Non-standard (?) Array in return of SOAP-RPC call

[Thomas Bahn <tb...@preussag-systemhaus.de>]

Hi all,

I have a problem with a web service on a SAP Business Connector server, 
which I want to use from Java with Axis. I got an wsdl file with a 
description of this service, which has complex parameters (arrays of 
objects) and a complex return (also some arrays of objects). I used 
WSDL2Java to generate some classes, which I modified to make them work. I 
get the call out and get a return, but Axis cannot "understand" it, giving 
me a fault. 

I cannot register the QName 
{http://www.webmethods.com/2001/10/soap/encoding}data, since it had to be 
used for different classes: EXTENSIONIN and EXTENSIONOUT. The information, 
which class is to be used, is encoded in the tag itself.

How can I handle this? A new deserializer? Can I register the QName in 
another way? Has the Bean-/ArrayDeserializer or the DCI to be modified? Or 
should I make a proxy, which replaces the offending line in the result in 
such a way, that it looks like in the call?

Thanks in advance,
Thomas


Details:

The logged fault:
13400 [main] ERROR org.apache.axis.client.Call  - Exception:
org.xml.sax.SAXException: No deserializer defined for array type 
{http://www.webmethods.com/2001/10/soap/encoding}data
        at 
org.apache.axis.encoding.ser.ArrayDeserializer.onStartElement(ArrayDeserializer.java:254)
        at 
org.apache.axis.encoding.DeserializerImpl.startElement(DeserializerImpl.java:393)
        at 
org.apache.axis.encoding.DeserializationContextImpl.startElement(DeserializationContextImpl.java:870)
        at 
org.apache.axis.message.SAX2EventRecorder.replay(SAX2EventRecorder.java:199)
        at 
org.apache.axis.message.MessageElement.publishToHandler(MessageElement.java:644)
        at 
org.apache.axis.message.RPCElement.deserialize(RPCElement.java:235)
        at 
org.apache.axis.message.RPCElement.getParams(RPCElement.java:259)
        at org.apache.axis.client.Call.invoke(Call.java:1806)
        at org.apache.axis.client.Call.invoke(Call.java:1711)
        at org.apache.axis.client.Call.invoke(Call.java:1251)
        at 
de.preussag_systemhaus.www.KostenstellenBindingStub.holeKostenstellenliste(KostenstellenBindingStub.java:245)
        at WebServiceTest.main(WebServiceTest.java:146)



The problem, as far I understand, is the non-standard (?) return of the 
arrayType:
<EXTENSIONIN SOAP-ENC:arrayType="p1:data[1]" 
xmlns:p1="http://www.webmethods.com/2001/10/soap/encoding">
        <item>
                <VALUEPART1 xsi:type="xsd:string">One</VALUEPART1>
                <VALUEPART2 xsi:type="xsd:string">Two</VALUEPART2>
        </item>
</EXTENSIONIN>
<EXTENSIONOUT SOAP-ENC:arrayType="p1:data[1]" 
xmlns:p1="http://www.webmethods.com/2001/10/soap/encoding">
        <item>
                <VALUEPART1 xsi:type="xsd:string">Three</VALUEPART1>
                <VALUEPART2 xsi:type="xsd:string">Four</VALUEPART2>
        </item>
</EXTENSIONOUT>



In the call the arrays were encoded like this:
<ns2:EXTENSIONIN xsi:type="SOAP-ENC:Array" 
SOAP-ENC:arrayType="ns2:EXTENSIONIN[1]">
        <item>
                <VALUEPART1 xsi:type="xsd:string">1</VALUEPART1>
                <VALUEPART2 xsi:type="xsd:string">2</VALUEPART2>
        </item>
</ns2:EXTENSIONIN>
<ns2:EXTENSIONOUT xsi:type="SOAP-ENC:Array" 
SOAP-ENC:arrayType="ns2:EXTENSIONOUT[1]">
        <item>
                <VALUEPART1 xsi:type="xsd:string">3</VALUEPART1>
                <VALUEPART2 xsi:type="xsd:string">4</VALUEPART2>
        </item>
</ns2:EXTENSIONOUT>



In *BindingStub.java in the constructor(Service):
qName = new 
javax.xml.namespace.QName("http://www.preussag-systemhaus.de/notes-sap-abgleich/kostenstellen", 
"EXTENSIONIN");
cachedSerQNames.add(qName);
cls = de.preussag_systemhaus.www.EXTENSIONIN.class;
cachedSerClasses.add(cls);
cachedSerFactories.add(beansf);
cachedDeserFactories.add(beandf);

qName = new 
javax.xml.namespace.QName("http://www.preussag-systemhaus.de/notes-sap-abgleich/kostenstellen", 
"EXTENSIONOUT");
cachedSerQNames.add(qName);
cls = de.preussag_systemhaus.www.EXTENSIONOUT.class;
cachedSerClasses.add(cls);
cachedSerFactories.add(beansf);
cachedDeserFactories.add(beandf);



In *BindingStub.java in the rpc method I added the parameter:
call.addParameter(
        new javax.xml.namespace.QName("", "EXTENSIONIN"), 
        new 
javax.xml.namespace.QName("http://www.preussag-systemhaus.de/notes-sap-abgleich/kostenstellen", 
"EXTENSIONIN"),
        de.preussag_systemhaus.www.EXTENSIONIN[].class, 
        javax.xml.rpc.ParameterMode.INOUT
);
call.addParameter(
        new javax.xml.namespace.QName("", "EXTENSIONOUT"), 
        new 
javax.xml.namespace.QName("http://www.preussag-systemhaus.de/notes-sap-abgleich/kostenstellen", 
"EXTENSIONOUT"),
        de.preussag_systemhaus.www.EXTENSIONOUT[].class, 
        javax.xml.rpc.ParameterMode.INOUT
);



In the wsdl file they were descripted as following:
...
        <xsd:element ref="EXTENSIONIN" minOccurs="0" 
maxOccurs="unbounded"/>
        <xsd:element ref="EXTENSIONOUT" minOccurs="0" 
maxOccurs="unbounded"/>
...
<xsd:element name="EXTENSIONIN">
        <xsd:complexType>
                <xsd:sequence>
                        <xsd:element name="VALUEPART1" type="xsd:string" 
minOccurs="1" maxOccurs="1"/>
                        <xsd:element name="VALUEPART2" type="xsd:string" 
minOccurs="1" maxOccurs="1"/>
                </xsd:sequence>
        </xsd:complexType>
</xsd:element>
<xsd:element name="EXTENSIONOUT">
        <xsd:complexType>
                <xsd:sequence>
                        <xsd:element name="VALUEPART1" type="xsd:string" 
minOccurs="1" maxOccurs="1"/>
                        <xsd:element name="VALUEPART2" type="xsd:string" 
minOccurs="1" maxOccurs="1"/>
                </xsd:sequence>
        </xsd:complexType>
</xsd:element>



 
THOMAS BAHN
Diplom-Mathematiker
Organisations- und Systemberatung
Preussag
Systemhaus GmbH
 
Lise-Meitner-Str. 25-29
24223 Raisdorf
 
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01 79/9 35 79 16
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tbahn@preussag-systemhaus.de