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https://issues.apache.org/jira/browse/AXIS2-4446?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13012059#comment-13012059
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abdurrehim dagdelen commented on AXIS2-4446:
--------------------------------------------
I have the same problem
if you have solution please help me
> Serviceclient problem invoking operations which have extended classes as
> parameters
> -----------------------------------------------------------------------------------
>
> Key: AXIS2-4446
> URL: https://issues.apache.org/jira/browse/AXIS2-4446
> Project: Axis2
> Issue Type: Bug
> Components: client-api
> Affects Versions: 1.4.1
> Environment: Windows
> Reporter: Banu Maheswari
>
> Hi,
> When I try to invoke a webservice which takes as argument, an extended class,
> then it is returning the following error.
> org.apache.axiom.om.OMException: java.lang.NullPointerException
> at
> org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:249)
> at
> org.apache.axiom.om.impl.llom.OMNodeImpl.build(OMNodeImpl.java:327)
> at
> org.apache.axiom.om.impl.llom.OMElementImpl.build(OMElementImpl.java:706)
> at
> org.apache.axiom.om.impl.llom.OMElementImpl.detach(OMElementImpl.java:675)
> at
> org.apache.axiom.om.impl.llom.OMNodeImpl.setParent(OMNodeImpl.java:124)
> at
> org.apache.axiom.om.impl.llom.OMElementImpl.addChild(OMElementImpl.java:274)
> at
> org.apache.axiom.om.impl.llom.OMElementImpl.addChild(OMElementImpl.java:203)
> at
> org.apache.axiom.soap.impl.llom.SOAPBodyImpl.addChild(SOAPBodyImpl.java:231)
> at
> org.apache.axis2.client.ServiceClient.fillSOAPEnvelope(ServiceClient.java:713)
> at
> org.apache.axis2.client.ServiceClient.sendReceive(ServiceClient.java:545)
> at
> org.apache.axis2.client.ServiceClient.sendReceive(ServiceClient.java:528)
> at
> org.apache.axis2.rpc.client.RPCServiceClient.invokeBlocking(RPCServiceClient.java:102)
> I have a User class {username, password} and a Master class which extends
> User class { address, accountType} in my webservice app.
> In my client application when i call serviceClient.invokeBlocking(operation,
> args.toArray(), returnTypes), where I pass Master class object as one of
> args, then I get the above error.
> However when I remove the "extends User" from Master class and put all fields
> in Master class directly, when I invoke the same operation it works fine
> without any issue.
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