[Mulgara-svn] r1126 - trunk/src/jar/util/java/org/mulgara/util

[pag at mulgara.org]

Author: pag
Date: 2008-08-09 19:02:45 -0700 (Sat, 09 Aug 2008)
New Revision: 1126

Added:
   trunk/src/jar/util/java/org/mulgara/util/Pair.java
Log:
Duplicates the Pair class in the C++ ATL. Just a little more convenient than an array of Object[2]

Added: trunk/src/jar/util/java/org/mulgara/util/Pair.java
===================================================================
--- trunk/src/jar/util/java/org/mulgara/util/Pair.java	                        (rev 0)
+++ trunk/src/jar/util/java/org/mulgara/util/Pair.java	2008-08-10 02:02:45 UTC (rev 1126)
@@ -0,0 +1,44 @@
+/*
+ * The contents of this file are subject to the Open Software License
+ * Version 3.0 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.opensource.org/licenses/osl-3.0.txt
+ *
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ */
+
+package org.mulgara.util;
+
+import java.util.Map;
+
+/**
+ * A pair of elements.
+ *
+ * @created Aug 5, 2008
+ * @author Paul Gearon
+ * @copyright &copy; 2008 <a href="http://www.topazproject.org/">The Topaz Project</a>
+ * @licence <a href="{@docRoot}/../../LICENCE.txt">Open Software License v3.0</a>
+ */
+public class Pair<T1,T2> implements Map.Entry<T1,T2> {
+
+  private T1 first;
+
+  private T2 second;
+
+  public Pair(T1 f, T2 s) { first = f; second = s; }
+
+  public T1 first() { return first; }
+
+  public T2 second() { return second; }
+
+  public T1 getKey() { return first; }
+
+  public T2 getValue() { return second; }
+
+  public T2 setValue(T2 value) { throw new UnsupportedOperationException("Pairs are an immutable type"); }
+
+  public static <C1,C2> Pair<C1,C2> p(C1 c1, C2 c2) { return new Pair<C1,C2>(c1, c2); }
+}