--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jaxp/src/share/classes/javax/xml/xpath/XPathVariableResolver.java	Sun Mar 04 11:55:34 2012 -0800
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2003, 2005, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package javax.xml.xpath;
+
+import javax.xml.namespace.QName;
+
+/**
+ * <p><code>XPathVariableResolver</code> provides access to the set of user defined XPath variables.</p>
+ *
+ * <p>The <code>XPathVariableResolver</code> and the XPath evaluator must adhere to a contract that
+ * cannot be directly enforced by the API.  Although variables may be mutable,
+ * that is, an application may wish to evaluate the same XPath expression more
+ * than once with different variable values, in the course of evaluating any
+ * single XPath expression, a variable's value <strong><em>must</em></strong>
+ * not change.</p>
+ *
+ * @author  <a href="mailto:Norman.Walsh@Sun.com">Norman Walsh</a>
+ * @author  <a href="mailto:Jeff.Suttor@Sun.com">Jeff Suttor</a>
+ * @since 1.5
+ */
+public interface XPathVariableResolver {
+  /**
+   * <p>Find a variable in the set of available variables.</p>
+   *
+   * <p>If <code>variableName</code> is <code>null</code>, then a <code>NullPointerException</code> is thrown.</p>
+   *
+   * @param variableName The <code>QName</code> of the variable name.
+   *
+   * @return The variables value, or <code>null</code> if no variable named <code>variableName</code>
+   *   exists.  The value returned must be of a type appropriate for the underlying object model.
+   *
+   * @throws NullPointerException If <code>variableName</code> is <code>null</code>.
+   */
+  public Object resolveVariable(QName variableName);
+}