package fr.in2p3.jsaga.helpers.xslt;
   
   import org.apache.log4j.Logger;
   
   import javax.xml.transform.ErrorListener;
   import javax.xml.transform.TransformerException;
   
   /* ***************************************************
   * *** Centre de Calcul de l'IN2P3 - Lyon (France) ***
  * ***             http://cc.in2p3.fr/             ***
  * ***************************************************
  * File:   XSLLogger
  * Author: Sylvain Reynaud (sreynaud@in2p3.fr)
  * Date:   17 dec. 2007
  * ***************************************************
  * Description:                                      */
  /**
   *
   */
  public class XSLLogger implements ErrorListener {
      private static Logger s_logger = Logger.getLogger(XSLLogger.class);
      private TransformerException m_cause;
  
      /** invoked when <xsl:message terminate="no"/> */
      public void warning(TransformerException exception) throws TransformerException {
          m_cause = exception;
          s_logger.info(exception.getMessageAndLocation());
          throw exception;
      }
  
      /** invoked when <xsl:message terminate="yes"/> */
      public void error(TransformerException exception) throws TransformerException {
          s_logger.error(exception.getMessageAndLocation());
          throw exception;
      }
  
      /** explicitely invoked by XSLTransformer */
      public void fatalError(TransformerException exception) throws TransformerException {
          if (m_cause != null) {
              throw m_cause;
          } else {
              throw exception;
          }
      }
  }