[jdom-interest] IllegalDataException changes

Nathaniel Spurling nathaniel.spurling at db.com
Tue Jul 8 03:55:44 PDT 2003


Hi,

I've been using JDOM for writing XML docs and find it very good;

I found it useful to add accessors to the IllegalDataException class for the constructor arguments. This makes it easier to handle errors arising from non-XML chars in the inputstream.

For example you can do something like:


       private void addContent(Element parent, String content){
                       try{
                               parent.addContent(content);
                       }
                       catch(IllegalDataException e){
                               String illegal_data = e.getIllegalData();
                               String default_replace=" ";
                               String content2 = StringFunctions.Replace(content, illegal_data, default_replace);
                               log.warning("illegal data in inputstream ["+e.getReason()+"] replacing "+e.getIllegalData()+" with "+default_replace);
                               addContent(parent,content2);
                       }
               }

to substitute any illegal characters with spaces.

Source of changed .java file is at bottom of this mail, other than the additional methods the functionality of the class is unchanged.

Cheers,

Nat Spurling





/*--

 $Id: IllegalDataException.java,v 1.10 2002/04/29 13:38:15 jhunter Exp $

 Copyright (C) 2000 Jason Hunter & Brett McLaughlin.
 All rights reserved.

 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions
 are met:

 1. Redistributions of source code must retain the above copyright
    notice, this list of conditions, and the following disclaimer.

 2. Redistributions in binary form must reproduce the above copyright
    notice, this list of conditions, and the disclaimer that follows
    these conditions in the documentation and/or other materials
    provided with the distribution.

 3. The name "JDOM" must not be used to endorse or promote products
    derived from this software without prior written permission.  For
    written permission, please contact <request_AT_jdom_DOT_org>.

 4. Products derived from this software may not be called "JDOM", nor
    may "JDOM" appear in their name, without prior written permission
    from the JDOM Project Management <request_AT_jdom_DOT_org>.

 In addition, we request (but do not require) that you include in the
 end-user documentation provided with the redistribution and/or in the
 software itself an acknowledgement equivalent to the following:
     "This product includes software developed by the
      JDOM Project (http://www.jdom.org/)."
 Alternatively, the acknowledgment may be graphical using the logos
 available at http://www.jdom.org/images/logos.

 THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 DISCLAIMED.  IN NO EVENT SHALL THE JDOM AUTHORS OR THE PROJECT
 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 SUCH DAMAGE.

 This software consists of voluntary contributions made by many
 individuals on behalf of the JDOM Project and was originally
 created by Jason Hunter <jhunter_AT_jdom_DOT_org> and
 Brett McLaughlin <brett_AT_jdom_DOT_org>.  For more information
 on the JDOM Project, please see <http://www.jdom.org/>.

 */

package org.jdom;

/**
 * <code>IllegalDataException</code>
 * is thrown when illegal text is supplied to a
 * JDOM construct.
 *
 * @author Brett McLaughlin
 * @author Elliotte Rusty Harold
 * @version $Revision: 1.10 $, $Date: 2002/04/29 13:38:15 $
 */
public class IllegalDataException extends IllegalArgumentException {

     private static final String CVS_ID =
       "@(#) $RCSfile: IllegalDataException.java,v $ $Revision: 1.10 $ $Date: 2002/04/29 13:38:15 $ $Name: jdom_1_0_b9_rc2 $";

     private String data, construct, reason;


         /**
         *  This will create an <code>Exception</code> indicating that the
         *  specified data is illegal for the construct it was supplied to.
         *
         *@param  data       <code>String</code> data that breaks rules.
         *@param  construct  <code>String</code> construct that data is illegal
         *      for.
         *@param  reason     <code>String</code> message or reason data is
         *      illegal.
         */
         public IllegalDataException(String data, String construct, String reason) {
                 super(new StringBuffer()
                 .append("The data \"")
                 .append(data)
                 .append("\" is not legal for a JDOM ")
                 .append(construct)
                 .append(reason != null ? ": " + reason + "." : "")
                 .toString());
                 this.data = data;
                 this.construct = construct;
                 this.reason = reason;
         }


         /**
         *  This will create an <code>Exception</code> indicating that the
         *  specified data is illegal for the construct it was supplied to.
         *
         *@param  data       <code>String</code> data that breaks rules.
         *@param  construct  <code>String</code> construct that data is illegal
         *      for.
         */
         public IllegalDataException(String data, String construct) {
                 this(data, construct, null);
         }


         /**
         *  Gets the data that breaks rules.
         *
         *@return    <code>String</code> data that breaks rules.
         */
         public String getIllegalData() {
                 return data;
         }


         /**
         *  Gets the Construct that data is illegal for
         *
         *@return    <code>String</code> construct that data is illegal
         *      for.
         */
         public String getConstruct() {
                 return construct;
         }


         /**
         *  Gets the Reason reason data is illegal.
         *
         *@return    <code>String</code> message or reason data is
         *      illegal.
         */
         public String getReason() {
                 return reason;
         }
 }




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