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https://issues.apache.org/jira/browse/OLINGO-492?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Bolz reassigned OLINGO-492:
-----------------------------------
Assignee: Michael Bolz
> Custom ODataErrorCallback is not called when ODataServlet is used
> -----------------------------------------------------------------
>
> Key: OLINGO-492
> URL: https://issues.apache.org/jira/browse/OLINGO-492
> Project: Olingo
> Issue Type: Bug
> Components: odata2-core
> Affects Versions: V2 2.0.1
> Reporter: Vitali Yarmolik
> Assignee: Michael Bolz
>
> We have an OData service which has custom implementation of
> {{ODataErrorCallback}} for service-specific error handling. In order to
> remove CXF dependencies we decided to use the recently introduced
> {{ODataServlet}} instead of {{CXFNonSpringJaxrsServlet}} in web.xml. After
> that I noticed that our custom error callback is not called in some cases.
> Looking into the source code of the library I can name the following reasons
> for that:
> # When an instance of {{ODataException}} is thrown during the call of
> {{ODataServiceFactory.createService(ODataContext)}} method, the exception is
> caught in {{ODataServlet.handleRequest(HttpServletRequest, ODataHttpMethod,
> HttpServletResponse)}} method. In this case,
> {{org.apache.olingo.odata2.core.*servlet*.ODataExceptionWrapper}} class is
> used for the exception handling. The problem is that this class does not use
> the custom error callback implementation in its
> {{wrapInExceptionResponse(Exception)}} method.
> # In case an exception other than {{ODataException}} is thrown in
> {{ODataServlet.handleRequest(HttpServletRequest, ODataHttpMethod,
> HttpServletResponse)}} method (e.g. RuntimeException or an
> application-specific exception), it will not be caught in the
> {{handleRequest}} method at all. As a result, the exception will be handled
> by the web server and the HTTP response will not be formatted according to
> the OData specification. Obviously, the custom OData error callback is not
> called in this case either.
> The custom OData error callback is used fine in both the aforementioned
> situations in case {{CXFNonSpringJaxrsServlet}} is specified in web.xml.
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