jaxws/src/java.xml.soap/share/classes/com/sun/xml/internal/messaging/saaj/util/JaxmURI.java
changeset 25871 b80b84e87032
parent 22679 d785acd84a14
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jaxws/src/java.xml.soap/share/classes/com/sun/xml/internal/messaging/saaj/util/JaxmURI.java	Sun Aug 17 15:52:15 2014 +0100
@@ -0,0 +1,1380 @@
+/*
+ * 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.
+ */
+
+package com.sun.xml.internal.messaging.saaj.util;
+
+// Imported from: org.apache.xerces.util
+// Needed to work around differences in JDK1.2 and 1.3 and deal with userInfo
+
+import java.io.IOException;
+import java.io.Serializable;
+
+
+/**********************************************************************
+* A class to represent a Uniform Resource Identifier (URI). This class
+* is designed to handle the parsing of URIs and provide access to
+* the various components (scheme, host, port, userinfo, path, query
+* string and fragment) that may constitute a URI.
+* <p>
+* Parsing of a URI specification is done according to the URI
+* syntax described in RFC 2396
+* <http://www.ietf.org/rfc/rfc2396.txt?number=2396>. Every URI consists
+* of a scheme, followed by a colon (':'), followed by a scheme-specific
+* part. For URIs that follow the "generic URI" syntax, the scheme-
+* specific part begins with two slashes ("//") and may be followed
+* by an authority segment (comprised of user information, host, and
+* port), path segment, query segment and fragment. Note that RFC 2396
+* no longer specifies the use of the parameters segment and excludes
+* the "user:password" syntax as part of the authority segment. If
+* "user:password" appears in a URI, the entire user/password string
+* is stored as userinfo.
+* <p>
+* For URIs that do not follow the "generic URI" syntax (e.g. mailto),
+* the entire scheme-specific part is treated as the "path" portion
+* of the URI.
+* <p>
+* Note that, unlike the java.net.URL class, this class does not provide
+* any built-in network access functionality nor does it provide any
+* scheme-specific functionality (for example, it does not know a
+* default port for a specific scheme). Rather, it only knows the
+* grammar and basic set of operations that can be applied to a URI.
+*
+* @version
+*
+**********************************************************************/
+ public class JaxmURI implements Serializable {
+
+  /*******************************************************************
+  * MalformedURIExceptions are thrown in the process of building a URI
+  * or setting fields on a URI when an operation would result in an
+  * invalid URI specification.
+  *
+  ********************************************************************/
+  public static class MalformedURIException extends IOException {
+
+   /******************************************************************
+    * Constructs a <code>MalformedURIException</code> with no specified
+    * detail message.
+    ******************************************************************/
+    public MalformedURIException() {
+      super();
+    }
+
+    /*****************************************************************
+    * Constructs a <code>MalformedURIException</code> with the
+    * specified detail message.
+    *
+    * @param p_msg the detail message.
+    ******************************************************************/
+    public MalformedURIException(String p_msg) {
+      super(p_msg);
+    }
+  }
+
+  /** reserved characters */
+  private static final String RESERVED_CHARACTERS = ";/?:@&=+$,";
+
+  /** URI punctuation mark characters - these, combined with
+      alphanumerics, constitute the "unreserved" characters */
+  private static final String MARK_CHARACTERS = "-_.!~*'() ";
+
+  /** scheme can be composed of alphanumerics and these characters */
+  private static final String SCHEME_CHARACTERS = "+-.";
+
+  /** userinfo can be composed of unreserved, escaped and these
+      characters */
+  private static final String USERINFO_CHARACTERS = ";:&=+$,";
+
+  /** Stores the scheme (usually the protocol) for this URI. */
+  private String m_scheme = null;
+
+  /** If specified, stores the userinfo for this URI; otherwise null */
+  private String m_userinfo = null;
+
+  /** If specified, stores the host for this URI; otherwise null */
+  private String m_host = null;
+
+  /** If specified, stores the port for this URI; otherwise -1 */
+  private int m_port = -1;
+
+  /** If specified, stores the path for this URI; otherwise null */
+  private String m_path = null;
+
+  /** If specified, stores the query string for this URI; otherwise
+      null.  */
+  private String m_queryString = null;
+
+  /** If specified, stores the fragment for this URI; otherwise null */
+  private String m_fragment = null;
+
+  private static boolean DEBUG = false;
+
+  /**
+  * Construct a new and uninitialized URI.
+  */
+  public JaxmURI() {
+  }
+
+ /**
+  * Construct a new URI from another URI. All fields for this URI are
+  * set equal to the fields of the URI passed in.
+  *
+  * @param p_other the URI to copy (cannot be null)
+  */
+  public JaxmURI(JaxmURI p_other) {
+    initialize(p_other);
+  }
+
+ /**
+  * Construct a new URI from a URI specification string. If the
+  * specification follows the "generic URI" syntax, (two slashes
+  * following the first colon), the specification will be parsed
+  * accordingly - setting the scheme, userinfo, host,port, path, query
+  * string and fragment fields as necessary. If the specification does
+  * not follow the "generic URI" syntax, the specification is parsed
+  * into a scheme and scheme-specific part (stored as the path) only.
+  *
+  * @param p_uriSpec the URI specification string (cannot be null or
+  *                  empty)
+  *
+  * @exception MalformedURIException if p_uriSpec violates any syntax
+  *                                   rules
+  */
+  public JaxmURI(String p_uriSpec) throws MalformedURIException {
+    this((JaxmURI)null, p_uriSpec);
+  }
+
+ /**
+  * Construct a new URI from a base URI and a URI specification string.
+  * The URI specification string may be a relative URI.
+  *
+  * @param p_base the base URI (cannot be null if p_uriSpec is null or
+  *               empty)
+  * @param p_uriSpec the URI specification string (cannot be null or
+  *                  empty if p_base is null)
+  *
+  * @exception MalformedURIException if p_uriSpec violates any syntax
+  *                                  rules
+  */
+  public JaxmURI(JaxmURI p_base, String p_uriSpec) throws MalformedURIException {
+    initialize(p_base, p_uriSpec);
+  }
+
+ /**
+  * Construct a new URI that does not follow the generic URI syntax.
+  * Only the scheme and scheme-specific part (stored as the path) are
+  * initialized.
+  *
+  * @param p_scheme the URI scheme (cannot be null or empty)
+  * @param p_schemeSpecificPart the scheme-specific part (cannot be
+  *                             null or empty)
+  *
+  * @exception MalformedURIException if p_scheme violates any
+  *                                  syntax rules
+  */
+  public JaxmURI(String p_scheme, String p_schemeSpecificPart)
+             throws MalformedURIException {
+    if (p_scheme == null || p_scheme.trim().length() == 0) {
+      throw new MalformedURIException(
+            "Cannot construct URI with null/empty scheme!");
+    }
+    if (p_schemeSpecificPart == null ||
+        p_schemeSpecificPart.trim().length() == 0) {
+      throw new MalformedURIException(
+          "Cannot construct URI with null/empty scheme-specific part!");
+    }
+    setScheme(p_scheme);
+    setPath(p_schemeSpecificPart);
+  }
+
+ /**
+  * Construct a new URI that follows the generic URI syntax from its
+  * component parts. Each component is validated for syntax and some
+  * basic semantic checks are performed as well.  See the individual
+  * setter methods for specifics.
+  *
+  * @param p_scheme the URI scheme (cannot be null or empty)
+  * @param p_host the hostname or IPv4 address for the URI
+  * @param p_path the URI path - if the path contains '?' or '#',
+  *               then the query string and/or fragment will be
+  *               set from the path; however, if the query and
+  *               fragment are specified both in the path and as
+  *               separate parameters, an exception is thrown
+  * @param p_queryString the URI query string (cannot be specified
+  *                      if path is null)
+  * @param p_fragment the URI fragment (cannot be specified if path
+  *                   is null)
+  *
+  * @exception MalformedURIException if any of the parameters violates
+  *                                  syntax rules or semantic rules
+  */
+  public JaxmURI(String p_scheme, String p_host, String p_path,
+             String p_queryString, String p_fragment)
+         throws MalformedURIException {
+    this(p_scheme, null, p_host, -1, p_path, p_queryString, p_fragment);
+  }
+
+ /**
+  * Construct a new URI that follows the generic URI syntax from its
+  * component parts. Each component is validated for syntax and some
+  * basic semantic checks are performed as well.  See the individual
+  * setter methods for specifics.
+  *
+  * @param p_scheme the URI scheme (cannot be null or empty)
+  * @param p_userinfo the URI userinfo (cannot be specified if host
+  *                   is null)
+  * @param p_host the hostname or IPv4 address for the URI
+  * @param p_port the URI port (may be -1 for "unspecified"; cannot
+  *               be specified if host is null)
+  * @param p_path the URI path - if the path contains '?' or '#',
+  *               then the query string and/or fragment will be
+  *               set from the path; however, if the query and
+  *               fragment are specified both in the path and as
+  *               separate parameters, an exception is thrown
+  * @param p_queryString the URI query string (cannot be specified
+  *                      if path is null)
+  * @param p_fragment the URI fragment (cannot be specified if path
+  *                   is null)
+  *
+  * @exception MalformedURIException if any of the parameters violates
+  *                                  syntax rules or semantic rules
+  */
+  public JaxmURI(String p_scheme, String p_userinfo,
+             String p_host, int p_port, String p_path,
+             String p_queryString, String p_fragment)
+         throws MalformedURIException {
+    if (p_scheme == null || p_scheme.trim().length() == 0) {
+      throw new MalformedURIException("Scheme is required!");
+    }
+
+    if (p_host == null) {
+      if (p_userinfo != null) {
+        throw new MalformedURIException(
+             "Userinfo may not be specified if host is not specified!");
+      }
+      if (p_port != -1) {
+        throw new MalformedURIException(
+             "Port may not be specified if host is not specified!");
+      }
+    }
+
+    if (p_path != null) {
+      if (p_path.indexOf('?') != -1 && p_queryString != null) {
+        throw new MalformedURIException(
+          "Query string cannot be specified in path and query string!");
+      }
+
+      if (p_path.indexOf('#') != -1 && p_fragment != null) {
+        throw new MalformedURIException(
+          "Fragment cannot be specified in both the path and fragment!");
+      }
+    }
+
+    setScheme(p_scheme);
+    setHost(p_host);
+    setPort(p_port);
+    setUserinfo(p_userinfo);
+    setPath(p_path);
+    setQueryString(p_queryString);
+    setFragment(p_fragment);
+  }
+
+ /**
+  * Initialize all fields of this URI from another URI.
+  *
+  * @param p_other the URI to copy (cannot be null)
+  */
+  private void initialize(JaxmURI p_other) {
+    m_scheme = p_other.getScheme();
+    m_userinfo = p_other.getUserinfo();
+    m_host = p_other.getHost();
+    m_port = p_other.getPort();
+    m_path = p_other.getPath();
+    m_queryString = p_other.getQueryString();
+    m_fragment = p_other.getFragment();
+  }
+
+ /**
+  * Initializes this URI from a base URI and a URI specification string.
+  * See RFC 2396 Section 4 and Appendix B for specifications on parsing
+  * the URI and Section 5 for specifications on resolving relative URIs
+  * and relative paths.
+  *
+  * @param p_base the base URI (may be null if p_uriSpec is an absolute
+  *               URI)
+  * @param p_uriSpec the URI spec string which may be an absolute or
+  *                  relative URI (can only be null/empty if p_base
+  *                  is not null)
+  *
+  * @exception MalformedURIException if p_base is null and p_uriSpec
+  *                                  is not an absolute URI or if
+  *                                  p_uriSpec violates syntax rules
+  */
+  private void initialize(JaxmURI p_base, String p_uriSpec)
+                         throws MalformedURIException {
+    if (p_base == null &&
+        (p_uriSpec == null || p_uriSpec.trim().length() == 0)) {
+      throw new MalformedURIException(
+                  "Cannot initialize URI with empty parameters.");
+      }
+
+    // just make a copy of the base if spec is empty
+    if (p_uriSpec == null || p_uriSpec.trim().length() == 0) {
+      initialize(p_base);
+      return;
+    }
+
+    String uriSpec = p_uriSpec.trim();
+    int uriSpecLen = uriSpec.length();
+    int index = 0;
+
+    // Check for scheme, which must be before `/'. Also handle names with
+    // DOS drive letters ('D:'), so 1-character schemes are not allowed.
+    int colonIdx = uriSpec.indexOf(':');
+    int slashIdx = uriSpec.indexOf('/');
+    if ((colonIdx < 2) || (colonIdx > slashIdx && slashIdx != -1)) {
+      int fragmentIdx = uriSpec.indexOf('#');
+      // A standalone base is a valid URI according to spec
+      if (p_base == null && fragmentIdx != 0 ) {
+        throw new MalformedURIException("No scheme found in URI.");
+      }
+    }
+    else {
+      initializeScheme(uriSpec);
+      index = m_scheme.length()+1;
+    }
+
+    // two slashes means generic URI syntax, so we get the authority
+    if (((index+1) < uriSpecLen) &&
+        (uriSpec.substring(index).startsWith("//"))) {
+      index += 2;
+      int startPos = index;
+
+      // get authority - everything up to path, query or fragment
+      char testChar = '\0';
+      while (index < uriSpecLen) {
+        testChar = uriSpec.charAt(index);
+        if (testChar == '/' || testChar == '?' || testChar == '#') {
+          break;
+        }
+        index++;
+      }
+
+      // if we found authority, parse it out, otherwise we set the
+      // host to empty string
+      if (index > startPos) {
+        initializeAuthority(uriSpec.substring(startPos, index));
+      }
+      else {
+        m_host = "";
+      }
+    }
+
+    initializePath(uriSpec.substring(index));
+
+    // Resolve relative URI to base URI - see RFC 2396 Section 5.2
+    // In some cases, it might make more sense to throw an exception
+    // (when scheme is specified is the string spec and the base URI
+    // is also specified, for example), but we're just following the
+    // RFC specifications
+    if (p_base != null) {
+
+      // check to see if this is the current doc - RFC 2396 5.2 #2
+      // note that this is slightly different from the RFC spec in that
+      // we don't include the check for query string being null
+      // - this handles cases where the urispec is just a query
+      // string or a fragment (e.g. "?y" or "#s") -
+      // see <http://www.ics.uci.edu/~fielding/url/test1.html> which
+      // identified this as a bug in the RFC
+      if (m_path.length() == 0 && m_scheme == null &&
+          m_host == null) {
+        m_scheme = p_base.getScheme();
+        m_userinfo = p_base.getUserinfo();
+        m_host = p_base.getHost();
+        m_port = p_base.getPort();
+        m_path = p_base.getPath();
+
+        if (m_queryString == null) {
+          m_queryString = p_base.getQueryString();
+        }
+        return;
+      }
+
+      // check for scheme - RFC 2396 5.2 #3
+      // if we found a scheme, it means absolute URI, so we're done
+      if (m_scheme == null) {
+        m_scheme = p_base.getScheme();
+      }
+      else {
+        return;
+      }
+
+      // check for authority - RFC 2396 5.2 #4
+      // if we found a host, then we've got a network path, so we're done
+      if (m_host == null) {
+        m_userinfo = p_base.getUserinfo();
+        m_host = p_base.getHost();
+        m_port = p_base.getPort();
+      }
+      else {
+        return;
+      }
+
+      // check for absolute path - RFC 2396 5.2 #5
+      if (m_path.length() > 0 &&
+          m_path.startsWith("/")) {
+        return;
+      }
+
+      // if we get to this point, we need to resolve relative path
+      // RFC 2396 5.2 #6
+      String path = "";
+      String basePath = p_base.getPath();
+
+      // 6a - get all but the last segment of the base URI path
+      if (basePath != null) {
+        int lastSlash = basePath.lastIndexOf('/');
+        if (lastSlash != -1) {
+          path = basePath.substring(0, lastSlash+1);
+        }
+      }
+
+      // 6b - append the relative URI path
+      path = path.concat(m_path);
+
+      // 6c - remove all "./" where "." is a complete path segment
+      index = -1;
+      while ((index = path.indexOf("/./")) != -1) {
+        path = path.substring(0, index+1).concat(path.substring(index+3));
+      }
+
+      // 6d - remove "." if path ends with "." as a complete path segment
+      if (path.endsWith("/.")) {
+        path = path.substring(0, path.length()-1);
+      }
+
+      // 6e - remove all "<segment>/../" where "<segment>" is a complete
+      // path segment not equal to ".."
+      index = 1;
+      int segIndex = -1;
+      String tempString = null;
+
+      while ((index = path.indexOf("/../", index)) > 0) {
+        tempString = path.substring(0, path.indexOf("/../"));
+        segIndex = tempString.lastIndexOf('/');
+        if (segIndex != -1) {
+          if (!tempString.substring(segIndex++).equals("..")) {
+            path = path.substring(0, segIndex).concat(path.substring(index+4));
+          }
+          else
+            index += 4;
+        }
+        else
+          index += 4;
+      }
+
+      // 6f - remove ending "<segment>/.." where "<segment>" is a
+      // complete path segment
+      if (path.endsWith("/..")) {
+        tempString = path.substring(0, path.length()-3);
+        segIndex = tempString.lastIndexOf('/');
+        if (segIndex != -1) {
+          path = path.substring(0, segIndex+1);
+        }
+      }
+      m_path = path;
+    }
+  }
+
+ /**
+  * Initialize the scheme for this URI from a URI string spec.
+  *
+  * @param p_uriSpec the URI specification (cannot be null)
+  *
+  * @exception MalformedURIException if URI does not have a conformant
+  *                                  scheme
+  */
+  private void initializeScheme(String p_uriSpec)
+                 throws MalformedURIException {
+    int uriSpecLen = p_uriSpec.length();
+    int index = 0;
+    String scheme = null;
+    char testChar = '\0';
+
+    while (index < uriSpecLen) {
+      testChar = p_uriSpec.charAt(index);
+      if (testChar == ':' || testChar == '/' ||
+          testChar == '?' || testChar == '#') {
+        break;
+      }
+      index++;
+    }
+    scheme = p_uriSpec.substring(0, index);
+
+    if (scheme.length() == 0) {
+      throw new MalformedURIException("No scheme found in URI.");
+    }
+    else {
+      setScheme(scheme);
+    }
+  }
+
+ /**
+  * Initialize the authority (userinfo, host and port) for this
+  * URI from a URI string spec.
+  *
+  * @param p_uriSpec the URI specification (cannot be null)
+  *
+  * @exception MalformedURIException if p_uriSpec violates syntax rules
+  */
+  private void initializeAuthority(String p_uriSpec)
+                 throws MalformedURIException {
+    int index = 0;
+    int start = 0;
+    int end = p_uriSpec.length();
+    char testChar = '\0';
+    String userinfo = null;
+
+    // userinfo is everything up @
+    if (p_uriSpec.indexOf('@', start) != -1) {
+      while (index < end) {
+        testChar = p_uriSpec.charAt(index);
+        if (testChar == '@') {
+          break;
+        }
+        index++;
+      }
+      userinfo = p_uriSpec.substring(start, index);
+      index++;
+    }
+
+    // host is everything up to ':'
+    String host = null;
+    start = index;
+    while (index < end) {
+      testChar = p_uriSpec.charAt(index);
+      if (testChar == ':') {
+        break;
+      }
+      index++;
+    }
+    host = p_uriSpec.substring(start, index);
+    int port = -1;
+    if (host.length() > 0) {
+      // port
+      if (testChar == ':') {
+        index++;
+        start = index;
+        while (index < end) {
+          index++;
+        }
+        String portStr = p_uriSpec.substring(start, index);
+        if (portStr.length() > 0) {
+          for (int i = 0; i < portStr.length(); i++) {
+            if (!isDigit(portStr.charAt(i))) {
+              throw new MalformedURIException(
+                   portStr +
+                   " is invalid. Port should only contain digits!");
+            }
+          }
+          try {
+            port = Integer.parseInt(portStr);
+          }
+          catch (NumberFormatException nfe) {
+            // can't happen
+          }
+        }
+      }
+    }
+    setHost(host);
+    setPort(port);
+    setUserinfo(userinfo);
+  }
+
+ /**
+  * Initialize the path for this URI from a URI string spec.
+  *
+  * @param p_uriSpec the URI specification (cannot be null)
+  *
+  * @exception MalformedURIException if p_uriSpec violates syntax rules
+  */
+  private void initializePath(String p_uriSpec)
+                 throws MalformedURIException {
+    if (p_uriSpec == null) {
+      throw new MalformedURIException(
+                "Cannot initialize path from null string!");
+    }
+
+    int index = 0;
+    int start = 0;
+    int end = p_uriSpec.length();
+    char testChar = '\0';
+
+    // path - everything up to query string or fragment
+    while (index < end) {
+      testChar = p_uriSpec.charAt(index);
+      if (testChar == '?' || testChar == '#') {
+        break;
+      }
+      // check for valid escape sequence
+      if (testChar == '%') {
+         if (index+2 >= end ||
+            !isHex(p_uriSpec.charAt(index+1)) ||
+            !isHex(p_uriSpec.charAt(index+2))) {
+          throw new MalformedURIException(
+                "Path contains invalid escape sequence!");
+         }
+      }
+      else if (!isReservedCharacter(testChar) &&
+               !isUnreservedCharacter(testChar)) {
+        throw new MalformedURIException(
+                  "Path contains invalid character: " + testChar);
+      }
+      index++;
+    }
+    m_path = p_uriSpec.substring(start, index);
+
+    // query - starts with ? and up to fragment or end
+    if (testChar == '?') {
+      index++;
+      start = index;
+      while (index < end) {
+        testChar = p_uriSpec.charAt(index);
+        if (testChar == '#') {
+          break;
+        }
+        if (testChar == '%') {
+           if (index+2 >= end ||
+              !isHex(p_uriSpec.charAt(index+1)) ||
+              !isHex(p_uriSpec.charAt(index+2))) {
+            throw new MalformedURIException(
+                    "Query string contains invalid escape sequence!");
+           }
+        }
+        else if (!isReservedCharacter(testChar) &&
+                 !isUnreservedCharacter(testChar)) {
+          throw new MalformedURIException(
+                "Query string contains invalid character:" + testChar);
+        }
+        index++;
+      }
+      m_queryString = p_uriSpec.substring(start, index);
+    }
+
+    // fragment - starts with #
+    if (testChar == '#') {
+      index++;
+      start = index;
+      while (index < end) {
+        testChar = p_uriSpec.charAt(index);
+
+        if (testChar == '%') {
+           if (index+2 >= end ||
+              !isHex(p_uriSpec.charAt(index+1)) ||
+              !isHex(p_uriSpec.charAt(index+2))) {
+            throw new MalformedURIException(
+                    "Fragment contains invalid escape sequence!");
+           }
+        }
+        else if (!isReservedCharacter(testChar) &&
+                 !isUnreservedCharacter(testChar)) {
+          throw new MalformedURIException(
+                "Fragment contains invalid character:"+testChar);
+        }
+        index++;
+      }
+      m_fragment = p_uriSpec.substring(start, index);
+    }
+  }
+
+ /**
+  * Get the scheme for this URI.
+  *
+  * @return the scheme for this URI
+  */
+  public String getScheme() {
+    return m_scheme;
+  }
+
+ /**
+  * Get the scheme-specific part for this URI (everything following the
+  * scheme and the first colon). See RFC 2396 Section 5.2 for spec.
+  *
+  * @return the scheme-specific part for this URI
+  */
+  public String getSchemeSpecificPart() {
+    StringBuffer schemespec = new StringBuffer();
+
+    if (m_userinfo != null || m_host != null || m_port != -1) {
+      schemespec.append("//");
+    }
+
+    if (m_userinfo != null) {
+      schemespec.append(m_userinfo);
+      schemespec.append('@');
+    }
+
+    if (m_host != null) {
+      schemespec.append(m_host);
+    }
+
+    if (m_port != -1) {
+      schemespec.append(':');
+      schemespec.append(m_port);
+    }
+
+    if (m_path != null) {
+      schemespec.append((m_path));
+    }
+
+    if (m_queryString != null) {
+      schemespec.append('?');
+      schemespec.append(m_queryString);
+    }
+
+    if (m_fragment != null) {
+      schemespec.append('#');
+      schemespec.append(m_fragment);
+    }
+
+    return schemespec.toString();
+  }
+
+ /**
+  * Get the userinfo for this URI.
+  *
+  * @return the userinfo for this URI (null if not specified).
+  */
+  public String getUserinfo() {
+    return m_userinfo;
+  }
+
+  /**
+  * Get the host for this URI.
+  *
+  * @return the host for this URI (null if not specified).
+  */
+  public String getHost() {
+    return m_host;
+  }
+
+ /**
+  * Get the port for this URI.
+  *
+  * @return the port for this URI (-1 if not specified).
+  */
+  public int getPort() {
+    return m_port;
+  }
+
+ /**
+  * Get the path for this URI (optionally with the query string and
+  * fragment).
+  *
+  * @param p_includeQueryString if true (and query string is not null),
+  *                             then a "?" followed by the query string
+  *                             will be appended
+  * @param p_includeFragment if true (and fragment is not null),
+  *                             then a "#" followed by the fragment
+  *                             will be appended
+  *
+  * @return the path for this URI possibly including the query string
+  *         and fragment
+  */
+  public String getPath(boolean p_includeQueryString,
+                        boolean p_includeFragment) {
+    StringBuffer pathString = new StringBuffer(m_path);
+
+    if (p_includeQueryString && m_queryString != null) {
+      pathString.append('?');
+      pathString.append(m_queryString);
+    }
+
+    if (p_includeFragment && m_fragment != null) {
+      pathString.append('#');
+      pathString.append(m_fragment);
+    }
+    return pathString.toString();
+  }
+
+ /**
+  * Get the path for this URI. Note that the value returned is the path
+  * only and does not include the query string or fragment.
+  *
+  * @return the path for this URI.
+  */
+  public String getPath() {
+    return m_path;
+  }
+
+ /**
+  * Get the query string for this URI.
+  *
+  * @return the query string for this URI. Null is returned if there
+  *         was no "?" in the URI spec, empty string if there was a
+  *         "?" but no query string following it.
+  */
+  public String getQueryString() {
+    return m_queryString;
+  }
+
+ /**
+  * Get the fragment for this URI.
+  *
+  * @return the fragment for this URI. Null is returned if there
+  *         was no "#" in the URI spec, empty string if there was a
+  *         "#" but no fragment following it.
+  */
+  public String getFragment() {
+    return m_fragment;
+  }
+
+ /**
+  * Set the scheme for this URI. The scheme is converted to lowercase
+  * before it is set.
+  *
+  * @param p_scheme the scheme for this URI (cannot be null)
+  *
+  * @exception MalformedURIException if p_scheme is not a conformant
+  *                                  scheme name
+  */
+  public void setScheme(String p_scheme) throws MalformedURIException {
+    if (p_scheme == null) {
+      throw new MalformedURIException(
+                "Cannot set scheme from null string!");
+    }
+    if (!isConformantSchemeName(p_scheme)) {
+      throw new MalformedURIException("The scheme is not conformant.");
+    }
+
+    m_scheme = p_scheme.toLowerCase();
+  }
+
+ /**
+  * Set the userinfo for this URI. If a non-null value is passed in and
+  * the host value is null, then an exception is thrown.
+  *
+  * @param p_userinfo the userinfo for this URI
+  *
+  * @exception MalformedURIException if p_userinfo contains invalid
+  *                                  characters
+  */
+  public void setUserinfo(String p_userinfo) throws MalformedURIException {
+    if (p_userinfo == null) {
+      m_userinfo = null;
+    }
+    else {
+      if (m_host == null) {
+        throw new MalformedURIException(
+                     "Userinfo cannot be set when host is null!");
+      }
+
+      // userinfo can contain alphanumerics, mark characters, escaped
+      // and ';',':','&','=','+','$',','
+      int index = 0;
+      int end = p_userinfo.length();
+      char testChar = '\0';
+      while (index < end) {
+        testChar = p_userinfo.charAt(index);
+        if (testChar == '%') {
+          if (index+2 >= end ||
+              !isHex(p_userinfo.charAt(index+1)) ||
+              !isHex(p_userinfo.charAt(index+2))) {
+            throw new MalformedURIException(
+                  "Userinfo contains invalid escape sequence!");
+          }
+        }
+        else if (!isUnreservedCharacter(testChar) &&
+                 USERINFO_CHARACTERS.indexOf(testChar) == -1) {
+          throw new MalformedURIException(
+                  "Userinfo contains invalid character:"+testChar);
+        }
+        index++;
+      }
+    }
+    m_userinfo = p_userinfo;
+  }
+
+  /**
+  * Set the host for this URI. If null is passed in, the userinfo
+  * field is also set to null and the port is set to -1.
+  *
+  * @param p_host the host for this URI
+  *
+  * @exception MalformedURIException if p_host is not a valid IP
+  *                                  address or DNS hostname.
+  */
+  public void setHost(String p_host) throws MalformedURIException {
+    if (p_host == null || p_host.trim().length() == 0) {
+      m_host = p_host;
+      m_userinfo = null;
+      m_port = -1;
+    }
+    else if (!isWellFormedAddress(p_host)) {
+      throw new MalformedURIException("Host is not a well formed address!");
+    }
+    m_host = p_host;
+  }
+
+ /**
+  * Set the port for this URI. -1 is used to indicate that the port is
+  * not specified, otherwise valid port numbers are  between 0 and 65535.
+  * If a valid port number is passed in and the host field is null,
+  * an exception is thrown.
+  *
+  * @param p_port the port number for this URI
+  *
+  * @exception MalformedURIException if p_port is not -1 and not a
+  *                                  valid port number
+  */
+  public void setPort(int p_port) throws MalformedURIException {
+    if (p_port >= 0 && p_port <= 65535) {
+      if (m_host == null) {
+        throw new MalformedURIException(
+                      "Port cannot be set when host is null!");
+      }
+    }
+    else if (p_port != -1) {
+      throw new MalformedURIException("Invalid port number!");
+    }
+    m_port = p_port;
+  }
+
+ /**
+  * Set the path for this URI. If the supplied path is null, then the
+  * query string and fragment are set to null as well. If the supplied
+  * path includes a query string and/or fragment, these fields will be
+  * parsed and set as well. Note that, for URIs following the "generic
+  * URI" syntax, the path specified should start with a slash.
+  * For URIs that do not follow the generic URI syntax, this method
+  * sets the scheme-specific part.
+  *
+  * @param p_path the path for this URI (may be null)
+  *
+  * @exception MalformedURIException if p_path contains invalid
+  *                                  characters
+  */
+  public void setPath(String p_path) throws MalformedURIException {
+    if (p_path == null) {
+      m_path = null;
+      m_queryString = null;
+      m_fragment = null;
+    }
+    else {
+      initializePath(p_path);
+    }
+  }
+
+ /**
+  * Append to the end of the path of this URI. If the current path does
+  * not end in a slash and the path to be appended does not begin with
+  * a slash, a slash will be appended to the current path before the
+  * new segment is added. Also, if the current path ends in a slash
+  * and the new segment begins with a slash, the extra slash will be
+  * removed before the new segment is appended.
+  *
+  * @param p_addToPath the new segment to be added to the current path
+  *
+  * @exception MalformedURIException if p_addToPath contains syntax
+  *                                  errors
+  */
+  public void appendPath(String p_addToPath)
+                         throws MalformedURIException {
+    if (p_addToPath == null || p_addToPath.trim().length() == 0) {
+      return;
+    }
+
+    if (!isURIString(p_addToPath)) {
+      throw new MalformedURIException(
+              "Path contains invalid character!");
+    }
+
+    if (m_path == null || m_path.trim().length() == 0) {
+      if (p_addToPath.startsWith("/")) {
+        m_path = p_addToPath;
+      }
+      else {
+        m_path = "/" + p_addToPath;
+      }
+    }
+    else if (m_path.endsWith("/")) {
+      if (p_addToPath.startsWith("/")) {
+        m_path = m_path.concat(p_addToPath.substring(1));
+      }
+      else {
+        m_path = m_path.concat(p_addToPath);
+      }
+    }
+    else {
+      if (p_addToPath.startsWith("/")) {
+        m_path = m_path.concat(p_addToPath);
+      }
+      else {
+        m_path = m_path.concat("/" + p_addToPath);
+      }
+    }
+  }
+
+ /**
+  * Set the query string for this URI. A non-null value is valid only
+  * if this is an URI conforming to the generic URI syntax and
+  * the path value is not null.
+  *
+  * @param p_queryString the query string for this URI
+  *
+  * @exception MalformedURIException if p_queryString is not null and this
+  *                                  URI does not conform to the generic
+  *                                  URI syntax or if the path is null
+  */
+  public void setQueryString(String p_queryString) throws MalformedURIException {
+    if (p_queryString == null) {
+      m_queryString = null;
+    }
+    else if (!isGenericURI()) {
+      throw new MalformedURIException(
+              "Query string can only be set for a generic URI!");
+    }
+    else if (getPath() == null) {
+      throw new MalformedURIException(
+              "Query string cannot be set when path is null!");
+    }
+    else if (!isURIString(p_queryString)) {
+      throw new MalformedURIException(
+              "Query string contains invalid character!");
+    }
+    else {
+      m_queryString = p_queryString;
+    }
+  }
+
+ /**
+  * Set the fragment for this URI. A non-null value is valid only
+  * if this is a URI conforming to the generic URI syntax and
+  * the path value is not null.
+  *
+  * @param p_fragment the fragment for this URI
+  *
+  * @exception MalformedURIException if p_fragment is not null and this
+  *                                  URI does not conform to the generic
+  *                                  URI syntax or if the path is null
+  */
+  public void setFragment(String p_fragment) throws MalformedURIException {
+    if (p_fragment == null) {
+      m_fragment = null;
+    }
+    else if (!isGenericURI()) {
+      throw new MalformedURIException(
+         "Fragment can only be set for a generic URI!");
+    }
+    else if (getPath() == null) {
+      throw new MalformedURIException(
+              "Fragment cannot be set when path is null!");
+    }
+    else if (!isURIString(p_fragment)) {
+      throw new MalformedURIException(
+              "Fragment contains invalid character!");
+    }
+    else {
+      m_fragment = p_fragment;
+    }
+  }
+
+ /**
+  * Determines if the passed-in Object is equivalent to this URI.
+  *
+  * @param p_test the Object to test for equality.
+  *
+  * @return true if p_test is a URI with all values equal to this
+  *         URI, false otherwise
+  */
+  public boolean equals(Object p_test) {
+    if (p_test instanceof JaxmURI) {
+      JaxmURI testURI = (JaxmURI) p_test;
+      if (((m_scheme == null && testURI.m_scheme == null) ||
+           (m_scheme != null && testURI.m_scheme != null &&
+            m_scheme.equals(testURI.m_scheme))) &&
+          ((m_userinfo == null && testURI.m_userinfo == null) ||
+           (m_userinfo != null && testURI.m_userinfo != null &&
+            m_userinfo.equals(testURI.m_userinfo))) &&
+          ((m_host == null && testURI.m_host == null) ||
+           (m_host != null && testURI.m_host != null &&
+            m_host.equals(testURI.m_host))) &&
+            m_port == testURI.m_port &&
+          ((m_path == null && testURI.m_path == null) ||
+           (m_path != null && testURI.m_path != null &&
+            m_path.equals(testURI.m_path))) &&
+          ((m_queryString == null && testURI.m_queryString == null) ||
+           (m_queryString != null && testURI.m_queryString != null &&
+            m_queryString.equals(testURI.m_queryString))) &&
+          ((m_fragment == null && testURI.m_fragment == null) ||
+           (m_fragment != null && testURI.m_fragment != null &&
+            m_fragment.equals(testURI.m_fragment)))) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  public int hashCode() {
+          // No members safe to use, just default to a constant.
+          return 153214;
+  }
+
+ /**
+  * Get the URI as a string specification. See RFC 2396 Section 5.2.
+  *
+  * @return the URI string specification
+  */
+  public String toString() {
+    StringBuffer uriSpecString = new StringBuffer();
+
+    if (m_scheme != null) {
+      uriSpecString.append(m_scheme);
+      uriSpecString.append(':');
+    }
+    uriSpecString.append(getSchemeSpecificPart());
+    return uriSpecString.toString();
+  }
+
+ /**
+  * Get the indicator as to whether this URI uses the "generic URI"
+  * syntax.
+  *
+  * @return true if this URI uses the "generic URI" syntax, false
+  *         otherwise
+  */
+  public boolean isGenericURI() {
+    // presence of the host (whether valid or empty) means
+    // double-slashes which means generic uri
+    return (m_host != null);
+  }
+
+ /**
+  * Determine whether a scheme conforms to the rules for a scheme name.
+  * A scheme is conformant if it starts with an alphanumeric, and
+  * contains only alphanumerics, '+','-' and '.'.
+  *
+  * @return true if the scheme is conformant, false otherwise
+  */
+  public static boolean isConformantSchemeName(String p_scheme) {
+    if (p_scheme == null || p_scheme.trim().length() == 0) {
+      return false;
+    }
+
+    if (!isAlpha(p_scheme.charAt(0))) {
+      return false;
+    }
+
+    char testChar;
+    for (int i = 1; i < p_scheme.length(); i++) {
+      testChar = p_scheme.charAt(i);
+      if (!isAlphanum(testChar) &&
+          SCHEME_CHARACTERS.indexOf(testChar) == -1) {
+        return false;
+      }
+    }
+
+    return true;
+  }
+
+ /**
+  * Determine whether a string is syntactically capable of representing
+  * a valid IPv4 address or the domain name of a network host. A valid
+  * IPv4 address consists of four decimal digit groups separated by a
+  * '.'. A hostname consists of domain labels (each of which must
+  * begin and end with an alphanumeric but may contain '-') separated
+  & by a '.'. See RFC 2396 Section 3.2.2.
+  *
+  * @return true if the string is a syntactically valid IPv4 address
+  *              or hostname
+  */
+  public static boolean isWellFormedAddress(String p_address) {
+    if (p_address == null) {
+      return false;
+    }
+
+    String address = p_address.trim();
+    int addrLength = address.length();
+    if (addrLength == 0 || addrLength > 255) {
+      return false;
+    }
+
+    if (address.startsWith(".") || address.startsWith("-")) {
+      return false;
+    }
+
+    // rightmost domain label starting with digit indicates IP address
+    // since top level domain label can only start with an alpha
+    // see RFC 2396 Section 3.2.2
+    int index = address.lastIndexOf('.');
+    if (address.endsWith(".")) {
+      index = address.substring(0, index).lastIndexOf('.');
+    }
+
+    if (index+1 < addrLength && isDigit(p_address.charAt(index+1))) {
+      char testChar;
+      int numDots = 0;
+
+      // make sure that 1) we see only digits and dot separators, 2) that
+      // any dot separator is preceded and followed by a digit and
+      // 3) that we find 3 dots
+      for (int i = 0; i < addrLength; i++) {
+        testChar = address.charAt(i);
+        if (testChar == '.') {
+          if (!isDigit(address.charAt(i-1)) ||
+              (i+1 < addrLength && !isDigit(address.charAt(i+1)))) {
+            return false;
+          }
+          numDots++;
+        }
+        else if (!isDigit(testChar)) {
+          return false;
+        }
+      }
+      if (numDots != 3) {
+        return false;
+      }
+    }
+    else {
+      // domain labels can contain alphanumerics and '-"
+      // but must start and end with an alphanumeric
+      char testChar;
+
+      for (int i = 0; i < addrLength; i++) {
+        testChar = address.charAt(i);
+        if (testChar == '.') {
+          if (!isAlphanum(address.charAt(i-1))) {
+            return false;
+          }
+          if (i+1 < addrLength && !isAlphanum(address.charAt(i+1))) {
+            return false;
+          }
+        }
+        else if (!isAlphanum(testChar) && testChar != '-') {
+          return false;
+        }
+      }
+    }
+    return true;
+  }
+
+
+ /**
+  * Determine whether a char is a digit.
+  *
+  * @return true if the char is betweeen '0' and '9', false otherwise
+  */
+  private static boolean isDigit(char p_char) {
+    return p_char >= '0' && p_char <= '9';
+  }
+
+ /**
+  * Determine whether a character is a hexadecimal character.
+  *
+  * @return true if the char is betweeen '0' and '9', 'a' and 'f'
+  *         or 'A' and 'F', false otherwise
+  */
+  private static boolean isHex(char p_char) {
+    return (isDigit(p_char) ||
+            (p_char >= 'a' && p_char <= 'f') ||
+            (p_char >= 'A' && p_char <= 'F'));
+  }
+
+ /**
+  * Determine whether a char is an alphabetic character: a-z or A-Z
+  *
+  * @return true if the char is alphabetic, false otherwise
+  */
+  private static boolean isAlpha(char p_char) {
+    return ((p_char >= 'a' && p_char <= 'z') ||
+            (p_char >= 'A' && p_char <= 'Z' ));
+  }
+
+ /**
+  * Determine whether a char is an alphanumeric: 0-9, a-z or A-Z
+  *
+  * @return true if the char is alphanumeric, false otherwise
+  */
+  private static boolean isAlphanum(char p_char) {
+    return (isAlpha(p_char) || isDigit(p_char));
+  }
+
+ /**
+  * Determine whether a character is a reserved character:
+  * ';', '/', '?', ':', '@', '&', '=', '+', '$' or ','
+  *
+  * @return true if the string contains any reserved characters
+  */
+  private static boolean isReservedCharacter(char p_char) {
+    return RESERVED_CHARACTERS.indexOf(p_char) != -1;
+  }
+
+ /**
+  * Determine whether a char is an unreserved character.
+  *
+  * @return true if the char is unreserved, false otherwise
+  */
+  private static boolean isUnreservedCharacter(char p_char) {
+    return (isAlphanum(p_char) ||
+            MARK_CHARACTERS.indexOf(p_char) != -1);
+  }
+
+ /**
+  * Determine whether a given string contains only URI characters (also
+  * called "uric" in RFC 2396). uric consist of all reserved
+  * characters, unreserved characters and escaped characters.
+  *
+  * @return true if the string is comprised of uric, false otherwise
+  */
+  private static boolean isURIString(String p_uric) {
+    if (p_uric == null) {
+      return false;
+    }
+    int end = p_uric.length();
+    char testChar = '\0';
+    for (int i = 0; i < end; i++) {
+      testChar = p_uric.charAt(i);
+      if (testChar == '%') {
+        if (i+2 >= end ||
+            !isHex(p_uric.charAt(i+1)) ||
+            !isHex(p_uric.charAt(i+2))) {
+          return false;
+        }
+        else {
+          i += 2;
+          continue;
+        }
+      }
+      if (isReservedCharacter(testChar) ||
+          isUnreservedCharacter(testChar)) {
+          continue;
+      }
+      else {
+        return false;
+      }
+    }
+    return true;
+  }
+}