Java™ Platform
Standard Ed. 6

javax.xml.bind
Interface UnmarshallerHandler

All Superinterfaces:
ContentHandler

public interface UnmarshallerHandler
extends ContentHandler

Unmarshaller implemented as SAX ContentHandler.

Applications can use this interface to use their JAXB provider as a component in an XML pipeline. For example:

       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();                          
 

This interface is reusable: even if the user fails to unmarshal an object, s/he can still start a new round of unmarshalling.

Since:
JAXB1.0
See Also:
Unmarshaller.getUnmarshallerHandler()

Method Summary
 Object getResult()
          Obtains the unmarshalled result.
 
Methods inherited from interface org.xml.sax.ContentHandler
characters, endDocument, endElement, endPrefixMapping, ignorableWhitespace, processingInstruction, setDocumentLocator, skippedEntity, startDocument, startElement, startPrefixMapping
 

Method Detail

getResult

Object getResult()
                 throws JAXBException,
                        IllegalStateException
Obtains the unmarshalled result. This method can be called only after this handler receives the endDocument SAX event.

Returns:
always return a non-null valid object which was unmarshalled.
Throws:
IllegalStateException - if this method is called before this handler receives the endDocument event.
JAXBException - if there is any unmarshalling error. Note that the implementation is allowed to throw SAXException during the parsing when it finds an error.

Java™ Platform
Standard Ed. 6

Submit a bug or feature
For further API reference and developer documentation, see Java SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

Copyright © 1993, 2011, Oracle and/or its affiliates. All rights reserved.

Scripting on this page tracks web page traffic, but does not change the content in any way.