Wsdl2ws tool - Axis C++ 1.6beta

Wed, 29 Mar 2006 03:23:52 -0800 

Hi all,
I have a problem with wsdl2ws tool, to be clear with the code it generates. I want to use an array of complex type as output of test web service. Wsdl file is attached below. I would be glad if someone could answer my questions, or at least point to right place where to find answers. 


The structure used as array item is composed from string and integer. 
The wsdl2ws generated class for this structure:


class DirItem
{
public:
        xsd__string     name;
        xsd__int*       size;

        xsd__string getname();
        void setname(xsd__string InValue);

        xsd__int* getsize();
        void setsize(xsd__int* InValue);

        DirItem();
        void reset();
        virtual ~DirItem();
};

Question 1)
Why is the integer here stored using a pointer? (xsd__int* size)


Next question is related to generated client stub. I've written a simple 
client, the code looks like this:


        FileServicePortType ws("http://localhost/axis/FileService";);
        DirItem_Array * dir = ws.getDir("c:\\");
        delete dir;


This code works, but creates a memory leak. As I investigated, 
deserialization of response allocates everything on heap, but it is not 
deleted.


Question 2)
Whats bad with this code? How do it correctly?


Similar situation with server-side. I've written this code as 
implementation of the operation on the server:


DirItem_Array * FileServicePortType::getDir(xsd__string Value0)
{
        DirItem_Array * dir = new DirItem_Array();

        DirItem * item = new DirItem();
        
        char * name = new char[128];
        strcpy(name, "number1");

        int * size = new int(100);

        item->setname(name);
        item->setsize(size);

        dir->addElement(item);

        return dir;
}


Again the code works, but with memory leaks. As you can see, everything 
gets allocated from heap, but when I try to pass there pointers to 
static variables instead of allocated on heap, the service crashes 
because the axis engine later inconsistently creates copies on heap and 
calls inconsistently delete on some of them.


Question 3)
What is the right way to prepare return value from this method?



And finally for the generated service wrapper class (on the server). The 
snippet of code (generated) looks like this:


/*
 * This method wrap the service method
 */
int FileServicePortTypeWrapper::getDir(void* pMsg)
{
        .
        <-- snip -->
        .

        xsd__string v0 = NULL;
        xsd__string value0 = pIWSDZ->getElementAsString("path",0);
        if (value0)
        {
                v0 = new char[ strlen( value0 ) + 1 ];
                strcpy( v0, value0 );
                Axis::AxisDelete( (void *) value0, XSD_STRING);
        }
        if (AXIS_SUCCESS != (nStatus = pIWSDZ->getStatus()))
        {
                return nStatus;
        }
        try
        {
                DirItem_Array * ret = pWs->getDir(v0);

		nStatus = pIWSSZ->addOutputCmplxArrayParam(ret,(void*) 
Axis_Serialize_DirItem, (void*) Axis_Delete_DirItem, (void*) 
Axis_GetSize_DirItem, "getDirReturn", Axis_URI_DirItem);

                delete ret;
                return nStatus;
        }
        catch(...)
        {
                return AXIS_FAIL;
        }
}


Here is taken an input parameter (xsd_string value0). Then its copy is 
created on the heap and value0 is deleted. But the xsd_string v0 is not 
cleaned up, and it produces again a memory leak.


Question 4)
Why is created a copy of value0 on the heap? And why its not deleted later?

Thanks for answers, hope someone will shed light on this.
Petr



I have this testing wsdl:

<?xml version="1.0"?>

<definitions name="fileservice"

targetNamespace="http://unicontrols.cz/";
          xmlns="http://schemas.xmlsoap.org/wsdl/";
     xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/";
      xmlns:xsd="http://www.w3.org/2001/XMLSchema";
  xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/";
      xmlns:tns="http://unicontrols.cz/";
        xmlns:s="http://unicontrols.cz/xsd";
     xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/";>

 <types>

  <schema xmlns="http://www.w3.org/2001/XMLSchema"; 
targetNamespace="http://unicontrols.cz/xsd";>

   <import namespace="http://schemas.xmlsoap.org/soap/encoding/"/>
   <complexType name="ArrayOfDirItem">
    <complexContent>
     <restriction base="soapenc:Array">
      <attribute ref="soapenc:arrayType" wsdl:arrayType="s:DirItem[]"/>
     </restriction>
    </complexContent>
   </complexType>
   <complexType name="DirItem">
    <all>
     <element name="name" type="string"/>
     <element name="size" type="int"/>
    </all>
   </complexType>
  </schema>
 </types>

 <message name="getDirRequest">
  <part name="path" type="xsd:string"/>
 </message>
 <message name="getDirResponse">
  <part name="listing" type="s:ArrayOfDirItem"/>
 </message>

 <portType name="FileServicePortType">
  <operation name="getDir" parameterOrder="path">
   <input message="tns:getDirRequest"/>
   <output message="tns:getDirResponse"/>
  </operation>
 </portType>

 <binding name="FileServiceBinding" type="tns:FileServicePortType">

  <soap:binding style="rpc" 
transport="http://schemas.xmlsoap.org/soap/http"/>

  <operation name="getDir">
   <soap:operation soapAction="fileservice#getDir"/>
   <input>
    <soap:body use="encoded" namespace="http://unicontrols.cz/";
     encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
   </input>
   <output>
    <soap:body use="encoded" namespace="http://unicontrols.cz/";
     encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
   </output>
  </operation>
 </binding>

 <service name="fileservice">
  <port binding="tns:FileServiceBinding" name="FileServicePort">
   <soap:address location="http://localhost/axis/fileservice"/>
  </port>
 </service>

</definitions>














    











					Reply via email to