-package org.simantics.db.layer0.request;\r
-\r
-import java.util.Collection;\r
-import java.util.Collections;\r
-import java.util.HashMap;\r
-import java.util.Map;\r
-\r
-import org.simantics.databoard.Bindings;\r
-import org.simantics.db.ReadGraph;\r
-import org.simantics.db.Resource;\r
-import org.simantics.db.common.request.PossibleIndexRoot;\r
-import org.simantics.db.common.request.ResourceRead2;\r
-import org.simantics.db.exception.DatabaseException;\r
-import org.simantics.db.layer0.adapter.Instances;\r
-import org.simantics.layer0.Layer0;\r
-import org.simantics.simulation.ontology.SimulationResource;\r
-\r
-/**\r
- * Returns a Name->Resource map for instances of given type in a given model.\r
- * \r
- * Uses Dependencies-index for obtaining instances. Uses L0.HasName for\r
- * obtaining name.\r
- * \r
- * @author Antti Villberg\r
- */\r
-public class ModelInstances extends ResourceRead2<Map<String, Resource>> {\r
-\r
- /**\r
- * @parameter modelPart is a Resource with URI under a model e.g. model can\r
- * be found using L0.PartOf\r
- * @parameter type is the type to search instances for. The query returns\r
- * properly all instances of all subtypes.\r
- */\r
- public ModelInstances(Resource modelPart, Resource type) {\r
- super(modelPart, type);\r
- }\r
-\r
- private Resource getModel(ReadGraph graph) throws DatabaseException {\r
- SimulationResource SIMU = SimulationResource.getInstance(graph);\r
- if (graph.isInstanceOf(resource, SIMU.Model)) {\r
- return resource;\r
- } else {\r
- return graph.sync(new PossibleIndexRoot(resource));\r
- }\r
- }\r
-\r
- @Override\r
- public Map<String, Resource> perform(ReadGraph graph) throws DatabaseException {\r
-\r
- Layer0 L0 = Layer0.getInstance(graph);\r
-\r
- Instances query = graph.adapt(resource2, Instances.class);\r
- if (query == null)\r
- return Collections.emptyMap();\r
-\r
- Resource model = getModel(graph);\r
- if(model == null)\r
- return Collections.emptyMap();\r
- Collection<Resource> queryResult = query.find(graph, model);\r
- if (queryResult.isEmpty())\r
- return Collections.emptyMap();\r
-\r
- Map<String, Resource> result = new HashMap<String, Resource>(queryResult.size());\r
- for(Resource instance : queryResult) {\r
- String name = graph.getRelatedValue(instance, L0.HasName, Bindings.STRING);\r
- result.put(name, instance);\r
- }\r
- return result;\r
-\r
- }\r
-\r
-}\r
+package org.simantics.db.layer0.request;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.simantics.databoard.Bindings;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.common.request.PossibleIndexRoot;
+import org.simantics.db.common.request.ResourceRead2;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.layer0.adapter.Instances;
+import org.simantics.layer0.Layer0;
+import org.simantics.simulation.ontology.SimulationResource;
+
+/**
+ * Returns a Name->Resource map for instances of given type in a given model.
+ *
+ * Uses Dependencies-index for obtaining instances. Uses L0.HasName for
+ * obtaining name.
+ *
+ * @author Antti Villberg
+ */
+public class ModelInstances extends ResourceRead2<Map<String, Resource>> {
+
+ /**
+ * @parameter modelPart is a Resource with URI under a model e.g. model can
+ * be found using L0.PartOf
+ * @parameter type is the type to search instances for. The query returns
+ * properly all instances of all subtypes.
+ */
+ public ModelInstances(Resource modelPart, Resource type) {
+ super(modelPart, type);
+ }
+
+ private Resource getModel(ReadGraph graph) throws DatabaseException {
+ SimulationResource SIMU = SimulationResource.getInstance(graph);
+ if (graph.isInstanceOf(resource, SIMU.Model)) {
+ return resource;
+ } else {
+ return graph.sync(new PossibleIndexRoot(resource));
+ }
+ }
+
+ @Override
+ public Map<String, Resource> perform(ReadGraph graph) throws DatabaseException {
+
+ Layer0 L0 = Layer0.getInstance(graph);
+
+ Instances query = graph.adapt(resource2, Instances.class);
+ if (query == null)
+ return Collections.emptyMap();
+
+ Resource model = getModel(graph);
+ if(model == null)
+ return Collections.emptyMap();
+ Collection<Resource> queryResult = query.find(graph, model);
+ if (queryResult.isEmpty())
+ return Collections.emptyMap();
+
+ Map<String, Resource> result = new HashMap<String, Resource>(queryResult.size());
+ for(Resource instance : queryResult) {
+ String name = graph.getRelatedValue(instance, L0.HasName, Bindings.STRING);
+ result.put(name, instance);
+ }
+ return result;
+
+ }
+
+}