[jira] Commented: (AXIS2-2309) Unnecessary WebServiceException if parameter is null

["Rich Scheuerle (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/AXIS2-2309?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12480134 ] 

Rich Scheuerle commented on AXIS2-2309:
---------------------------------------

Background:

A doc/lit base parameter is always represented by a root element.

Root elements cannot have occurrence attributes (i.e. minOccurs=0) per the XML Schema specification.

Thus java null must be represented by an element with a xsi:nill=true attribute.
Example:
   <foo xsi:nil="true" />

-------------------------------
This issue will be used to 
  1) Make sure that the JAX-WS layer supports null java objects for doc/lit bare parameters.
  2) Make sure that the JAX-WS marshalling code correctly sends the null using xsi:nil.
  3) Make sure that the JAX-WS unmarshalling code accurate receives and processes null values.

Thanks Dims for the heads up.  This may take a few days to assess.

> Unnecessary WebServiceException if parameter is null
> ----------------------------------------------------
>
>                 Key: AXIS2-2309
>                 URL: https://issues.apache.org/jira/browse/AXIS2-2309
>             Project: Axis 2.0 (Axis2)
>          Issue Type: Bug
>            Reporter: Davanum Srinivas
>         Assigned To: Rich Scheuerle
>         Attachments: my.diff
>
>
> Around line 280 in src/org/apache/axis2/jaxws/marshaller/impl/alt/DocLitBareMethodMarshaller.java, there is a check for null value and a WebServiceException is thrown. There is a comment just before this code that says the following.
> =====================================================================================
>              // TODO This needs more work.  We need to check inside holders of input params.  We also
>              // may want to exclude header params from this check
>              //Validate input parameters for operation and make sure no input parameters are null.
>             //As per JAXWS Specification section 3.6.2.3 if a null value is passes as an argument
>             //to a method then an implementation MUST throw WebServiceException.
> =====================================================================================
> *BUT* this is not correct reading of the jaxws 2.0 spec (Page 39) says the following:
> =====================================================================================
> Due to the limitations described in section 5.3.1 of theWS-I Basic Profile specification (see [8]), null values
> cannot be used as method arguments or as the return value from a method which uses the rpc/literal binding.
> } 
> Conformance (Null Values in rpc/literal): If a null value is passed as an argument to amethod, or returned
> from amethod, that uses the rpc/literal style, then an implementation MUST throw a WebServiceException.
> =====================================================================================
> So the WebServiceException for null parameters is not applicable to doc/lit/bare. it's required only for rpc/lit.
> thanks,
> dims

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