Source for org.jfree.report.modules.factories.report.flow.ExpressionReadHandler

   1: /**
   2:  * ========================================
   3:  * JFreeReport : a free Java report library
   4:  * ========================================
   5:  *
   6:  * Project Info:  http://reporting.pentaho.org/
   7:  *
   8:  * (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors.
   9:  *
  10:  * This library is free software; you can redistribute it and/or modify it under the terms
  11:  * of the GNU Lesser General Public License as published by the Free Software Foundation;
  12:  * either version 2.1 of the License, or (at your option) any later version.
  13:  *
  14:  * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
  15:  * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  16:  * See the GNU Lesser General Public License for more details.
  17:  *
  18:  * You should have received a copy of the GNU Lesser General Public License along with this
  19:  * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  20:  * Boston, MA 02111-1307, USA.
  21:  *
  22:  * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
  23:  * in the United States and other countries.]
  24:  *
  25:  * ------------
  26:  * $Id: ExpressionReadHandler.java 3525 2007-10-16 11:43:48Z tmorgner $
  27:  * ------------
  28:  * (C) Copyright 2000-2005, by Object Refinery Limited.
  29:  * (C) Copyright 2005-2007, by Pentaho Corporation.
  30:  */
  31: package org.jfree.report.modules.factories.report.flow;
  32: 
  33: import org.jfree.xmlns.parser.StringReadHandler;
  34: import org.jfree.xmlns.parser.XmlReadHandler;
  35: import org.xml.sax.Attributes;
  36: import org.xml.sax.SAXException;
  37: 
  38: /**
  39:  * Creation-Date: 09.04.2006, 13:40:08
  40:  *
  41:  * @author Thomas Morgner
  42:  */
  43: public class ExpressionReadHandler extends AbstractExpressionReadHandler
  44: {
  45:   private StringReadHandler nameReadHandler;
  46: 
  47:   public ExpressionReadHandler()
  48:   {
  49:   }
  50: 
  51:   /**
  52:    * Returns the handler for a child element.
  53:    *
  54:    * @param tagName the tag name.
  55:    * @param atts    the attributes.
  56:    * @return the handler or null, if the tagname is invalid.
  57:    * @throws SAXException       if there is a parsing error.
  58:    * @throws XmlReaderException if there is a reader error.
  59:    */
  60:   protected XmlReadHandler getHandlerForChild(final String uri,
  61:                                               final String tagName,
  62:                                               final Attributes atts)
  63:           throws SAXException
  64:   {
  65:     if (isSameNamespace(uri) == false)
  66:     {
  67:       return null;
  68:     }
  69:     if ("name".equals(tagName))
  70:     {
  71:       nameReadHandler = new StringReadHandler();
  72:       return nameReadHandler;
  73:     }
  74:     return super.getHandlerForChild(uri, tagName, atts);
  75:   }
  76: 
  77:   /**
  78:    * Done parsing.
  79:    *
  80:    * @throws SAXException       if there is a parsing error.
  81:    * @throws XmlReaderException if there is a reader error.
  82:    */
  83:   protected void doneParsing() throws SAXException
  84:   {
  85:     super.doneParsing();
  86:     if (nameReadHandler != null)
  87:     {
  88:       getExpression().setName(nameReadHandler.getResult());
  89:     }
  90:   }
  91: }