jaxws/src/java.xml.soap/share/classes/com/sun/xml/internal/messaging/saaj/packaging/mime/internet/UniqueValue.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jaxws/src/java.xml.soap/share/classes/com/sun/xml/internal/messaging/saaj/packaging/mime/internet/UniqueValue.java Sun Aug 17 15:52:15 2014 +0100
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 1997, 2013, 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.
+ */
+
+/*
+ * @(#)UniqueValue.java 1.6 02/03/27
+ */
+
+
+
+package com.sun.xml.internal.messaging.saaj.packaging.mime.internet;
+
+
+/**
+ * This is a utility class that generates unique values. The generated
+ * String contains only US-ASCII characters and hence is safe for use
+ * in RFC822 headers. <p>
+ *
+ * This is a package private class.
+ *
+ * @author John Mani
+ * @author Max Spivak
+ * @author Bill Shannon
+ */
+
+class UniqueValue {
+ /**
+ * A global part number. Access is not synchronized because the
+ * value is only one part of the unique value and so doesn't need
+ * to be accurate.
+ */
+ private static int part = 0;
+
+ /**
+ * Get a unique value for use in a multipart boundary string.
+ *
+ * This implementation generates it by concatenating a global
+ * part number, a newly created object's <code>hashCode()</code>,
+ * and the current time (in milliseconds).
+ */
+ public static String getUniqueBoundaryValue() {
+ StringBuffer s = new StringBuffer();
+
+ // Unique string is ----=_Part_<part>_<hashcode>.<currentTime>
+ s.append("----=_Part_").append(part++).append("_").
+ append(s.hashCode()).append('.').
+ append(System.currentTimeMillis());
+ return s.toString();
+ }
+}