Hi
I'm presuming you have a method like this one :
I've experimented a bit and I've managed to have a test producing the
expected data, but only when using an explicit JAXBElement, this one
@Test
public void testWriteDerivedTypeJaxbElement() throws Exception {
JAXBElementProvider provider = new JAXBElementProvider();
Method m = CollectionsResource.class.getMethod("getBaseJaxb", new
Class[0]);
DerivedType derived = new DerivedType();
JAXBElement<BaseType> jaxb = new JAXBElement<BaseType>(_Base_QNAME,
BaseType.class, null, derived);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
provider.writeTo(jaxb, m.getReturnType(), m.getGenericReturnType(),
new Annotation[0], MediaType.TEXT_XML_TYPE, new
MetadataMap<String, Object>(), bos);
String s = bos.toString();
System.out.println(s);
}
produces
<?xml version="1.0" encoding="UTF-8" standalone="yes"?><ns2:base
xmlns:ns2="http://www.cisco.com/dms/xml/ns/dsmCommonService";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:type="ns2:DerivedType"/>
public class RootResource {
@GET
public BaseType getType() { return new DerivedType(); }
}
I'm not sure why JAXB chooses to serialize it as
<?xml version="1.0" encoding="UTF-8" standalone="yes"?><ns2:derivedType
xmlns:ns2="http://www.cisco.com/dms/xml/ns/dsmCommonService"/>
in this case, given that ObjectFactory has a method returning
JAXBElement<BaseType>. I tried to force an ObjectFactory method returning
JAXBElement<BaseType> be used, I removed @XmlRootElement on BaseType but it
didn't make any difference. Removing @XmlRootElement on DerivedType causes a
JAXB failure - though ObjectFactory has a method returning
JAXBElement<DerivedType>.
Can you please post a question to the JAXB users list ? I'd be interested to
see what they reply. Unless our resident experts (Dan, Benson) can help ?
thanks, Sergey
qzpmwo qzpmwo wrote:
>
> Hi,
>
> I'm having a strange problem with CXF RESTful service marsahlling base and
> derived xsd types.
>
> XSD:
>
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema";
> xmlns:jaxb="http://java.sun.com/xml/ns/jaxb";
> xmlns="http://www.cisco.com/dms/xml/ns/dsmCommonService";
> targetNamespace="http://www.cisco.com/dms/xml/ns/dsmCommonService";
> elementFormDefault="unqualified" jaxb:version="2.0">
>
> <xs:complexType name="BaseType">
> <xs:sequence>
> </xs:sequence>
> </xs:complexType>
>
> <xs:complexType name="DerivedType">
> <xs:complexContent>
> <xs:extension base="BaseType">
> <xs:sequence>
> </xs:sequence>
> </xs:extension>
> </xs:complexContent>
> </xs:complexType>
>
> <xs:complexType name="ListType">
> <xs:sequence>
> <xs:element name="item" type="BaseType" minOccurs="0"
> maxOccurs="unbounded" />
> </xs:sequence>
> </xs:complexType>
>
> <xs:element name="base" type="BaseType" />
> <xs:element name="derived" type="DerivedType" />
> <xs:element name="list" type="ListType" />
>
> </xs:schema>
>
> xjc has been used to jenerate java code from xsd. After that:
>
> 1) @XmlSeeAlso pointing to DerivedType class and @XmlRootElement
> annotations have been added to BaseType java class code
> 2) @XmlRootElement has been added to DerivedType java class code
> 3) @XmlRootElement has been added to ListType java class code
>
> When my CXF rest service returns list of the Derived objects it produces
> xml
> correctly:
>
> <list>
> <base xsi:type="DerivedType">...</base>
> ...
> <base xsi:type="DerivedType">...</base>
> </list>
>
> But when I'm requesting 1 instance of the Derived object XML is wrong (as
> I
> understand)
>
> <derived>...</derived>
>
> Since I did not specify substitution group in my opinion xml should be
> like
> in list:
>
> <base xsi:type="DerivedType">...</base>
>
> Could you please clarify the issue for me and may be help me to solve this
> problem.
>
> Forgot to mention that I'm using CXF 2.2
>
> Thanks in advance
> --- Karen
>
>
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