Java client array encoding causes troubles for AxisCPP service

["Jonathan G Beakley (beakley)" <be...@cisco.com>]

I have noticed an inconsistency in the encoding of arrays by Axis Java
clients (created using WSDL2Java) and AxisCPP clients (created using
WSDL2Ws), and I was hoping someone could give me some advice.

In short, I have the following RPC/encoded WSDL snippet that defines the
array:

  <types>
    <schema xmlns="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://localhost/axis/csaapi/xsd">
      <import namespace = "http://schemas.xmlsoap.org/soap/encoding/"/>
      <complexType name="ArrayOfInt">
        <complexContent>
            <restriction base="soapenc:Array">
              <attribute ref="soapenc:arrayType"
wsdl:arrayType="int[]"/>
            </restriction>
        </complexContent>
      </complexType>
    </schema>
  </types>

When I create and run the AxisCPP client, it generates XML that uses
"<item>" to denote the elements in the array:

  <SOAP-ENV:Body>
    <ns1:GetNamesByIds
        xmlns:ns1="http://localhost/axis/csaapi">
      <objType xsi:type="xsd:int">0</objType>
      <idsArray
          xmlns:enc="http://www.w3.org/2001/06/soap-encoding"
          enc:arrayType="xsd:int[9]">
        <item>1</item>
        <item>2</item>
        <item>3</item>
      </idsArray>
    </ns1:GetNamesByIds>
  </SOAP-ENV:Body>

My AxisCPP service handles this just fine.

BUT, my Java client generates XML that doesn't use the "<item>"
construct, and it causes my CPP service to fail to parse the data.
Here's the Java XML:

  <soapenv:Body>
    <ns1:GetNamesByIds
 
soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
        xmlns:ns1="http://localhost/axis/csaapi">
      <objType xsi:type="xsd:int">0</objType>
      <ids soapenc:arrayType="xsd:int[9]"
            xsi:type="soapenc:Array"
            xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/">
        <ids xsi:type="xsd:int">1</ids>
        <ids xsi:type="xsd:int">2</ids>
        <ids xsi:type="xsd:int">3</ids>
      </ids>
    </ns1:GetNamesByIds>
  </soapenv:Body>

Could someone give me advice on the best way to handle this?  Note that
I've already turned the MULTIREF option off to fix a different set of
problems.  I'd prefer to keep the RPC/Encoded style if at all possible.

Thank you very much in advance!

-Jonathan Beakley
beakley@cisco.com

Re: Java client array encoding causes troubles for AxisCPP service

[Adrian Dick <ad...@uk.ibm.com>]

Hi,

Handling of arrays for rpc/encoded web services is a suprisingly complex
problem.  The SOAP spec provides several different, but apparently
equivalent, techniques.  One of which is that employed by Axis C++
serialiation, another of which is that used by Axis Java.

Regrettably, it would appear the AxisCPP deserializer doesn't handle all
the variations.

Can you raise a Jira issue for this, including the SOAP messages you give
below.

Regards,
Adrian
_______________________________________
Adrian Dick (adrian.dick@uk.ibm.com)


"Jonathan G Beakley \(beakley\)" <be...@cisco.com> wrote on 20/03/2006
15:54:59:

> I have noticed an inconsistency in the encoding of arrays by Axis Java
> clients (created using WSDL2Java) and AxisCPP clients (created using
> WSDL2Ws), and I was hoping someone could give me some advice.
>
> In short, I have the following RPC/encoded WSDL snippet that defines the
> array:
>
>   <types>
>     <schema xmlns="http://www.w3.org/2001/XMLSchema"
> targetNamespace="http://localhost/axis/csaapi/xsd">
>       <import namespace = "http://schemas.xmlsoap.org/soap/encoding/"/>
>       <complexType name="ArrayOfInt">
>         <complexContent>
>             <restriction base="soapenc:Array">
>               <attribute ref="soapenc:arrayType"
> wsdl:arrayType="int[]"/>
>             </restriction>
>         </complexContent>
>       </complexType>
>     </schema>
>   </types>
>
> When I create and run the AxisCPP client, it generates XML that uses
> "<item>" to denote the elements in the array:
>
>   <SOAP-ENV:Body>
>     <ns1:GetNamesByIds
>         xmlns:ns1="http://localhost/axis/csaapi">
>       <objType xsi:type="xsd:int">0</objType>
>       <idsArray
>           xmlns:enc="http://www.w3.org/2001/06/soap-encoding"
>           enc:arrayType="xsd:int[9]">
>         <item>1</item>
>         <item>2</item>
>         <item>3</item>
>       </idsArray>
>     </ns1:GetNamesByIds>
>   </SOAP-ENV:Body>
>
> My AxisCPP service handles this just fine.
>
> BUT, my Java client generates XML that doesn't use the "<item>"
> construct, and it causes my CPP service to fail to parse the data.
> Here's the Java XML:
>
>   <soapenv:Body>
>     <ns1:GetNamesByIds
>
> soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
>         xmlns:ns1="http://localhost/axis/csaapi">
>       <objType xsi:type="xsd:int">0</objType>
>       <ids soapenc:arrayType="xsd:int[9]"
>             xsi:type="soapenc:Array"
>             xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/">
>         <ids xsi:type="xsd:int">1</ids>
>         <ids xsi:type="xsd:int">2</ids>
>         <ids xsi:type="xsd:int">3</ids>
>       </ids>
>     </ns1:GetNamesByIds>
>   </soapenv:Body>
>
> Could someone give me advice on the best way to handle this?  Note that
> I've already turned the MULTIREF option off to fix a different set of
> problems.  I'd prefer to keep the RPC/Encoded style if at all possible.
>
> Thank you very much in advance!
>
> -Jonathan Beakley
> beakley@cisco.com