Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.db.common / src / org / simantics / db / common / request / TypedParent.java

diff --git a/bundles/org.simantics.db.common/src/org/simantics/db/common/request/TypedParent.java b/bundles/org.simantics.db.common/src/org/simantics/db/common/request/TypedParent.java
new file mode 100644 (file)
index 0000000..adab5ea
--- /dev/null
+++ b/bundles/org.simantics.db.common/src/org/simantics/db/common/request/TypedParent.java
@@ -0,0 +1,69 @@
+/*******************************************************************************\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.common.request;\r
+\r
+import org.simantics.db.AsyncReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.procedure.AsyncProcedure;\r
+import org.simantics.layer0.Layer0;\r
+\r
+public class TypedParent extends ResourceAsyncRead2<Resource> {\r
+\r
+       public TypedParent(Resource resource, Resource type) {\r
+               super(resource, type);\r
+       }\r
+\r
+       @Override\r
+       public void perform(AsyncReadGraph graph, final AsyncProcedure<Resource> procedure) {\r
+\r
+           final Layer0 l0 = graph.getService(Layer0.class);\r
+\r
+               graph.forIsInstanceOf(resource, resource2, new AsyncProcedure<Boolean>() {\r
+\r
+                       @Override\r
+                       public void execute(AsyncReadGraph graph, Boolean isInstance) {\r
+                               if(isInstance) {\r
+                                       procedure.execute(graph, resource);\r
+                               } else {\r
+                                       graph.forPossibleObject(resource, l0.PartOf, new AsyncProcedure<Resource>() {\r
+\r
+                                               @Override\r
+                                               public void execute(AsyncReadGraph graph, final Resource parent) {\r
+\r
+                                                       if(parent == null) {\r
+                                                               procedure.exception(graph, new DatabaseException("Typed parent was not found."));\r
+                                                       } else {\r
+                                                               graph.asyncRequest(new TypedParent(parent, resource2), procedure);\r
+                                                       }\r
+                                                       \r
+                                               }\r
+\r
+                                               @Override\r
+                                               public void exception(AsyncReadGraph graph, Throwable throwable) {\r
+                                                       procedure.exception(graph, throwable);\r
+                                               }\r
+                                               \r
+                                       });\r
+                               }\r
+                       }\r
+\r
+                       @Override\r
+                       public void exception(AsyncReadGraph graph, Throwable throwable) {\r
+                               procedure.exception(graph, throwable);\r
+                       }\r
+               });\r
+               \r
+               \r
+       }\r
+\r
+}\r