Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.db.layer0 / src / org / simantics / db / layer0 / request / DefaultInstanceFactoryRequest.java

diff --git a/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/request/DefaultInstanceFactoryRequest.java b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/request/DefaultInstanceFactoryRequest.java
new file mode 100644 (file)
index 0000000..730116e
--- /dev/null
+++ b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/request/DefaultInstanceFactoryRequest.java
@@ -0,0 +1,72 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.db.layer0.request;\r
+\r
+import java.util.HashMap;\r
+import java.util.HashSet;\r
+import java.util.Map;\r
+\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.VirtualGraph;\r
+import org.simantics.db.WriteGraph;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.layer0.adapter.Template;\r
+import org.simantics.db.request.UndoTraits;\r
+import org.simantics.db.request.WriteResult;\r
+import org.simantics.layer0.Layer0;\r
+\r
+public class DefaultInstanceFactoryRequest implements WriteResult<Map<String, Object>> {\r
+       \r
+       Resource type;\r
+       HashMap<String, Object> parameters;\r
+       Resource[] contexts;\r
+       \r
+       public DefaultInstanceFactoryRequest(Resource type, Map<String, Object> parameters,\r
+                       Resource ... contexts) {\r
+               this.parameters = new HashMap<String, Object>(parameters);\r
+               this.contexts = contexts;\r
+               this.type = type;\r
+       }\r
+       \r
+       public Map<String, Object> perform(WriteGraph g) throws DatabaseException {\r
+\r
+       Layer0 b = Layer0.getInstance(g);\r
+               \r
+               // Default instantiation logic\r
+               Resource instance = g.newResource();\r
+               g.claim(instance, b.InstanceOf, null, type);\r
+\r
+               parameters.put("", instance);\r
+\r
+               // Collect templates\r
+               HashSet<Resource> templates = new HashSet<Resource>();\r
+               for(Resource context : contexts)\r
+                       templates.addAll(g.getObjects(instance, context));\r
+\r
+               // Apply templates\r
+               for(Resource template : templates)\r
+                       g.adapt(template, Template.class).apply(g, parameters);\r
+\r
+               return parameters;\r
+               \r
+       }\r
+\r
+       @Override\r
+       public UndoTraits getUndoTraits() {\r
+               return null;\r
+       }\r
+\r
+       @Override\r
+       public VirtualGraph getProvider() {\r
+               return null;\r
+       }\r
+}\r