Migrated source code from Simantics SVN

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

diff --git a/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/request/ApplyTemplatesRequest.java b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/request/ApplyTemplatesRequest.java
new file mode 100644 (file)
index 0000000..cc1463c
--- /dev/null
+++ b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/request/ApplyTemplatesRequest.java
@@ -0,0 +1,82 @@
+/*******************************************************************************\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.ArrayList;\r
+import java.util.Collection;\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.WriteGraph;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.layer0.adapter.Template;\r
+import org.simantics.operation.Layer0X;\r
+\r
+/**\r
+ * Applies templates to an instance.\r
+ * @author Hannu Niemist�\r
+ */\r
+public class ApplyTemplatesRequest {\r
+       Map<String, Object> parameters;\r
+       Collection<Resource> contexts;\r
+       \r
+       public ApplyTemplatesRequest(Map<String, Object> parameters,\r
+                       Collection<Resource> contexts) {\r
+               this.parameters = parameters;\r
+               this.contexts = contexts;\r
+       }\r
+       \r
+       public ApplyTemplatesRequest(Map<String, Object> parameters) {\r
+               this(parameters, new ArrayList<Resource>(2));\r
+       }\r
+       \r
+       public ApplyTemplatesRequest() {\r
+               this(new HashMap<String, Object>());\r
+       }\r
+\r
+       public void perform(WriteGraph g, Resource resource) throws DatabaseException {\r
+           Layer0X L0X = Layer0X.getInstance(g);\r
+\r
+               parameters.put("", resource);\r
+               \r
+               // Use default context if no other contexts have been defined\r
+               if(contexts.isEmpty())\r
+                       contexts.add(L0X.HasTemplate);\r
+               \r
+               // Collect templates\r
+               HashSet<Resource> templates = new HashSet<Resource>();\r
+               for(Resource context : contexts)\r
+                       templates.addAll(g.getObjects(resource, context));\r
+               \r
+               // Apply templates\r
+               for(Resource template : templates)\r
+                       g.adapt(template, Template.class).apply(g, parameters);\r
+       }\r
+       \r
+       public void addContext(Resource context) {\r
+               contexts.add(context);\r
+       }\r
+       \r
+       public void addParameter(String key, Object value) {\r
+               parameters.put(key, value);\r
+       }\r
+       \r
+       public <T> T getParameter(String key) {\r
+               return (T)parameters.get(key);\r
+       }\r
+       \r
+       public Map<String,Object> getParameters() {\r
+               return parameters;\r
+       }\r
+}\r