diff -r 88b85470e72c -r f50545b5e2f1 src/share/jaxws_classes/com/sun/xml/internal/rngom/digested/DPattern.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/jaxws_classes/com/sun/xml/internal/rngom/digested/DPattern.java	Tue Mar 06 16:09:35 2012 -0800
@@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 2005, 2010, 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.
+ */
+/*
+ * Copyright (C) 2004-2011
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package com.sun.xml.internal.rngom.digested;
+
+import com.sun.xml.internal.rngom.ast.om.ParsedPattern;
+import com.sun.xml.internal.rngom.parse.Parseable;
+import org.xml.sax.Locator;
+
+/**
+ * Base class of all the patterns.
+ *
+ * @author Kohsuke Kawaguchi (kk@kohsuke.org)
+ */
+public abstract class DPattern implements ParsedPattern {
+    Locator location;
+    DAnnotation annotation;
+
+    /**
+     * Used to chain the child patterns in a doubly-linked list.
+     */
+    DPattern next;
+    DPattern prev;
+
+    /**
+     * Returns where the pattern is defined in the source code.
+     */
+    public Locator getLocation() {
+        return location;
+    }
+
+    /**
+     * Returns the annotation associated with it.
+     *
+     * @return
+     *      may be empty, but never be null.
+     */
+    public DAnnotation getAnnotation() {
+        if(annotation==null)
+            return DAnnotation.EMPTY;
+        return annotation;
+    }
+
+    /**
+     * Returns true if this pattern is nullable.
+     *
+     * A nullable pattern is a pattern that can match the empty sequence.
+     */
+    public abstract boolean isNullable();
+
+    public abstract <V> V accept( DPatternVisitor<V> visitor );
+
+    /**
+     * Creates a {@link Parseable} object that reparses this pattern.
+     */
+    public Parseable createParseable() {
+        return new PatternParseable(this);
+    }
+
+    /**
+     * Returns true if this is {@link DElementPattern}.
+     */
+    public final boolean isElement() {
+        return this instanceof DElementPattern;
+    }
+
+    /**
+     * Returns true if this is {@link DAttributePattern}.
+     */
+    public final boolean isAttribute() {
+        return this instanceof DAttributePattern;
+    }
+}