Deserialization problem for an inner class

[thomas <tb...@entelience.com>]

Hello I have no problem for writing Java clients for "normal" beans 
returned, but, I have a problem with a bean that is an inner class.

So my bean is something like that :
package my.package;
public class FirstClass
{
	...
	
//my inner class
	public class InnerBean
	{
	....
	}
	
}

Note that FirstClass is also a a webservice class, with a method that 
will return an instance of InnerBean.

The wsdd :

<deployment
	name="authentication"
	xmlns="http://xml.apache.org/axis/wsdd/"
	xmlns:java="http://xml.apache.org/axis/wsdd/providers/java"
	xmlns:esis="urn:my.package.FirstClass"
 >
	<service name="Authentication" provider="java:RPC">
		<parameter name="className" value="my.package.FirstClass" />
		<parameter name="allowedMethods" value="*" />

		<namespace>urn:my.package.FirstClass</namespace>
<beanMapping qname="myNS:FirstClass"
			languageSpecificType="java:my.package.FirstClass$InnerBean" />

Now the client :

I declare as usual all the stuff, except for the return type :

QName qn = new QName("urn:my.package.FirstClass","InnerBean");
         
call.registerTypeMapping(my.package.FirstClass.InnerBean.class,qn,
             new 
BeanSerializerFactory(my.package.FirstClass.InnerBean.class,qn),
             new 
BeanDeserializerFactory(my.package.FirstClass.InnerBean.class,qn));
         call.setReturnType(qn);
         FirstClass.InnerBean 
beanReturned=(FirstClass.InnerBean)call.invoke(objectArray);

The problem is that there are no problems server-side, I can watch the 
SOAP message that return what i want.
Client-side, I get an exception :
org.xml.sax.SAXException: Unable to create JavaBean of type 
my.package.FirstClass$InnerBean.  Missing default constructor?  Error 
was: java.lang.InstantiationException: my.package.FirstClass$InnerBean.

(and of course, both classes FirstClass and InnerBean have a default 
constructor).

I don't know where is the problem, in the wsdd, on the client, on the 
server?

Re: Deserialization problem for an inner class

[thomas <tb...@entelience.com>]

Reply to myself, for people that will have the same troubles :
the InnerBean class should be static
On May 2, 2005, at 11:02 AM, thomas wrote:

> Hello I have no problem for writing Java clients for "normal" beans 
> returned, but, I have a problem with a bean that is an inner class.
>
> So my bean is something like that :
> package my.package;
> public class FirstClass
> {
> 	...
> 	
> //my inner class
> 	public class InnerBean
> 	{
> 	....
> 	}
> 	
> }
>
> Note that FirstClass is also a a webservice class, with a method that 
> will return an instance of InnerBean.
>
> The wsdd :
>
> <deployment
> 	name="authentication"
> 	xmlns="http://xml.apache.org/axis/wsdd/"
> 	xmlns:java="http://xml.apache.org/axis/wsdd/providers/java"
> 	xmlns:esis="urn:my.package.FirstClass"
> >
> 	<service name="Authentication" provider="java:RPC">
> 		<parameter name="className" value="my.package.FirstClass" />
> 		<parameter name="allowedMethods" value="*" />
>
> 		<namespace>urn:my.package.FirstClass</namespace>
> <beanMapping qname="myNS:FirstClass"
> 			languageSpecificType="java:my.package.FirstClass$InnerBean" />
>
> Now the client :
>
> I declare as usual all the stuff, except for the return type :
>
> QName qn = new QName("urn:my.package.FirstClass","InnerBean");
>         
> call.registerTypeMapping(my.package.FirstClass.InnerBean.class,qn,
>             new 
> BeanSerializerFactory(my.package.FirstClass.InnerBean.class,qn),
>             new 
> BeanDeserializerFactory(my.package.FirstClass.InnerBean.class,qn));
>         call.setReturnType(qn);
>         FirstClass.InnerBean 
> beanReturned=(FirstClass.InnerBean)call.invoke(objectArray);
>
> The problem is that there are no problems server-side, I can watch the 
> SOAP message that return what i want.
> Client-side, I get an exception :
> org.xml.sax.SAXException: Unable to create JavaBean of type 
> my.package.FirstClass$InnerBean.  Missing default constructor?  Error 
> was: java.lang.InstantiationException: 
> my.package.FirstClass$InnerBean.
>
> (and of course, both classes FirstClass and InnerBean have a default 
> constructor).
>
> I don't know where is the problem, in the wsdd, on the client, on the 
> server?
>