/*
* Copyright 2003 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
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>
* @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;
}
|