Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.document.server / src / org / simantics / document / server / request / NodesRequest.java

diff --git a/bundles/org.simantics.document.server/src/org/simantics/document/server/request/NodesRequest.java b/bundles/org.simantics.document.server/src/org/simantics/document/server/request/NodesRequest.java
new file mode 100644 (file)
index 0000000..11bf514
--- /dev/null
+++ b/bundles/org.simantics.document.server/src/org/simantics/document/server/request/NodesRequest.java
@@ -0,0 +1,47 @@
+package org.simantics.document.server.request;\r
+\r
+import gnu.trove.set.hash.THashSet;\r
+\r
+import java.util.Collection;\r
+import java.util.Collections;\r
+import java.util.Set;\r
+\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.layer0.request.VariableChildren;\r
+import org.simantics.db.layer0.request.VariableRead;\r
+import org.simantics.db.layer0.variable.Variable;\r
+import org.simantics.structural.stubs.StructuralResource2;\r
+\r
+public class NodesRequest extends VariableRead<Set<Variable>> {\r
+\r
+    public NodesRequest(Variable var) {\r
+        super(var);\r
+       }\r
+\r
+       @Override\r
+       public Set<Variable> perform(ReadGraph graph) throws DatabaseException {\r
+           \r
+               long s = System.nanoTime();\r
+               \r
+               StructuralResource2.getInstance(graph);\r
+               if(variable == null)\r
+                       return Collections.emptySet();\r
+\r
+               Set<Variable> nodes = new THashSet<Variable>();\r
+               Collection<Variable> children = graph.syncRequest(new VariableChildren(variable));\r
+               for(Variable child : children) {\r
+                       Set<Variable> childNodes = graph.syncRequest(new NodesRequest2(child));\r
+                       nodes.addAll(childNodes);\r
+               }\r
+               \r
+        if(DocumentRequest.PROFILE) {\r
+               long dura = System.nanoTime()-s;\r
+               System.err.println("NodesRequest " + System.identityHashCode(this) + " " + variable.getURI(graph) + " in " + 1e-6*dura + "ms.");\r
+        }\r
+               \r
+               return nodes;\r
+\r
+       }\r
+\r
+}
\ No newline at end of file