Migrated source code from Simantics SVN

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

diff --git a/bundles/org.simantics.db.common/src/org/simantics/db/common/request/UnaryRead.java b/bundles/org.simantics.db.common/src/org/simantics/db/common/request/UnaryRead.java
new file mode 100644 (file)
index 0000000..f973dc2
--- /dev/null
+++ b/bundles/org.simantics.db.common/src/org/simantics/db/common/request/UnaryRead.java
@@ -0,0 +1,49 @@
+/*******************************************************************************\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
+\r
+\r
+public abstract class UnaryRead<P, R> extends GenericReadBase<P, R> {\r
+\r
+    final protected P parameter;\r
+\r
+    @Override\r
+    public int hashCode() {\r
+        return parameter != null ? parameter.hashCode() : 0;\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
+        UnaryRead<?, ?> r = (UnaryRead<?, ?>) object;\r
+        if(parameter != null) {\r
+            if(!parameter.equals(r.parameter)) return false;\r
+        } else if(r.parameter != null) return false;\r
+        return true;\r
+    }\r
+\r
+    public UnaryRead(P parameter) {\r
+        this.parameter = parameter;\r
+    }\r
+    \r
+    @Override\r
+    public String toString() {\r
+       return getClass().getSimpleName() + "$" + parameter; \r
+    }\r
+    \r
+}\r