On Tue, Jan 4, 2011 at 09:53, Amila Suriarachchi <[email protected]> wrote: > hi, > > In order to add the inheritance support to POJO we need to find the Qname > from the string getting from the xsi:type. > > here is an example > > String xmlString = "<ns2:addPerson > xmlns:ns2=\"http://service.test.apache.org\";>\n" + > " <ns2:p > xmlns:ns1=\"http://pojo.service.test.apache.org/xsd\"; > xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"; > xsi:type=\"ns1:Employee\">\n" + > " <ns1:name>AAA</ns1:name>\n" + > " > <ns1:employeeNumber>12</ns1:employeeNumber>\n" + > " </ns2:p>\n" + > " </ns2:addPerson>"; > > try { > XMLStreamReader xmlStreamReader = > StAXUtils.createXMLStreamReader(new > ByteArrayInputStream(xmlString.getBytes())); > StAXOMBuilder stAXOMBuilder = new > StAXOMBuilder(xmlStreamReader); > OMElement omElement = stAXOMBuilder.getDocumentElement(); > > OMElement pElement = omElement.getFirstElement(); > String instanceTypeName = pElement.getAttributeValue(new > QName("http://www.w3.org/2001/XMLSchema-instance","type";)); > > QName typeQName = null; > if (instanceTypeName.indexOf(":") > -1){ > String prefix = instanceTypeName.substring(0, > instanceTypeName.indexOf(":")); > for (Iterator namespaceIter = > pElement.getAllDeclaredNamespaces(); namespaceIter.hasNext();){ > OMNamespace omNamespace = (OMNamespace) > namespaceIter.next(); > if (omNamespace.getPrefix().equals(prefix)){ > typeQName = new QName(omNamespace.getNamespaceURI(), > instanceTypeName.substring(instanceTypeName.indexOf(":") + 1)); > } > } > > System.out.println("Name space ==> " + > pElement.getXMLStreamReader().getNamespaceURI(prefix)); > System.out.println("Name space from context ==> " + > pElement.getXMLStreamReader().getNamespaceContext().getNamespaceURI(prefix)); > } > > System.out.println("Qname from iterators ==>" + > instanceTypeName); > } catch (XMLStreamException e) { > e.printStackTrace(); > } > > this gives following out put. > > Name space ==> null > Name space from context ==> > Qname from iterators ==>ns1:Employee > > I can get the namespace by iterating through all the namespaces.
That is not the correct algorithm to resolve a QName, because the namespace may be declared on an ancestor of the element. OMElement has a resolveQName method to do that correctly. > but name spaces are not available in stream namesapce contextes. That is kind of expected because the XMLStreamReader is initially on a START_DOCUMENT event where the namespace context is still empty. > is there are a better way to get the namesapce without iterating? > > thanks, > Amila. > > > -- > Amila Suriarachchi > WSO2 Inc. > blog: http://amilachinthaka.blogspot.com/ > --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
