Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.objmap2 / src / org / simantics / objmap / graph / rules / domain / RelatedObjectsAccessor.java

diff --git a/bundles/org.simantics.objmap2/src/org/simantics/objmap/graph/rules/domain/RelatedObjectsAccessor.java b/bundles/org.simantics.objmap2/src/org/simantics/objmap/graph/rules/domain/RelatedObjectsAccessor.java
new file mode 100644 (file)
index 0000000..5a9b186
--- /dev/null
+++ b/bundles/org.simantics.objmap2/src/org/simantics/objmap/graph/rules/domain/RelatedObjectsAccessor.java
@@ -0,0 +1,63 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2013 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.objmap.graph.rules.domain;\r
+\r
+import java.util.Collection;\r
+\r
+import org.apache.log4j.Logger;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.WriteGraph;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.objmap.exceptions.MappingException;\r
+\r
+/**\r
+ * Accesses the set of objects attached to the element by the given relation.\r
+ * @author Hannu Niemistö\r
+ */\r
+public class RelatedObjectsAccessor implements IDomainAccessor<Resource,Collection<Resource>> {\r
+\r
+    static Logger LOGGER = Logger.getLogger("org.simantics.objmap");\r
+    \r
+       Resource relation;\r
+       boolean deleteExtraObjects;\r
+\r
+       public RelatedObjectsAccessor(Resource relation, boolean deleteExtraObjects) {\r
+        super();\r
+        this.relation = relation;\r
+        this.deleteExtraObjects = deleteExtraObjects;\r
+    }\r
+\r
+    @Override\r
+       public Collection<Resource> get(ReadGraph g, Resource element) throws MappingException {\r
+               try {\r
+                   LOGGER.info("        RelatedObjectsAccessor.get");\r
+                       return g.getObjects(element, relation);\r
+               } catch (DatabaseException e) {\r
+                       throw new MappingException(e);\r
+               }\r
+       }\r
+       \r
+       @Override\r
+       public boolean set(WriteGraph g, Resource element, Collection<Resource> value)\r
+                       throws MappingException {\r
+               try {\r
+                   LOGGER.info("        RelatedObjectsAccessor.set");\r
+                       return MappingUtils.synchronizeStatements(g, element, relation, \r
+                               value.toArray(new Resource[value.size()]), deleteExtraObjects);\r
+               } catch (DatabaseException e) {\r
+                       throw new MappingException(e);\r
+               }\r
+               \r
+       }\r
+\r
+}\r