diff -r 000000000000 -r 373ffda63c9a src/share/jaxws_classes/com/sun/xml/internal/bind/v2/runtime/unmarshaller/InterningXmlVisitor.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/jaxws_classes/com/sun/xml/internal/bind/v2/runtime/unmarshaller/InterningXmlVisitor.java	Wed Apr 27 01:27:09 2016 +0800
@@ -0,0 +1,154 @@
+/*
+ * 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.runtime.unmarshaller;
+
+import javax.xml.namespace.NamespaceContext;
+
+import org.xml.sax.Attributes;
+import org.xml.sax.SAXException;
+
+/**
+ * {@link XmlVisitor} decorator that interns all string tokens.
+ *
+ * @author Kohsuke Kawaguchi
+ */
+public final class InterningXmlVisitor implements XmlVisitor {
+    private final XmlVisitor next;
+
+    private final AttributesImpl attributes = new AttributesImpl();
+
+    public InterningXmlVisitor(XmlVisitor next) {
+        this.next = next;
+    }
+
+    public void startDocument(LocatorEx locator, NamespaceContext nsContext) throws SAXException {
+        next.startDocument(locator,nsContext);
+    }
+
+    public void endDocument() throws SAXException {
+        next.endDocument();
+    }
+
+    public void startElement(TagName tagName ) throws SAXException {
+        attributes.setAttributes(tagName.atts);
+        tagName.atts = attributes;
+        tagName.uri = intern(tagName.uri);
+        tagName.local = intern(tagName.local);
+        next.startElement(tagName);
+    }
+
+    public void endElement(TagName tagName ) throws SAXException {
+        tagName.uri = intern(tagName.uri);
+        tagName.local = intern(tagName.local);
+        next.endElement(tagName);
+    }
+
+    public void startPrefixMapping( String prefix, String nsUri ) throws SAXException {
+        next.startPrefixMapping(intern(prefix),intern(nsUri));
+    }
+
+    public void endPrefixMapping( String prefix ) throws SAXException {
+        next.endPrefixMapping(intern(prefix));
+    }
+
+    public void text( CharSequence pcdata ) throws SAXException {
+        next.text(pcdata);
+    }
+
+    public UnmarshallingContext getContext() {
+        return next.getContext();
+    }
+
+    public TextPredictor getPredictor() {
+        return next.getPredictor();
+    }
+
+    private static class AttributesImpl implements Attributes {
+        private Attributes core;
+
+        void setAttributes(Attributes att) {
+            this.core = att;
+        }
+
+        public int getIndex(String qName) {
+            return core.getIndex(qName);
+        }
+
+        public int getIndex(String uri, String localName) {
+            return core.getIndex(uri, localName);
+        }
+
+        public int getLength() {
+            return core.getLength();
+        }
+
+        public String getLocalName(int index) {
+            return intern(core.getLocalName(index));
+        }
+
+        public String getQName(int index) {
+            return intern(core.getQName(index));
+        }
+
+        public String getType(int index) {
+            return intern(core.getType(index));
+        }
+
+        public String getType(String qName) {
+            return intern(core.getType(qName));
+        }
+
+        public String getType(String uri, String localName) {
+            return intern(core.getType(uri, localName));
+        }
+
+        public String getURI(int index) {
+            return intern(core.getURI(index));
+        }
+
+        //
+        // since values may vary a lot,
+        // we don't (probably shouldn't) intern values.
+        //
+
+        public String getValue(int index) {
+            return core.getValue(index);
+        }
+
+        public String getValue(String qName) {
+            return core.getValue(qName);
+        }
+
+        public String getValue(String uri, String localName) {
+            return core.getValue(uri, localName);
+        }
+    }
+
+    private static String intern(String s) {
+        if(s==null)     return null;
+        else            return s.intern();
+    }
+}