Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.db.common / src / org / simantics / db / common / primitiverequest / PossibleUniqueAdapter.java

diff --git a/bundles/org.simantics.db.common/src/org/simantics/db/common/primitiverequest/PossibleUniqueAdapter.java b/bundles/org.simantics.db.common/src/org/simantics/db/common/primitiverequest/PossibleUniqueAdapter.java
new file mode 100644 (file)
index 0000000..2330054
--- /dev/null
+++ b/bundles/org.simantics.db.common/src/org/simantics/db/common/primitiverequest/PossibleUniqueAdapter.java
@@ -0,0 +1,63 @@
+/*******************************************************************************\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.primitiverequest;\r
+\r
+import org.simantics.db.AsyncReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.procedure.AsyncProcedure;\r
+import org.simantics.db.request.AsyncRead;\r
+\r
+final public class PossibleUniqueAdapter<T> implements AsyncRead<T> {\r
+\r
+       final private Resource resource;\r
+    final private Class<T> clazz;\r
+    \r
+    @Override\r
+    public int hashCode() {\r
+        return resource.hashCode() + 31 * clazz.hashCode();\r
+    }\r
+    \r
+    @Override\r
+    public boolean equals(Object object) {\r
+        if (this == object)\r
+            return true;\r
+        else if (object == null)\r
+            return false;\r
+        else if (getClass() != object.getClass())\r
+            return false;\r
+        PossibleUniqueAdapter<?> r = (PossibleUniqueAdapter<?>)object;\r
+        return resource.equals(r.resource) && clazz.equals(r.clazz);\r
+    }\r
+\r
+    @Override\r
+    public int threadHash() {\r
+       return hashCode();\r
+    }\r
+\r
+    @Override\r
+    public int getFlags() {\r
+        return 0;\r
+    }\r
+    \r
+    public PossibleUniqueAdapter(Resource resource, Class<T> clazz) {\r
+        this.resource = resource;\r
+        this.clazz = clazz;\r
+    }\r
+\r
+    @Override\r
+    public void perform(AsyncReadGraph graph, AsyncProcedure<T> procedure) {\r
+        \r
+        graph.forPossibleUniqueAdapted(resource, clazz, procedure);\r
+        \r
+    }\r
+\r
+}\r