Package org.pentaho.reporting.engine.classic.extensions.parsers.reportdesigner.datasets

Source Code of org.pentaho.reporting.engine.classic.extensions.parsers.reportdesigner.datasets.PropertiesDataSetBulkReadHandler

/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program 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 Lesser General Public License for more details.
*
* Copyright (c) 2001 - 2009 Object Refinery Ltd, Pentaho Corporation and Contributors.  All rights reserved.
*/

package org.pentaho.reporting.engine.classic.extensions.parsers.reportdesigner.datasets;

import java.util.ArrayList;

import org.pentaho.reporting.engine.classic.core.MasterReport;
import org.pentaho.reporting.engine.classic.core.modules.parser.base.ReportParserUtil;
import org.pentaho.reporting.engine.classic.core.parameters.DefaultParameterDefinition;
import org.pentaho.reporting.engine.classic.core.parameters.ParameterAttributeNames;
import org.pentaho.reporting.engine.classic.core.parameters.PlainParameter;
import org.pentaho.reporting.libraries.xmlns.parser.AbstractXmlReadHandler;
import org.pentaho.reporting.libraries.xmlns.parser.XmlReadHandler;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;

/**
* Todo: Document Me
*
* @author Thomas Morgner
*/
public class PropertiesDataSetBulkReadHandler extends AbstractXmlReadHandler
{
  private ArrayList properties;

  public PropertiesDataSetBulkReadHandler()
  {
    properties = new ArrayList();
  }

  /**
   * Returns the handler for a child element.
   *
   * @param uri     the URI of the namespace of the current element.
   * @param tagName the tag name.
   * @param atts    the attributes.
   * @return the handler or null, if the tagname is invalid.
   * @throws SAXException if there is a parsing error.
   */
  protected XmlReadHandler getHandlerForChild(final String uri,
                                              final String tagName,
                                              final Attributes atts) throws SAXException
  {
    if (isSameNamespace(uri) == false)
    {
      return null;
    }
    if ("property".equals(tagName))
    {
      final TypedPropertyReadHandler readHandler = new TypedPropertyReadHandler();
      properties.add(readHandler);
      return readHandler;
    }
    return null;
  }

  /**
   * Done parsing.
   *
   * @throws SAXException if there is a parsing error.
   */
  protected void doneParsing() throws SAXException
  {
    final Object o = getRootHandler().getHelperObject(ReportParserUtil.HELPER_OBJ_REPORT_NAME);
    if (o instanceof MasterReport == false)
    {
      return;
    }

    final MasterReport report = (MasterReport) o;
    final DefaultParameterDefinition parameterDefinition = new DefaultParameterDefinition();
    for (int i = 0; i < properties.size(); i++)
    {
      final TypedPropertyReadHandler readHandler = (TypedPropertyReadHandler) properties.get(i);
      final String parameterName = readHandler.getName();
      if ("report.date".equals(parameterName))
      {
        continue;
      }
      if ("report.name".equals(parameterName))
      {
        continue;
      }
     
      final PlainParameter parameter = new PlainParameter(parameterName);
      parameter.setValueType(readHandler.getType());
      parameter.setParameterAttribute
          (ParameterAttributeNames.Core.NAMESPACE, ParameterAttributeNames.Core.TYPE, "textbox");
      parameter.setDefaultValue(readHandler.getObject());
      parameterDefinition.addParameterDefinition(parameter);
    }

    report.setParameterDefinition(parameterDefinition);
  }

  /**
   * Returns the object for this element or null, if this element does
   * not create an object.
   *
   * @return the object.
   * @throws SAXException if an parser error occured.
   */
  public Object getObject() throws SAXException
  {
    return null;
  }
}
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