Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.db.indexing / src / org / simantics / db / indexing / ImmutableIndexedRelationsSearcher.java

diff --git a/bundles/org.simantics.db.indexing/src/org/simantics/db/indexing/ImmutableIndexedRelationsSearcher.java b/bundles/org.simantics.db.indexing/src/org/simantics/db/indexing/ImmutableIndexedRelationsSearcher.java
new file mode 100644 (file)
index 0000000..766b5e3
--- /dev/null
+++ b/bundles/org.simantics.db.indexing/src/org/simantics/db/indexing/ImmutableIndexedRelationsSearcher.java
@@ -0,0 +1,39 @@
+/*******************************************************************************\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.indexing;\r
+\r
+import org.eclipse.core.runtime.IProgressMonitor;\r
+import org.simantics.db.RequestProcessor;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.Session;\r
+\r
+/**\r
+ * @author Tuukka Lehtonen\r
+ * @author Antti Villberg\r
+ */\r
+public class ImmutableIndexedRelationsSearcher extends IndexedRelationsSearcherBase {\r
+\r
+       ImmutableIndexedRelationsSearcher(RequestProcessor session, Resource relation, Resource input) {\r
+               super(session, relation, input);\r
+       }\r
+\r
+       @Override\r
+       String getDescriptor() {\r
+               return "IMMU:";\r
+       }\r
+       \r
+    @Override\r
+    Throwable bestEffortClear(IProgressMonitor monitor, Session session) {\r
+       return new IllegalStateException("Immutable index cannot be cleared");\r
+    }\r
+       \r
+}\r