diff -r 88b85470e72c -r f50545b5e2f1 src/share/jaxws_classes/com/sun/tools/internal/xjc/model/CCustomizations.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/jaxws_classes/com/sun/tools/internal/xjc/model/CCustomizations.java	Tue Mar 06 16:09:35 2012 -0800
@@ -0,0 +1,144 @@
+/*
+ * Copyright (c) 1997, 2011, 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 com.sun.tools.internal.xjc.model;
+
+import java.util.ArrayList;
+import java.util.Collection;
+
+import com.sun.tools.internal.xjc.Plugin;
+
+/**
+ * Represents the list of {@link CPluginCustomization}s attached to a JAXB model component.
+ *
+ * <p>
+ * When {@link Plugin}s register the customization namespace URIs through {@link Plugin#getCustomizationURIs()},
+ * XJC will treat those URIs just like XJC's own extension "http://java.sun.com/xml/ns/xjc" and make them
+ * available as DOM nodes through {@link CPluginCustomization}. A {@link Plugin} can then access
+ * this information to change its behavior.
+ *
+ * @author Kohsuke Kawaguchi
+ */
+public final class CCustomizations extends ArrayList<CPluginCustomization> {
+
+    /**
+     * All {@link CCustomizations} used by a {@link Model} form a single linked list
+     * so that we can look for unacknowledged customizations later.
+     *
+     * @see CPluginCustomization#markAsAcknowledged()
+     * @see #setParent(Model,CCustomizable)
+     */
+    /*package*/ CCustomizations next;
+
+    /**
+     * The owner model component that carries these customizations.
+     */
+    private CCustomizable owner;
+
+    public CCustomizations() {
+    }
+
+    public CCustomizations(Collection<? extends CPluginCustomization> cPluginCustomizations) {
+        super(cPluginCustomizations);
+    }
+
+    /*package*/ void setParent(Model model,CCustomizable owner) {
+        if(this.owner!=null)     return;
+
+//        // loop check
+//        for( CCustomizations c = model.customizations; c!=null; c=c.next )
+//            assert c!=this;
+
+        this.next = model.customizations;
+        model.customizations = this;
+        assert owner!=null;
+        this.owner = owner;
+    }
+
+    /**
+     * Gets the model component that carries this customization.
+     *
+     * @return never null.
+     */
+    public CCustomizable getOwner() {
+        assert owner!=null;
+        return owner;
+    }
+
+    /**
+     * Finds the first {@link CPluginCustomization} that belongs to the given namespace URI.
+     * @return null if not found
+     */
+    public CPluginCustomization find( String nsUri ) {
+        for (CPluginCustomization p : this) {
+            if(fixNull(p.element.getNamespaceURI()).equals(nsUri))
+                return p;
+        }
+        return null;
+    }
+
+    /**
+     * Finds the first {@link CPluginCustomization} that belongs to the given namespace URI and the local name.
+     * @return null if not found
+     */
+    public CPluginCustomization find( String nsUri, String localName ) {
+        for (CPluginCustomization p : this) {
+            if(fixNull(p.element.getNamespaceURI()).equals(nsUri)
+            && fixNull(p.element.getLocalName()).equals(localName))
+                return p;
+        }
+        return null;
+    }
+
+    private String fixNull(String s) {
+        if(s==null) return "";
+        else        return s;
+    }
+
+    /**
+     * Convenient singleton instance that represents an empty {@link CCustomizations}.
+     */
+    public static final CCustomizations EMPTY = new CCustomizations();
+
+    /**
+     * Merges two {@link CCustomizations} objects into one.
+     */
+    public static CCustomizations merge(CCustomizations lhs, CCustomizations rhs) {
+        if(lhs==null || lhs.isEmpty())   return rhs;
+        if(rhs==null || rhs.isEmpty())   return lhs;
+
+        CCustomizations r = new CCustomizations(lhs);
+        r.addAll(rhs);
+        return r;
+    }
+
+    public boolean equals(Object o) {
+        return this==o;
+    }
+
+    public int hashCode() {
+        return System.identityHashCode(this);
+    }
+}