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    1   /*
    2    * Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
    3    *
    4    * This software is open source.
    5    * See the bottom of this file for the licence.
    6    */
    7
    8   package org.dom4j.util;
    9
    10  import org.dom4j.Attribute;
    11  import org.dom4j.DocumentFactory;
    12  import org.dom4j.Element;
    13  import org.dom4j.QName;
    14
    15  /***
    16   * <p>
    17   * <code>UserDataDocumentFactory</code> is a factory of XML objects which
    18   * support the adornment of a user data object on an Element or Attribute
    19   * instance such that the methods <code>getData()</code> and
    20   * <code>setData()</code> will get and set the values of a user data object.
    21   * This can be useful for developers wishing to create XML trees and adorn the
    22   * trees with user defined objects.
    23   * </p>
    24   *
    25   * @author <a href="mailto:jstrachan@apache.org">James Strachan </a>
    26   * @version $Revision: 1.11 $
    27   */
    28  public class UserDataDocumentFactory extends DocumentFactory {
    29      /*** The Singleton instance */
    30      protected static transient UserDataDocumentFactory singleton
    31              = new UserDataDocumentFactory();
    32
    33      /***
    34       * <p>
    35       * Access to the singleton instance of this factory.
    36       * </p>
    37       *
    38       * @return the default singleon instance
    39       */
    40      public static DocumentFactory getInstance() {
    41          return singleton;
    42      }
    43
    44      // DocumentFactory methods
    45      // -------------------------------------------------------------------------
    46      public Element createElement(QName qname) {
    47          return new UserDataElement(qname);
    48      }
    49
    50      public Attribute createAttribute(Element owner, QName qname, String value) {
    51          return new UserDataAttribute(qname, value);
    52      }
    53  }
    54
    55  /*
    56   * Redistribution and use of this software and associated documentation
    57   * ("Software"), with or without modification, are permitted provided that the
    58   * following conditions are met:
    59   *
    60   * 1. Redistributions of source code must retain copyright statements and
    61   * notices. Redistributions must also contain a copy of this document.
    62   *
    63   * 2. Redistributions in binary form must reproduce the above copyright notice,
    64   * this list of conditions and the following disclaimer in the documentation
    65   * and/or other materials provided with the distribution.
    66   *
    67   * 3. The name "DOM4J" must not be used to endorse or promote products derived
    68   * from this Software without prior written permission of MetaStuff, Ltd. For
    69   * written permission, please contact dom4j-info@metastuff.com.
    70   *
    71   * 4. Products derived from this Software may not be called "DOM4J" nor may
    72   * "DOM4J" appear in their names without prior written permission of MetaStuff,
    73   * Ltd. DOM4J is a registered trademark of MetaStuff, Ltd.
    74   *
    75   * 5. Due credit should be given to the DOM4J Project - http://www.dom4j.org
    76   *
    77   * THIS SOFTWARE IS PROVIDED BY METASTUFF, LTD. AND CONTRIBUTORS ``AS IS'' AND
    78   * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    79   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    80   * ARE DISCLAIMED. IN NO EVENT SHALL METASTUFF, LTD. OR ITS CONTRIBUTORS BE
    81   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
    82   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
    83   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
    84   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
    85   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
    86   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    87   * POSSIBILITY OF SUCH DAMAGE.
    88   *
    89   * Copyright 2001-2005 (C) MetaStuff, Ltd. All Rights Reserved.
    90   */