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Date: Wed, 27 Sep 2006 21:53:50 -0700 (PDT)
From: "Dennis Sosnoski (JIRA)" <jira@apache.org>
To: axis-dev@ws.apache.org
Subject: [jira] Updated: (AXIS2-1254) ADB cannot handle null return value
 from service method
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     [ http://issues.apache.org/jira/browse/AXIS2-1254?page=all ]

Dennis Sosnoski updated AXIS2-1254:
-----------------------------------

    Attachment: bug.zip

The zip contains a full Ant build. To use it, change the build.properties line to the appropriate Axis2 installation directory on your system.

> 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
>         Attachments: bug.zip
>
>
> 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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