/*
* 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.base.common;
import org.pentaho.reporting.engine.classic.core.DataFactory;
import org.pentaho.reporting.engine.classic.core.modules.parser.base.DataFactoryReadHandler;
import org.pentaho.reporting.engine.classic.core.modules.parser.base.PropertyAttributes;
import org.pentaho.reporting.engine.classic.core.modules.parser.base.compat.CompatibilityMapperUtil;
import org.pentaho.reporting.libraries.base.util.ObjectUtilities;
import org.pentaho.reporting.libraries.resourceloader.Resource;
import org.pentaho.reporting.libraries.resourceloader.ResourceCreationException;
import org.pentaho.reporting.libraries.resourceloader.ResourceException;
import org.pentaho.reporting.libraries.resourceloader.ResourceKey;
import org.pentaho.reporting.libraries.resourceloader.ResourceKeyCreationException;
import org.pentaho.reporting.libraries.resourceloader.ResourceLoadingException;
import org.pentaho.reporting.libraries.resourceloader.ResourceManager;
import org.pentaho.reporting.libraries.xmlns.parser.ParseException;
import org.xml.sax.SAXException;
/**
* Creation-Date: 27.06.2006, 12:09:08
*
* @author Thomas Morgner
*/
public class DataFactoryRefReadHandler extends AbstractPropertyXmlReadHandler
implements DataFactoryReadHandler
{
private DataFactory dataFactory;
public DataFactoryRefReadHandler()
{
}
protected void startParsing(final PropertyAttributes attrs)
throws SAXException
{
final String href = attrs.getValue(getUri(), "href");
// we have a HREF given, ...
if (href != null)
{
// load ..
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, DataFactory.class);
getRootHandler().getDependencyCollector().add(resource);
dataFactory = (DataFactory) resource.getResource();
}
catch (ResourceKeyCreationException e)
{
throw new ParseException("Unable to derive key for " + key + " and " + href, e, getLocator());
}
catch (ResourceCreationException e)
{
throw new ParseException("Unable to parse resource for " + key + " and " + href, e, getLocator());
}
catch (ResourceLoadingException e)
{
throw new ParseException("Unable to load resource data for " + key + " and " + href, e, getLocator());
}
catch (ResourceException e)
{
throw new ParseException("Unable to parse resource for " + key + " and " + href, e, getLocator());
}
return;
}
final String dfType = CompatibilityMapperUtil.mapClassName(attrs.getValue(getUri(), "type"));
if (dfType != null)
{
final Object o = ObjectUtilities.loadAndInstantiate(dfType, getClass(), DataFactory.class);
if (o == null)
{
throw new ParseException("'type' did not point to a usable DataFactory implementation.", getLocator());
}
dataFactory = (DataFactory) o;
}
}
public DataFactory getDataFactory()
{
return dataFactory;
}
/**
* Returns the object for this element or null, if this element does not create an object.
*
* @return the object.
*/
public Object getObject()
{
return dataFactory;
}
}