/**
* ========================================
* JFreeReport : a free Java report library
* ========================================
*
* Project Info: http://reporting.pentaho.org/
*
* (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors.
*
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation;
* either version 2.1 of the License, or (at your option) any later version.
*
* This library 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.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* ------------
* $Id: DatasourceFactoryReadHandler.java,v 1.7 2007/04/01 18:49:27 taqua Exp $
* ------------
* (C) Copyright 2000-2005, by Object Refinery Limited.
* (C) Copyright 2005-2007, by Pentaho Corporation.
*/
package org.jfree.report.modules.factories.report.flow;
import org.jfree.report.ReportDataFactory;
import org.jfree.report.modules.factories.data.base.DataFactoryReadHandler;
import org.jfree.resourceloader.Resource;
import org.jfree.resourceloader.ResourceCreationException;
import org.jfree.resourceloader.ResourceKey;
import org.jfree.resourceloader.ResourceKeyCreationException;
import org.jfree.resourceloader.ResourceLoadingException;
import org.jfree.resourceloader.ResourceManager;
import org.jfree.resourceloader.ResourceException;
import org.jfree.xmlns.parser.AbstractXmlReadHandler;
import org.jfree.xmlns.parser.ParseException;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
/**
* Creation-Date: 10.04.2006, 13:27:47
*
* @author Thomas Morgner
*/
public class DatasourceFactoryReadHandler extends AbstractXmlReadHandler
implements DataFactoryReadHandler
{
private ReportDataFactory dataFactory;
public DatasourceFactoryReadHandler()
{
}
/**
* Starts parsing.
*
* @param attrs the attributes.
* @throws SAXException if there is a parsing error.
*/
protected void startParsing(final Attributes attrs) throws SAXException
{
super.startParsing(attrs);
final String href = attrs.getValue(getUri(), "href");
if (href == null)
{
throw new ParseException("Required attribute 'href' is missing.", getLocator());
}
final ResourceKey key = getRootHandler().getSource();
final ResourceManager manager = getRootHandler().getResourceManager();
try
{
final ResourceKey derivedKey = manager.deriveKey(key, href);
final Resource resource = manager.create(derivedKey, null, ReportDataFactory.class);
getRootHandler().getDependencyCollector().add(resource);
dataFactory = (ReportDataFactory) resource.getResource();
}
catch (ResourceKeyCreationException e)
{
throw new ParseException
("Unable to derive key for " + key + " and " + href, getLocator());
}
catch (ResourceCreationException e)
{
throw new ParseException
("Unable to parse resource for " + key + " and " + href, getLocator());
}
catch (ResourceLoadingException e)
{
throw new ParseException
("Unable to load resource data for " + key + " and " + href, getLocator());
}
catch (ResourceException e)
{
throw new ParseException("Unable to parse resource for " + key + " and " + href, getLocator());
}
}
public ReportDataFactory getDataFactory()
{
return dataFactory;
}
/**
* Returns the object for this element or null, if this element does not
* create an object.
*
* @return the object.
* @throws SAXException if there is a parsing error.
*/
public Object getObject() throws SAXException
{
return dataFactory;
}
}