Hi Lulseged,
I have only used it to modify. I presume you can do manipulate the
document in any way that passes schema validation. The binder method
pairs a document with a JAXB object. XPath only selects, so you would
need to use DOM / Node functions to delete or add.
http://www.w3.org/2003/01/dom2-javadoc/org/w3c/dom/Node.html (rudimentary api)
Cheers,
Hank
On Mon, Jul 1, 2013 at 9:46 PM, Lulseged Zerfu
<lulseged.zerfu_at_ericsson.com> wrote:
> Hi
>
> Can I in this way delete, add or modify an element or attribute?
>
> Thanks
>
> -----Original Message-----
> From: Hank Ratzesberger [mailto:xml_at_xmlwerks.com]
> Sent: den 1 juli 2013 17:59
> To: users_at_jaxb.java.net
> Subject: Re: XPATH and JAXB
>
> Hi BR,
>
> I think what you are looking for is the JAXB binder method, that can map a JAXB element to a document, then you can use XPath on the doc, then the binder will sync the changes:
>
> try {
> JAXBContext jaxbContext = JAXBContext.newInstance( com.blah.blah.MyType.class );
> QName qname = new QName("http://www.example.com/schema", "myObject"); Binder<Node> binder = jaxbContext.createBinder(); DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
> //dbf.setNamespaceAware(false); // This was tested and does not work, needs a namespace context dbf.setValidating(false); DocumentBuilder db = dbf.newDocumentBuilder();
> Document doc = db.newDocument();
>
> //Binder will maintains association between two views.
> binder.marshal( new JAXBElement<MyType>(qname, com.blah.blah.MyType.class, MyType), doc );
>
> XPath xpath = XPathFactory.newInstance().newXPath();
> xpath.setNamespaceContext( new MyNamespaceContext() );
>
> // Example xpath
> //Node node = (Node) xpath.evaluate("/ns:thing", doc, XPathConstants.NODE );
>
>
> Node n = (Node) xpath.evaluate( path, doc, XPathConstants.NODE );
> if (n != null) {
> n.setTextContent( text );
> }
>
> // And here is where you sync things up
>
> binder.updateJAXB( doc );
>
> } catch( Exception e ) {
> //e.printStackTrace();
> log.error( e.getClass() + ": " + e.getMessage() ); return null; } // These are the specific exceptions:
> //catch (JAXBException e) {
> // e.printStackTrace();
> //} catch (XPathExpressionException e) { // e.printStackTrace(); //} catch (ParserConfigurationException e) { // e.printStackTrace(); //} catch (TransformerException e) { // e.printStackTrace(); //} //
>
> Regards,
> Hank
>
>
> On Mon, Jul 1, 2013 at 1:30 AM, Lulseged Zerfu <lulseged.zerfu_at_ericsson.com> wrote:
>> Hi
>>
>>
>>
>> I started to use JAXB and everything works fine. Now I need to add,
>> modify or delete element or attribute and I have to use XPATH.
>>
>>
>>
>> Does JAXB works with XPATH? Or are there any other implementation?
>>
>>
>>
>> Any road map in mind?
>>
>>
>>
>> Any example?
>>
>>
>>
>> BR
>>
>> Lulseged
>
>
>
> --
> Hank Ratzesberger
> XMLWerks.com
--
Hank Ratzesberger
XMLWerks.com