Simupedia tuning step 2

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

diff --git a/bundles/org.simantics.document.server/src/org/simantics/document/server/request/ServerSCLValueRequestBase.java b/bundles/org.simantics.document.server/src/org/simantics/document/server/request/ServerSCLValueRequestBase.java
new file mode 100644 (file)
index 0000000..ab23e2a
--- /dev/null
+++ b/bundles/org.simantics.document.server/src/org/simantics/document/server/request/ServerSCLValueRequestBase.java
@@ -0,0 +1,43 @@
+package org.simantics.document.server.request;
+
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.common.request.IndexRoot;
+import org.simantics.db.common.request.PossibleTypedParent;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.layer0.scl.AbstractExpressionCompilationContext;
+import org.simantics.db.layer0.scl.AbstractExpressionCompilationRequest;
+import org.simantics.document.base.ontology.DocumentationResource;
+import org.simantics.structural2.scl.FindPossibleComponentTypeRequest;
+import org.simantics.utils.datastructures.Pair;
+
+abstract public class ServerSCLValueRequestBase<ASD extends AbstractExpressionCompilationContext> extends AbstractExpressionCompilationRequest<ASD, Object> {
+
+    static Pair<Resource,Resource> getComponentTypeAndRoot(ReadGraph graph, Resource component, Resource literal)  throws DatabaseException {
+        if(component != null) {
+            Resource type = graph.syncRequest(new FindPossibleComponentTypeRequest(component));
+            if(type != null) {
+                Resource root = graph.syncRequest(new IndexRoot(type));
+                return Pair.make(type, root);
+            } else {
+                Resource doc = graph.syncRequest(new PossibleTypedParent(component, DocumentationResource.getInstance(graph).Document));
+                if(doc != null) {
+                    Resource componentType = graph.getSingleType(doc);
+                    Resource root = graph.syncRequest(new IndexRoot(doc));
+                    return Pair.make(componentType, root);
+                } else {
+                    Resource root = graph.syncRequest(new IndexRoot(component));
+                    return Pair.make(null, root);
+                }
+            }
+            // TODO: For Antti to consider and fix later
+            // Introduced to handle procedural user components where component == null
+        } else if (literal != null) {
+            Resource root = graph.syncRequest(new IndexRoot(literal));
+            return Pair.make(null, root);
+        } else {
+            throw new DatabaseException("Couldn't resolve component type and root for component == null && literal == null");
+        }
+    }
+
+}