ADB cannot handle null return value from service method
-------------------------------------------------------
Key: AXIS2-1254
URL: http://issues.apache.org/jira/browse/AXIS2-1254
Project: Apache Axis 2.0 (Axis2)
Issue Type: Bug
Components: databinding
Affects Versions: nightly
Environment: Linux, Java 1.5
Reporter: Dennis Sosnoski
When the response content is an optional element null should be a valid return
value from the corresponding method. I tried this with the following
WSDL/schema fragment:
<element name="getBookResponse">
<complexType>
<sequence>
<element name="book" minOccurs="0" type="tns:BookInformation"/>
</sequence>
</complexType>
</element>
<wsdl:message name="getBookResponse">
<wsdl:part element="wns:getBookResponse" name="parameters"/>
</wsdl:message>
The result was an error on the server side when the corresponding method
returned null:
[java] Exception in thread "main" org.apache.axis2.AxisFault:
java.lang.RuntimeException: book cannot be null!!
[java] at
org.apache.axis2.description.OutInAxisOperationClient.execute(OutInAxisOperation.java:298)
[java] at
com.sosnoski.ws.library.adb.LibraryAdbStub.getBook(LibraryAdbStub.java:340)
[java] at
com.sosnoski.ws.library.adb.WebServiceClient.main(WebServiceClient.java:45)
...
A null return value should be accepted in this case, resulting in an empty
wrapper element (<getBookResponse/>, in this case).
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