Problem with Polymorphic data types with ADB stubs on client side and RPC*MessageReceiver on Server side.

[Rahul Miglani]

Hi,

 

I have an existing spring framework based Java application where-in the
services were exposed as web services using Axis 1.3. Now we are
migrating the same to Axis2 1.4.1. 

I have used the RPC*MessageReceiver classes for my MEPs and instead of
service implementation class parameter "SeviceClass" I am using the
"ServiceObjectSupplier" and the "SpringBeanName" parameters in the
services.xml file to describe my service.

 

On the client side I am using the ADB stubs. When I encounter any
polymorphic data here i.e. if the client is sending a polymorphic data
type as a parameter, the RPC*MessageReceiver class is not able to
de-serialize the exact derived object instead it creates an object of
the base class, resulting in data loss. 

 

Actually the problem comes in the BeanUtil class's deserailize() method.
A fix is already mentioned there for issues AXIS2-2055 and AXIS2-1899 to
support polymorphism in POJO approach. The code expects that a "type"
attribute should be mentioned with a value as the fully qualified class
name of the actual type object whereas if we are using ADB stubs on the
client side then the request XML contains the "type" attribute with a
namespace as http://www.w3.org/2001/XMLSchema-instance and the value as
just the class name, the package name is not sent. So the code mentioned
here fails.

 

I have added a workaround for the problem and am attaching the file
modified along with the mail. Changes are in the BeanUtil.java file.
Also a new file has been added by name BeanClassMapper.java which
expects a "Namespace2PackageMapping.properties" file in the classpath
that contains the mapping between the fully qualified java classes and
the namespace qualified object name as is received in the SOAP request.
Example properties file is also attached.

 

Please suggest if the code is correct or if there is some other way of
achieving the desired result. 

 

Thanks and Regards,

Rahul Miglani

Quark Media House.

BeanUtil.java
Description: BeanUtil.java

BeanClassMapper.java
Description: BeanClassMapper.java

Namespace2PackageMapping.properties
Description: Namespace2PackageMapping.properties