diff -r 000000000000 -r 373ffda63c9a src/share/jaxws_classes/com/sun/xml/internal/bind/v2/schemagen/Form.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/jaxws_classes/com/sun/xml/internal/bind/v2/schemagen/Form.java	Wed Apr 27 01:27:09 2016 +0800
@@ -0,0 +1,112 @@
+/*
+ * 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.xml.internal.bind.v2.schemagen;
+
+import javax.xml.bind.annotation.XmlNsForm;
+import javax.xml.namespace.QName;
+
+import com.sun.xml.internal.bind.v2.schemagen.xmlschema.LocalAttribute;
+import com.sun.xml.internal.bind.v2.schemagen.xmlschema.LocalElement;
+import com.sun.xml.internal.bind.v2.schemagen.xmlschema.Schema;
+import com.sun.xml.internal.txw2.TypedXmlWriter;
+
+/**
+ * Represents the form default value.
+ *
+ * @author Kohsuke Kawaguchi
+ */
+enum Form {
+    QUALIFIED(XmlNsForm.QUALIFIED,true) {
+        void declare(String attName,Schema schema) {
+            schema._attribute(attName,"qualified");
+        }
+    },
+    UNQUALIFIED(XmlNsForm.UNQUALIFIED,false) {
+        void declare(String attName,Schema schema) {
+            // pointless, but required by the spec.
+            // people need to understand that @attributeFormDefault is a syntax sugar
+            schema._attribute(attName,"unqualified");
+        }
+    },
+    UNSET(XmlNsForm.UNSET,false) {
+        void declare(String attName,Schema schema) {
+        }
+    };
+
+    /**
+     * The same constant defined in the spec.
+     */
+    private final XmlNsForm xnf;
+
+    /**
+     * What's the effective value? UNSET means unqualified per XSD spec.)
+     */
+    public final boolean isEffectivelyQualified;
+
+    Form(XmlNsForm xnf, boolean effectivelyQualified) {
+        this.xnf = xnf;
+        this.isEffectivelyQualified = effectivelyQualified;
+    }
+
+    /**
+     * Writes the attribute on the generated <schema> element.
+     */
+    abstract void declare(String attName, Schema schema);
+
+    /**
+     * Given the effective 'form' value, write (or suppress) the @form attribute
+     * on the generated XML.
+     */
+    public void writeForm(LocalElement e, QName tagName) {
+        _writeForm(e,tagName);
+    }
+
+    public void writeForm(LocalAttribute a, QName tagName) {
+        _writeForm(a,tagName);
+    }
+
+    private void _writeForm(TypedXmlWriter e, QName tagName) {
+        boolean qualified = tagName.getNamespaceURI().length()>0;
+
+        if(qualified && this!=QUALIFIED)
+            e._attribute("form","qualified");
+        else
+        if(!qualified && this==QUALIFIED)
+            e._attribute("form","unqualified");
+    }
+
+    /**
+     * Gets the constant the corresponds to the given {@link XmlNsForm}.
+     */
+    public static Form get(XmlNsForm xnf) {
+        for (Form v : values()) {
+            if(v.xnf==xnf)
+                return v;
+        }
+        throw new IllegalArgumentException();
+    }
+
+}