Migrated source code from Simantics SVN

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

diff --git a/bundles/org.simantics.db.common/src/org/simantics/db/common/request/PossibleChild.java b/bundles/org.simantics.db.common/src/org/simantics/db/common/request/PossibleChild.java
new file mode 100644 (file)
index 0000000..45dc9a0
--- /dev/null
+++ b/bundles/org.simantics.db.common/src/org/simantics/db/common/request/PossibleChild.java
@@ -0,0 +1,50 @@
+/*******************************************************************************\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 java.util.Map;\r
+\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.common.uri.UnescapedChildMapOfResource;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.request.ReadExt;\r
+import org.simantics.db.request.RequestFlags;\r
+\r
+final public class PossibleChild extends BinaryRead<Resource, String, Resource> implements ReadExt {\r
+\r
+    public PossibleChild(Resource resource, String name) {\r
+        super(resource, name);\r
+    }\r
+\r
+    @Override\r
+    public Resource perform(ReadGraph graph) throws DatabaseException {\r
+       Map<String, Resource> childMap = graph.syncRequest(new UnescapedChildMapOfResource(parameter));\r
+       return childMap.get(parameter2);\r
+    }\r
+    \r
+    @Override\r
+    public String toString() {\r
+       return "PossibleChild " + parameter + " " + parameter2;\r
+    }\r
+\r
+       @Override\r
+       public boolean isImmutable(ReadGraph graph) throws DatabaseException {\r
+               return graph.isImmutable(parameter);\r
+       }\r
+\r
+       @Override\r
+       public int getType() {\r
+               return RequestFlags.IMMEDIATE_UPDATE;\r
+       }\r
+\r
+}\r