/*
* Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package javax.xml.bind;
import org.xml.sax.ContentHandler;
/**
* Unmarshaller implemented as SAX ContentHandler.
*
* <p>
* Applications can use this interface to use their JAXB provider as a component
* in an XML pipeline. For example:
*
* <pre>
* JAXBContext context = JAXBContext.newInstance( "org.acme.foo" );
*
* Unmarshaller unmarshaller = context.createUnmarshaller();
*
* UnmarshallerHandler unmarshallerHandler = unmarshaller.getUnmarshallerHandler();
*
* SAXParserFactory spf = SAXParserFactory.newInstance();
* spf.setNamespaceAware( true );
*
* XMLReader xmlReader = spf.newSAXParser().getXMLReader();
* xmlReader.setContentHandler( unmarshallerHandler );
* xmlReader.parse(new InputSource( new FileInputStream( XML_FILE ) ) );
*
* MyObject myObject= (MyObject)unmarshallerHandler.getResult();
* </pre>
*
* <p>
* This interface is reusable: even if the user fails to unmarshal
* an object, s/he can still start a new round of unmarshalling.
*
* @author <ul><li>Kohsuke KAWAGUCHI, Sun Microsystems, Inc.</li></ul>
* @version $Revision: 1.2 $ $Date: 2006/03/08 16:55:17 $
* @see Unmarshaller#getUnmarshallerHandler()
* @since JAXB1.0
*/
public interface UnmarshallerHandler extends ContentHandler
{
/**
* Obtains the unmarshalled result.
*
* This method can be called only after this handler
* receives the endDocument SAX event.
*
* @exception IllegalStateException
* if this method is called before this handler
* receives the endDocument event.
*
* @exception JAXBException
* if there is any unmarshalling error.
* Note that the implementation is allowed to throw SAXException
* during the parsing when it finds an error.
*
* @return
* always return a non-null valid object which was unmarshalled.
*/
Object getResult() throws JAXBException, IllegalStateException;
}