Data service invocation fails due to a NPE at client side (Response soap body
is blank)
---------------------------------------------------------------------------------------
Key: WSAS-636
URL: http://wso2.org/jira/browse/WSAS-636
Project: WSO2 WSAS
Issue Type: Bug
Components: data-services
Affects Versions: Nightly
Environment: winxp, jdk15, WSAS-2.2-QAbuild1
Reporter: Charitha Kankanamge
Assigned To: sumedha rubasinghe
Priority: Blocker
I couldn't invoke a simple data service either with REST or generated stub.
- The sample data service configuration is as follows.
<data name="Employeedataservice">
<config>
<property name="org.wso2.ws.dataservice.driver">com.mysql.jdbc.Driver</property>
<property
name="org.wso2.ws.dataservice.protocol">jdbc:mysql://localhost:3306/EmployeeDB</property>
<property name="org.wso2.ws.dataservice.user">root</property>
<property name="org.wso2.ws.dataservice.password">root</property>
</config>
<query id="Mtlaviniaemployees">
<result element="employees" rowName="employee">
<element name="name" column="name" />
<element name="id" column="id" />
<element name="address" column="address" />
</result>
</query>
<operation name="getMtLaviniaEmployees">
<call-query href="Mtlaviniaemployees" />
</operation>
</data>
- Deploy this service in WSAS and generate ADB client
- Write a client
public class Client {
public static void main(String[] args) throws AxisFault {
EmployeedataserviceStub stub = new
EmployeedataserviceStub("http://127.0.0.1:9763/services/Employeedataservice";);
EmployeedataserviceStub.GetMtLaviniaEmployees req = new
EmployeedataserviceStub.GetMtLaviniaEmployees();
try {
EmployeedataserviceStub.Employees res =
stub.getMtLaviniaEmployees(req);
System.out.println(res.getEmployee()[0]);
} catch (RemoteException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
- Run the client
following exception will be thrown at client side.
org.apache.axis2.AxisFault
at org.apache.axis2.AxisFault.makeFault(AxisFault.java:417)
at
org.wso2.wsas.client.EmployeedataserviceStub.fromOM(EmployeedataserviceStub.java:2210)
at
org.wso2.wsas.client.EmployeedataserviceStub.getMtLaviniaEmployees(EmployeedataserviceStub.java:178)
at Client.main(Client.java:14)
Caused by: java.lang.NullPointerException
at
org.wso2.wsas.client.EmployeedataserviceStub.fromOM(EmployeedataserviceStub.java:2204)
... 2 more
====================================================================================================================================
Soap request
-------------------
<?xml version='1.0' encoding='UTF-8'?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/";>
<soapenv:Body>
<ns1:getMtLaviniaEmployees xmlns:ns1="http://ws.wso2.org/dataservice";
/>
</soapenv:Body>
</soapenv:Envelope>
Soap response
----------------------
<?xml version='1.0' encoding='UTF-8'?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/";>
<soapenv:Body />
</soapenv:Envelope>
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