Newbie Memory Confusion!

[Mustafa Shabib]

Hello,

I'm having problems trying to return my own user defined types and I 
believe it to be due to confusion on my part regarding how memory is 
maintained between client/service. I'll be glad to send the entire WSDL 
though I only provided the key parts for now, to simplify, since this 
message is already really long.

This is how I define my type:

<wsdl:types>
    <xsd:schema 
targetNamespace="http://localhost/axis/TournamentHelper"; 
xmlns:xsd="http://www.w3.org/2001/XMLSchema";>
        <xsd:complexType name="compressionOutput">
            <xsd:sequence>
                <xsd:element name="compressedLen" 
type="xsd:unsignedInt" nillable="false"/>
                <xsd:element name="compressedText" type="xsd:string" 
nillable="true"/>
            </xsd:sequence>
        </xsd:complexType>
    </xsd:schema>
</wsdl:types>

And how I use it:
<wsdl:message name="compressRequest">
      <wsdl:part name="uncompressedText" type="xsd:string"/>
      <wsdl:part name="uncompressedSize" type="xsd:unsignedInt"/>
</wsdl:message>
<wsdl:message name="compressResponse">
    <wsdl:part name="compressedObj" type="intf:compressionOutput"/>
</wsdl:message>

And my port type operation is defined like so:
<wsdl:operation name="compress" parameterOrder="uncompressedText 
uncompressedSize">
      <wsdl:input message="intf:compressRequest" name="compressRequest"/>
      <wsdl:output message="intf:compressResponse" 
name="compressResponse"/>
    </wsdl:operation>

and the binding operation like:

<wsdl:operation name="compress">
      <wsdlsoap:operation soapAction="TournamentHelper#compress"/>
      <wsdl:input name="compressRequest">
        <wsdlsoap:body
        encodingStyle="http://schemas.xmlsoap.org/soap/encoding/";
        namespace="http://localhost/axis/TournamentHelper";
        use="encoded"/>
      </wsdl:input>
      <wsdl:output name="compressResponse">
        <wsdlsoap:body 
encodingStyle="http://schemas.xmlsoap.org/soap/encoding/";
        namespace="http://localhost/axis/TournamentHelper";
        use="encoded"/>
      </wsdl:output>
    </wsdl:operation>
First, my user type generates the following object via the wsdl2ws.jar 
utility:


#include <axis/AxisUserAPI.hpp>
AXIS_CPP_NAMESPACE_USE

/*Local name and the URI for the type*/
static const char* Axis_URI_compressionOutput = 
"http://localhost/axis/TournamentHelper";;
static const char* Axis_TypeName_compressionOutput = "compressionOutput";

class compressionOutput
{
public:
    xsd__unsignedInt compressedLen;
    xsd__string compressedText;
    compressionOutput();
    virtual ~compressionOutput();
};

Then, an operation that can be performed by my webservice returns a 
pointer to an object of this type. Once generated, I fill in the 
operation with some simple code:

compressionOutput* TournamentHelper::compress(xsd__string Value0, 
xsd__unsignedInt Value1)
{
    compressionOutput* retVal = 
(compressionOutput*)malloc(sizeof(compressionOutput));
    retVal->compressedText = NULL;
    retVal->compressedLen = Value1;
    return retVal;
}

When I try to call this operation from a client, the program crashes 
with the following message (edited for clarity)

Debug assertion failed!
...
File: dbgheap.c
Line: 1011
Expression: _CrtIsValidHeapPointer(pUserData)

...

When I call it from my client, I just do:

TournamentHelper t;
t.compress("TEST", 10);

I'm really confused and would love to hear any pointers or shown some 
examples...

Thanks again.
Mustafa