Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.db.layer0 / src / org / simantics / db / layer0 / request / VariableRead.java

diff --git a/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/request/VariableRead.java b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/request/VariableRead.java
new file mode 100644 (file)
index 0000000..fc8641b
--- /dev/null
+++ b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/request/VariableRead.java
@@ -0,0 +1,97 @@
+/*******************************************************************************\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.layer0.request;\r
+\r
+import org.simantics.db.AsyncRequestProcessor;\r
+import org.simantics.db.RequestProcessor;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.layer0.variable.Variable;\r
+import org.simantics.db.procedure.AsyncListener;\r
+import org.simantics.db.procedure.AsyncProcedure;\r
+import org.simantics.db.procedure.Listener;\r
+import org.simantics.db.procedure.Procedure;\r
+import org.simantics.db.procedure.SyncListener;\r
+import org.simantics.db.procedure.SyncProcedure;\r
+import org.simantics.db.request.Read;\r
+import org.simantics.db.request.ReadInterface;\r
+\r
+public abstract class VariableRead<T> implements Read<T>, ReadInterface<T> {\r
+\r
+    final protected Variable variable;\r
+\r
+    @Override\r
+    public int hashCode() {\r
+        return variable.hashCode();\r
+    }\r
+    \r
+    protected Class<?> clazz() {\r
+       return getClass();\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 (!clazz().isInstance(object))\r
+            return false;\r
+        VariableRead<?> r = (VariableRead<?>) object;\r
+        return variable.equals(r.variable);\r
+    }\r
+\r
+    public VariableRead(Variable variable) {\r
+       if(variable == null) throw new IllegalArgumentException("Null variable.");\r
+        this.variable = variable;\r
+    }\r
+\r
+    @Override\r
+    public void request(AsyncRequestProcessor processor, AsyncProcedure<T> procedure) {\r
+       processor.asyncRequest(this, procedure);\r
+    }\r
+    \r
+    @Override\r
+    public void request(AsyncRequestProcessor processor, Procedure<T> procedure) {\r
+       processor.asyncRequest(this, procedure);\r
+    }\r
+    \r
+    @Override\r
+    public void request(AsyncRequestProcessor processor, SyncProcedure<T> procedure) {\r
+       processor.asyncRequest(this, procedure);\r
+    }\r
+\r
+    @Override\r
+    public void request(AsyncRequestProcessor processor, AsyncListener<T> procedure) {\r
+       processor.asyncRequest(this, procedure);\r
+    }\r
+    \r
+    @Override\r
+    public void request(AsyncRequestProcessor processor, Listener<T> procedure) {\r
+       processor.asyncRequest(this, procedure);\r
+    }\r
+    \r
+    @Override\r
+    public void request(AsyncRequestProcessor processor, SyncListener<T> procedure) {\r
+       processor.asyncRequest(this, procedure);\r
+    }\r
+    \r
+    @Override\r
+    public T request(RequestProcessor processor) throws DatabaseException {\r
+       return processor.syncRequest(this);\r
+    }\r
+    \r
+    @Override\r
+    public String toString() {\r
+       return getClass().getSimpleName() + "|" + variable; \r
+    }\r
+    \r
+}\r