/*
* 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.wizard.parser;
import java.util.ArrayList;
import org.pentaho.reporting.engine.classic.core.wizard.DataAttributeReference;
import org.pentaho.reporting.engine.classic.core.wizard.DataAttributes;
import org.pentaho.reporting.engine.classic.core.wizard.DefaultDataAttributeReferences;
import org.pentaho.reporting.engine.classic.core.wizard.GlobalRule;
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 GlobalRuleReadHandler extends AbstractXmlReadHandler
{
private RuleMetaAttributesReadHandler attributesReadHandler;
private GlobalRule rule;
private ArrayList mappings;
public GlobalRuleReadHandler()
{
this.mappings = 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))
{
if ("data-attributes".equals(tagName))
{
attributesReadHandler = new RuleMetaAttributesReadHandler();
return attributesReadHandler;
}
if ("data-attribute-mapping".equals(tagName))
{
final DataAttributeMappingReadHandler readHandler = new DataAttributeMappingReadHandler();
mappings.add(readHandler);
return readHandler;
}
}
return null;
}
/**
* Done parsing.
*
* @throws SAXException if there is a parsing error.
*/
protected void doneParsing() throws SAXException
{
if (attributesReadHandler == null)
{
throw new SAXException("Mandatory element 'column-attributes' is missing.");
}
final DefaultDataAttributeReferences references = new DefaultDataAttributeReferences();
for (int i = 0; i < mappings.size(); i++)
{
final DataAttributeMappingReadHandler handler = (DataAttributeMappingReadHandler) mappings.get(i);
references.setReference(handler.getTargetDomain(), handler.getTargetName(),
(DataAttributeReference) handler.getObject());
}
rule = new GlobalRule((DataAttributes) attributesReadHandler.getObject(), references);
}
/**
* 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 rule;
}
}