X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.db.common%2Fsrc%2Forg%2Fsimantics%2Fdb%2Fcommon%2Frequest%2FDependentInstances3.java;fp=bundles%2Forg.simantics.db.common%2Fsrc%2Forg%2Fsimantics%2Fdb%2Fcommon%2Frequest%2FDependentInstances3.java;h=9ef98c8bbec771ec968dad0fbad1753f87a2d8a3;hp=0000000000000000000000000000000000000000;hb=969bd23cab98a79ca9101af33334000879fb60c5;hpb=866dba5cd5a3929bbeae85991796acb212338a08

diff --git a/bundles/org.simantics.db.common/src/org/simantics/db/common/request/DependentInstances3.java b/bundles/org.simantics.db.common/src/org/simantics/db/common/request/DependentInstances3.java
new file mode 100644
index 000000000..9ef98c8bb
--- /dev/null
+++ b/bundles/org.simantics.db.common/src/org/simantics/db/common/request/DependentInstances3.java
@@ -0,0 +1,84 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.db.common.request;
+
+import java.util.Set;
+
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.Statement;
+import org.simantics.db.common.utils.NameUtils;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.service.CollectionSupport;
+import org.simantics.layer0.Layer0;
+import org.simantics.utils.Development;
+
+import gnu.trove.map.hash.THashMap;
+
+public class DependentInstances3 extends ResourceRead<ResourceSetGraph> {
+
+    private static final boolean DEBUG = false;
+
+    private static ThreadLocal<THashMap<DependentInstances3, ResourceSetGraph>> workArea = new ThreadLocal<THashMap<DependentInstances3, ResourceSetGraph>>() {
+        protected gnu.trove.map.hash.THashMap<DependentInstances3,ResourceSetGraph> initialValue() {
+            return new THashMap<>();
+        }
+    };
+
+	public DependentInstances3(Resource resource) {
+		super(resource);
+	}
+
+	@Override
+	public ResourceSetGraph perform(ReadGraph graph) throws DatabaseException {
+		
+		if(resource.equals(graph.getRootLibrary())) return new ResourceSetGraph(graph, resource);
+        
+		if(Development.DEVELOPMENT)
+			if(graph.isImmutable(resource))
+				System.err.println("Immutable resource in DependentInstances3: " + NameUtils.getSafeName(graph, resource, true));
+		
+        // This is a loop
+        THashMap<DependentInstances3, ResourceSetGraph> workingSet = workArea.get();
+        ResourceSetGraph result = workingSet.get(this);
+        if(result != null) return result;
+
+        result = new ResourceSetGraph(graph, resource);
+        
+        workingSet.put(this, result);
+        
+        CollectionSupport cs = graph.getService(CollectionSupport.class);
+        Set<Resource> objects = cs.createSet();
+        
+		Layer0 L0 = Layer0.getInstance(graph);
+		for(Statement dep : graph.getStatements(resource, L0.IsDependencyOf)) {
+			if(graph.isSubrelationOf(dep.getPredicate(), L0.HasPrevious)) continue;
+			Resource object = dep.getObject();
+			if(graph.isImmutable(object)) continue;
+			objects.add(object);
+		}
+		
+		for(Resource object : objects ) {
+            if(DEBUG)
+                System.err.println(NameUtils.getSafeName(graph, object, true) + " depends on " + NameUtils.getSafeName(graph, resource, true));
+		    DependentInstances3 query = new DependentInstances3(object);
+		    ResourceSetGraph instances = workingSet.get(query);
+		    if(instances == null) instances = graph.syncRequest(query);
+			result.references.add(instances);
+		}
+		
+		workingSet.remove(this);
+		return result;
+		
+	}
+
+}