraph;
 import org.simantics.db.Resource;
 import org.simantics.db.WriteGraph;
 import org.simantics.db.common.procedure.adapter.TransientCacheListener;
+import org.simantics.db.common.request.IndexRoot;
 import org.simantics.db.common.request.ResourceRead;
 import org.simantics.db.common.utils.OrderedSetUtils;
 import org.simantics.db.exception.BindingException;
 import org.simantics.db.exception.DatabaseException;
 import org.simantics.db.exception.ManyObjectsForFunctionalRelationException;
 import org.simantics.db.exception.ServiceException;
+import org.simantics.db.indexing.IndexUtils;
 import org.simantics.db.layer0.request.PossibleVariable;
 import org.simantics.db.layer0.variable.Variable;
 import org.simantics.diagram.stubs.DiagramResource;
@@ -28,9 +34,13 @@ import org.simantics.layer0.Layer0;
 import org.simantics.modeling.ModelingResources;
 import org.simantics.modeling.adapters.NewCompositeActionFactory;
 import org.simantics.operation.Layer0X;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 public class DistrictNetworkUtil {
 
+    private static final Logger LOGGER = LoggerFactory.getLogger(DistrictNetworkUtil.class);
+
     public static Resource createEdge(WriteGraph graph, Resource composite, double[] detailedGeometryCoords) throws DatabaseException {
         return createEdge(graph, composite, graph.getPossibleObject(composite, DistrictNetworkResource.getInstance(graph).EdgeDefaultMapping), detailedGeometryCoords);
     }
@@ -303,4 +313,43 @@ public class DistrictNetworkUtil {
             graph.claim(element, DN.HasMapping, newMapping);
         }
     }
+
+    public static Stream<Resource> findDNElementsById(ReadGraph graph, Resource context, String idToFind) throws DatabaseException {
+        DistrictNetworkResource DN = DistrictNetworkResource.getInstance(graph); 
+        return IndexUtils.findByType(graph,
+            graph.syncRequest(new IndexRoot(context)),
+            DN.Element
+        ).stream().filter(element -> {
+            try {
+                String id = graph.getPossibleRelatedValue(element, DN.HasId, Bindings.STRING);
+                return id != null && id.contains(idToFind);
+            } catch (DatabaseException e) {
+                LOGGER.error("Could not read id for element {]", element, e);
+                return false;
+            }
+        });
+    }
+    
+    public static Resource findDNElementById(ReadGraph graph, Resource context, String idToFind) throws DatabaseException {
+        List<Resource> elements = findDNElementsById(graph, context, idToFind).collect(Collectors.toList());
+        if (elements.size() == 1) {
+            return elements.iterator().next();
+        }
+        return null;
+    }
+    
+    public static List<Resource> findDNElementByXYCoordinates(ReadGraph graph, Resource context, double lat, double lon, double padding) throws DatabaseException {
+        DistrictNetworkResource DN = DistrictNetworkResource.getInstance(graph);
+        DiagramResource DIA = DiagramResource.getInstance(graph);
+        List<Resource> results = new ArrayList<>();
+        Collection<Resource> vertices = IndexUtils.findByType(graph, graph.syncRequest(new IndexRoot(context)), DN.Vertex);
+        Rectangle2D rect = new Rectangle2D.Double(lat, lon, padding, padding);
+        for (Resource vertex : vertices) {
+            double[] location = graph.getRelatedValue(vertex, DIA.HasLocation, Bindings.DOUBLE_ARRAY);
+            if (rect.contains(location[0], location[1])) {
+                results.add(vertex);
+            }
+        }
+        return results;
+    }
 }