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From "Dimuthu Gamage" <dimut...@gmail.com>
Subject Re: forward declaration in generated adb files causes a C++ error
Date Fri, 05 Sep 2008 01:37:21 GMT
Hi Tammy,

I m not sure this time your suggestion is a valid one.

Just check this header,
https://svn.apache.org/repos/asf/webservices/axis2/trunk/c/axiom/include/axiom_attribute.h

and the source file,
https://svn.apache.org/repos/asf/webservices/axis2/trunk/c/axiom/src/om/om_attribute.c

which is the model we should follow in our generated code. There the typedef
is done inside the header and the struct declaration is in source. So can
you please let us know the error you are getting in this approach? and your
platform?

In a case you still want to move the struct to the header (it is not a much
recomandad approach in c programming), Check the struct declration in the
CADBBeanTemplateSource and move that block to CADBBeanTemplateHeader. And
you can pack them in the axis2-adb-codegen-xxx.Jar and put in the axis2 java
lib directory to load the new library.

Thanks
Dimuthu




On Fri, Sep 5, 2008 at 6:20 AM, Tammy Martin <tammymartincali@gmail.com>wrote:

> Hello Dimuthu,
>
> Sorry for the delay in response...I tried your fix but unfortunately it did
> not work for me.
>
> It appears that the structure definition and the typedef need to be in the
> header file in order for the C++ to compile...
> Like this:
>
>
> #include <stdio.h>
> #include <axiom.h>
> #include <axis2_util.h>
> #include <axiom_soap.h>
> #include <axis2_client.h>
>
> struct adb_return
> {
>   axutil_qname_t* qname;
>   axis2_char_t* property_return;
>   axis2_bool_t is_valid_return;
> };
> /**
>    *  adb_return class
>    */
> typedef struct adb_return adb_return_t;
>
> #ifdef __cplusplus
>   extern "C"
>         {
>  #endif
>
> And there can be NO structure definition in the generated .c file other
> wise it is duplicated...
>
> It doesn't seem to matter if it is in the extern "C" declaration or not..
>
> I am getting these errors because I am including the adb_return.h inside my
> C++ code. and then I get errors regarding a forward declaraion of struct
> adb_return...
>
> error: invalid use of undefined type `struct adb_return'
>
> error: forward declaration of `struct adb_return'
>
> I am trying to fix this by modifying the CADBBeanTemplateHeader.xsl and
> CADBBeanTemplateSource.xsl any help you could provide would be greatly
> appreciated.
>
> If there are any other workarounds for this error, compiler flags or
> anything I may be missing, please let me know.
>
> Thanks,
>
> Tammy
>
> On 8/25/08, Dimuthu Gamage <dimuthuc@gmail.com> wrote:
>>
>> Hi,
>> Yea it is a bug, and i just fixed it in the SVN. In fact you can fix it
>> without needing to compile the source.
>> extract the adb-codegen-*.jar and  check
>> "org/apache/axis2/schema/template/CADBBeanTemplateHeader.xsl" for a
>> template.
>>
>>
>> Thanks
>> Dimuthu
>>
>>
>> On Thu, Aug 21, 2008 at 12:28 PM, Tammy Martin <tammymartincali@gmail.com
>> > wrote:
>>
>>> Hello,
>>>
>>> I am using axis2c 1.3.0 and axis2 1.4 and used the wsdl2c.sh tool to
>>> generate (adb) axis data bindings from a wsdl. I am using these data
>>> bindings in a C++ program. When I compile on Linux I get the following
>>> error:
>>>
>>> error: forward declaration of `struct adb_return'
>>>
>>> this is what it looks like in the header file...it is outside of the
>>> extern 'C" declaration.
>>>
>>>  typedef struct adb_return adb_return_t;
>>>
>>> In order to get this to compile I have to change it to: (which I placed
>>> inside of the extern "C" declaration.
>>>
>>>  /**
>>>         *  adb_return class
>>>         */
>>>         typedef struct {
>>>           axutil_qname_t* qname;
>>>        axis2_char_t* property_return;
>>>        axis2_bool_t is_valid_return;
>>>         } adb_return_t;
>>>
>>> My question is this, how can I get axis2c to generate databindings that I
>>> do not have to manipulate manually in order to compile. Is there an option I
>>> am missing on the wsdl2c generation or is there a bug fix that I can obtain?
>>>
>>> Thanks for your help,
>>> Tammy
>>>
>>
>>
>


-- 
Thanks,
Dimuthu Gamage

http://www.dimuthu.org
http://www.wso2.org

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