/*
* 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.core.modules.parser.simple.readhandlers;
import org.pentaho.reporting.engine.classic.core.AbstractReportDefinition;
import org.pentaho.reporting.engine.classic.core.AttributeNames;
import org.pentaho.reporting.engine.classic.core.Group;
import org.pentaho.reporting.engine.classic.core.GroupList;
import org.pentaho.reporting.engine.classic.core.RelationalGroup;
import org.pentaho.reporting.engine.classic.core.modules.parser.base.PropertyAttributes;
import org.pentaho.reporting.engine.classic.core.modules.parser.base.ReportParserUtil;
import org.pentaho.reporting.engine.classic.core.modules.parser.base.common.AbstractPropertyXmlReadHandler;
import org.pentaho.reporting.engine.classic.core.modules.parser.base.common.GroupFieldsReadHandler;
import org.pentaho.reporting.libraries.xmlns.parser.XmlReadHandler;
import org.xml.sax.SAXException;
public class GroupReadHandler extends AbstractPropertyXmlReadHandler
{
/**
* Literal text for an XML report element.
*/
public static final String GROUP_HEADER_TAG = "groupheader";
/**
* Literal text for an XML report element.
*/
public static final String GROUP_FOOTER_TAG = "groupfooter";
/**
* Literal text for an XML report element.
*/
public static final String FIELDS_TAG = "fields";
/**
* Literal text for an XML report element.
*/
public static final String FIELD_TAG = "field";
private static final String NAME_ATT = "name";
private GroupList groupList;
private RelationalGroup group;
public GroupReadHandler(final GroupList groupList)
{
this.groupList = groupList;
}
/**
* Starts parsing.
*
* @param attrs the attributes.
* @throws org.xml.sax.SAXException if there is a parsing error.
*/
protected void startParsing(final PropertyAttributes attrs)
throws SAXException
{
final String groupName = attrs.getValue(getUri(), GroupReadHandler.NAME_ATT);
if (groupName != null)
{
final AbstractReportDefinition report = (AbstractReportDefinition)
getRootHandler().getHelperObject(ReportParserUtil.HELPER_OBJ_REPORT_NAME);
final Group maybeDefaultGroup = report.getGroupByName(groupName);
if (maybeDefaultGroup instanceof RelationalGroup)
{
group = (RelationalGroup) maybeDefaultGroup;
}
else
{
group = new RelationalGroup();
group.setName(groupName);
group.setAttribute(AttributeNames.Core.NAMESPACE, AttributeNames.Core.SOURCE, getRootHandler().getSource());
}
}
else
{
group = new RelationalGroup();
group.setAttribute(AttributeNames.Core.NAMESPACE, AttributeNames.Core.SOURCE, getRootHandler().getSource());
}
}
/**
* Returns the handler for a child element.
*
* @param tagName the tag name.
* @param atts the attributes.
* @return the handler or null, if the tagname is invalid.
* @throws org.xml.sax.SAXException if there is a parsing error.
*/
protected XmlReadHandler getHandlerForChild(final String uri,
final String tagName,
final PropertyAttributes atts)
throws SAXException
{
if (getUri().equals(uri) == false)
{
return null;
}
if (tagName.equals(GroupReadHandler.GROUP_HEADER_TAG))
{
return new GroupHeaderReadHandler(group.getHeader());
}
else if (tagName.equals(GroupReadHandler.GROUP_FOOTER_TAG))
{
return new GroupFooterReadHandler(group.getFooter());
}
else if (tagName.equals(GroupReadHandler.FIELDS_TAG))
{
return new GroupFieldsReadHandler(group);
}
return null;
}
/**
* Done parsing.
*
* @throws org.xml.sax.SAXException if there is a parsing error.
*/
protected void doneParsing()
throws SAXException
{
groupList.add(group);
}
/**
* Returns the object for this element.
*
* @return the object.
*/
public Object getObject()
{
return group;
}
}