Re: Jaxb Transformers

>
> Hi,
>
> since JAXB-based unmarshalling of XML messages received via XML is one of
> the first requirements for my mule prototype / showcase, I would like to
> follow up on the JIRA that has been created for this work in the meantime:
> http://mule.mulesource.org/jira/browse/MULE-1208
>
> As far as my understanding reaches JAXB unmarshalling is not yet available
> as part of mule's XML modules?
>
> In order to get something like the custom transformer workaround working
> (see below) it looks like one has to include some special mule module in
> one's maven config / pom.xml config file in order to (indirectly) have JAXB
> jars available as part of one's project (this is what comments on the JIRA
> ticket say).
>
> ==> Could somebody advise on how exactly I can get the custom transformer /
> the previously posted codebase to work?  How can I ensure that I have JAXB
> jars available + that there are no JAR version clashes (which mule module to
> load/to add to pom.xml)?
>
> Also...
>
> ==> Could I use Spring XOM (part of spring-ws) as the basis for a custom
> transformer and how would I bring this into the mule XML config? Which
> modules would I have to load for this via pom.xml?
>
> Thanks + regards, Mike
>
> In addition, ...
> ...
>
>
> James Richardson-3 wrote:
>>
>> Not sure if these already exist, but might be useful to somebody....
>>
>> Configure like this:
>>
>>   <transformer name="JaxbXmlToObject" className="JaxbXmlToObject">
>>             <properties>
>>                 <property name="jaxbContextFactoryClass"
>> value="YourJaxbContextFactory "/>
>>             </properties>
>>         </transformer>
>>
>> public class YourJaxbContextFactory {
>>     public static JAXBContext getJaxbContext() throws JAXBException {
>>         return JAXBContext.newInstance(SomeJaxb.class,AnotherJaxb.class);
>>     }
>> }
>>
>> Best Regards,
>>
>> James
>>
>>
>> public abstract class AbstractJaxbTransformer extends
>> AbstractEventAwareTransformer {
>>     private String jaxbContextFactoryClass;
>>     protected JAXBContext jaxbContext;
>>
>>     @Override
>>     public void initialise() throws InitialisationException {
>>
>>         try {
>>             Class clazz = Class.forName(jaxbContextFactoryClass);
>>             Method method = clazz.getMethod("getJaxbContext");
>>             jaxbContext = (JAXBContext) method.invoke(clazz);
>>         }
>>         catch (ClassNotFoundException e) {
>>             throw new InitialisationException(e, this);
>>         }
>>         catch (NoSuchMethodException e) {
>>             throw new InitialisationException(e, this);
>>         }
>>         catch (IllegalAccessException e) {
>>             throw new InitialisationException(e, this);
>>         }
>>         catch (InvocationTargetException e) {
>>             throw new InitialisationException(e, this);
>>         }
>>     }
>>
>>     public String getJaxbContextFactoryClass() {
>>         return jaxbContextFactoryClass;
>>     }
>>
>>     public void setJaxbContextFactoryClass(String jaxbContextFactoryClass)
>> {
>>         this.jaxbContextFactoryClass = jaxbContextFactoryClass;
>>     }
>>
>>     public JAXBContext getJaxbContext() {
>>         return jaxbContext;
>>     }
>>
>>     public void setJaxbContext(JAXBContext jaxbContext) {
>>         this.jaxbContext = jaxbContext;
>>     }
>> }
>>
>>
>>
>>
>> import org.mule.umo.UMOEventContext;
>> import org.mule.umo.transformer.TransformerException;
>>
>> import javax.xml.bind.Unmarshaller;
>> import javax.xml.bind.JAXBException;
>> import javax.xml.bind.Marshaller;
>> import java.io.StringReader;
>> import java.io.StringWriter;
>>
>> public class JaxbObjectToXml extends AbstractJaxbTransformer {
>>
>>     public JaxbObjectToXml() {
>>         registerSourceType(Object.class);
>>         setReturnClass(String.class);
>>     }
>>
>>     public Object transform(Object src, String encoding, UMOEventContext
>> context) throws TransformerException {
>>           try {
>>             Marshaller unmarshaller = jaxbContext.createMarshaller();
>>               StringWriter writer = new StringWriter();
>>             unmarshaller.marshal(src,writer);
>>               return writer.toString();
>>         }
>>         catch (JAXBException e) {
>>             throw new TransformerException(this, e);
>>         }
>>
>>
>>     }
>> }
>>
>>
>>
>> import org.mule.umo.UMOEventContext;
>> import org.mule.umo.transformer.TransformerException;
>>
>> import javax.xml.bind.JAXBException;
>> import javax.xml.bind.Unmarshaller;
>> import java.io.StringReader;
>>
>> public class JaxbXmlToObject extends AbstractJaxbTransformer {
>>
>>     public JaxbXmlToObject() {
>>         registerSourceType(String.class);
>>         setReturnClass(Object.class);
>>     }
>>
>>     public Object transform(Object src, String encoding, UMOEventContext
>> context) throws TransformerException {
>>         try {
>>             Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
>>             return unmarshaller.unmarshal(new StringReader((String) src));
>>         }
>>         catch (JAXBException e) {
>>             throw new TransformerException(this, e);
>>         }
>>     }
>>
>> }
>>
>>
>>
>>
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