Package org.pentaho.reporting.engine.classic.core.modules.parser.bundle.layout.elements

Source Code of org.pentaho.reporting.engine.classic.core.modules.parser.bundle.layout.elements.CrosstabColumnGroupReadHandler

/*
* 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 - 2013 Object Refinery Ltd, Pentaho Corporation and Contributors..  All rights reserved.
*/

package org.pentaho.reporting.engine.classic.core.modules.parser.bundle.layout.elements;

import java.util.Arrays;

import org.pentaho.reporting.engine.classic.core.CrosstabCell;
import org.pentaho.reporting.engine.classic.core.CrosstabCellBody;
import org.pentaho.reporting.engine.classic.core.CrosstabColumnGroup;
import org.pentaho.reporting.engine.classic.core.CrosstabHeader;
import org.pentaho.reporting.engine.classic.core.GroupDataBody;
import org.pentaho.reporting.engine.classic.core.ItemBand;
import org.pentaho.reporting.engine.classic.core.filter.types.bands.CrosstabColumnGroupType;
import org.pentaho.reporting.engine.classic.core.modules.parser.bundle.BundleNamespaces;
import org.pentaho.reporting.libraries.xmlns.parser.IgnoreAnyChildReadHandler;
import org.pentaho.reporting.libraries.xmlns.parser.ParseException;
import org.pentaho.reporting.libraries.xmlns.parser.StringReadHandler;
import org.pentaho.reporting.libraries.xmlns.parser.XmlReadHandler;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;

public class CrosstabColumnGroupReadHandler extends AbstractElementReadHandler
{
  private CrosstabHeaderBandReadHandler headerReadHandler;
  private CrosstabSummaryHeaderBandReadHandler summaryHeaderBandReadHandler;
  private CrosstabTitleHeaderBandReadHandler titleHeaderBandReadHandler;
  private CrosstabColumnSubGroupBodyReadHandler columnSubGroupBodyReadHandler;
  private DataGroupBodyReadHandler groupBodyReadHandler;
  private CrosstabCellBodyReadHandler cellBodyReadHandler;
  private GroupHeaderReadHandler legacyHeaderReadHandler;

  private StringReadHandler fieldReadHandler;

  public CrosstabColumnGroupReadHandler()
      throws ParseException
  {
    super(CrosstabColumnGroupType.INSTANCE);
  }

  /**
   * 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 (BundleNamespaces.LAYOUT.equals(uri))
    {
      if ("crosstab-header".equals(tagName))
      {
        if (headerReadHandler == null)
        {
          headerReadHandler = new CrosstabHeaderBandReadHandler();
        }
        return headerReadHandler;
      }
      if ("group-header".equals(tagName))
      {
        if (legacyHeaderReadHandler == null)
        {
          legacyHeaderReadHandler = new GroupHeaderReadHandler();
        }
        return legacyHeaderReadHandler;
      }
      if ("field".equals(tagName))
      {
        if (fieldReadHandler == null)
        {
          fieldReadHandler = new StringReadHandler();
        }
        return fieldReadHandler;
      }
      if ("crosstab-title-header".equals(tagName))
      {
        if (titleHeaderBandReadHandler == null)
        {
          titleHeaderBandReadHandler = new CrosstabTitleHeaderBandReadHandler();
        }
        return titleHeaderBandReadHandler;
      }
      if ("crosstab-summary-header".equals(tagName))
      {
        if (summaryHeaderBandReadHandler == null)
        {
          summaryHeaderBandReadHandler = new CrosstabSummaryHeaderBandReadHandler();
        }
        return summaryHeaderBandReadHandler;
      }
      if ("crosstab-column-group-body".equals(tagName))
      {
        columnSubGroupBodyReadHandler = new CrosstabColumnSubGroupBodyReadHandler();
        return columnSubGroupBodyReadHandler;
      }
      if ("data-body".equals(tagName))
      {
        groupBodyReadHandler = new DataGroupBodyReadHandler();
        return groupBodyReadHandler;
      }
      if ("crosstab-cell-body".equals(tagName))
      {
        cellBodyReadHandler = new CrosstabCellBodyReadHandler();
        return cellBodyReadHandler;
      }
      if ("crosstab-title-footer".equals(tagName) ||
          "crosstab-summary-footer".equals(tagName) ||
          "group-footer".equals(tagName))
      {
        return new IgnoreAnyChildReadHandler();
      }
    }
    return super.getHandlerForChild(uri, tagName, atts);
  }

  /**
   * Done parsing.
   *
   * @throws SAXException if there is a parsing error.
   */
  protected void doneParsing() throws SAXException
  {
    super.doneParsing();

    final CrosstabColumnGroup group = getElement();
    if (fieldReadHandler != null)
    {
      group.setField(fieldReadHandler.getResult());
    }
    if (headerReadHandler != null)
    {
      group.setHeader(headerReadHandler.getElement());
    }
    else if (legacyHeaderReadHandler != null)
    {
      final CrosstabHeader header = new CrosstabHeader();
      legacyHeaderReadHandler.getElement().copyInto(header);
      header.addElements(Arrays.asList(legacyHeaderReadHandler.getElement().getElementArray()));
      group.setHeader(header);
    }
    if (summaryHeaderBandReadHandler != null)
    {
      group.setSummaryHeader(summaryHeaderBandReadHandler.getElement());
    }
    if (titleHeaderBandReadHandler != null)
    {
      group.setTitleHeader(titleHeaderBandReadHandler.getElement());
    }
    if (columnSubGroupBodyReadHandler != null)
    {
      group.setBody(columnSubGroupBodyReadHandler.getElement());
    }
    else if (cellBodyReadHandler != null)
    {
      group.setBody(cellBodyReadHandler.getElement());
    }
    else
    {
      final GroupDataBody element = groupBodyReadHandler.getElement();
      final ItemBand itemBand = element.getItemBand();
      final CrosstabCell cell = new CrosstabCell();
      itemBand.copyInto(cell);
      cell.addElements(Arrays.asList(itemBand.getElementArray()));

      final CrosstabCellBody body = new CrosstabCellBody();
      body.addElement(cell);
      group.setBody(body);
    }
  }

  public CrosstabColumnGroup getElement()
  {
    return (CrosstabColumnGroup) super.getElement();
  }
}
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