Error with WebServices and object hierarchy

Question

Hello,
I'm using Web Services (deployed on Axis Server) with SJC. SJC don't understood the object hierarchy. It's seem to be the same problem than in post http://forum.sun.com/jive/thread.jspa?forumID=123&threadID=50290 and
http://forum.sun.com/jive/thread.jspa?forumID=123&threadID=52967.
I have 3 classes.
GrandSon
Son with an array of GrandSon
Father with an array of Son
The class :
Father :
package test;
public class Father {
     private Son[] theSons;
     public Father()
          theSons = new Son[2];
          theSons[0] = new Son();
          theSons[1] = new Son();
     public Son[] getSons()
          return theSons;
Son :
package test;
public class Son {
     private String name = "Son";
     private GrandSon[] grandSons;
     public Son()
          grandSons = new GrandSon[2];
          grandSons[0] = new GrandSon();
          grandSons[1] = new GrandSon();
     public String getName()
          return name;
     public GrandSon[] getGrandSons()
          return grandSons;
GrandSon
package test;
public class GrandSon {
     String name;
     public String getName()
          return "I'm a Grandson";
I'm creating the webService from Father JavaBean. Here is the WSDL file generated by wtp plugin for Eclipse :
<?xml version="1.0" encoding="UTF-8"?>
<wsdl:definitions targetNamespace="http://test" xmlns:apachesoap="http://xml.apache.org/xml-soap" xmlns:impl="http://test" xmlns:intf="http://test" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:wsdlsoap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<!--WSDL created by Apache Axis version: 1.3
Built on Oct 05, 2005 (05:23:37 EDT)-->
<wsdl:types>
<schema elementFormDefault="qualified" targetNamespace="http://test" xmlns="http://www.w3.org/2001/XMLSchema">
<element name="getSons">
<complexType/>
</element>
<element name="getSonsResponse">
<complexType>
<sequence>
<element maxOccurs="unbounded" name="getSonsReturn" type="impl:Son"/>
</sequence>
</complexType>
</element>
<complexType name="GrandSon">
<sequence>
<element name="name" nillable="true" type="xsd:string"/>
</sequence>
</complexType>
<complexType name="ArrayOfGrandSon">
<sequence>
<element maxOccurs="unbounded" minOccurs="0" name="item" type="impl:GrandSon"/>
</sequence>
</complexType>
<complexType name="Son">
<sequence>
<element name="grandSons" nillable="true" type="impl:ArrayOfGrandSon"/>
<element name="name" nillable="true" type="xsd:string"/>
</sequence>
</complexType>
</schema>
</wsdl:types>
<wsdl:message name="getSonsRequest">
<wsdl:part element="impl:getSons" name="parameters"/>
</wsdl:message>
<wsdl:message name="getSonsResponse">
<wsdl:part element="impl:getSonsResponse" name="parameters"/>
</wsdl:message>
<wsdl:portType name="Father">
<wsdl:operation name="getSons">
<wsdl:input message="impl:getSonsRequest" name="getSonsRequest"/>
<wsdl:output message="impl:getSonsResponse" name="getSonsResponse"/>
</wsdl:operation>
</wsdl:portType>
<wsdl:binding name="FatherSoapBinding" type="impl:Father">
<wsdlsoap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
<wsdl:operation name="getSons">
<wsdlsoap:operation soapAction=""/>
<wsdl:input name="getSonsRequest">
<wsdlsoap:body use="literal"/>
</wsdl:input>
<wsdl:output name="getSonsResponse">
<wsdlsoap:body use="literal"/>
</wsdl:output>
</wsdl:operation>
</wsdl:binding>
<wsdl:service name="FatherService">
<wsdl:port binding="impl:FatherSoapBinding" name="Father">
<wsdlsoap:address location="http://localhost:8080/webServiceSimple/services/Father"/>
</wsdl:port>
</wsdl:service>
</wsdl:definitions>
When I try to call my Web Service in Sun Java Creator, I have this error message :
InvocationTargetException com.sun.rave.websvc.ui.ReflectionHelper.callMethodWithParams(ReflectionHelper.java:459)
com.sun.rave.websvc.ui.TestWebServiceMethodDlg$MethodTask.run(TestWebServiceMethodDlg.java:1031)
java.lang.Thread.run(Thread.java:595)
null sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
java.lang.reflect.Method.invoke(Method.java:585) com.sun.rave.websvc.ui.ReflectionHelper.callMethodWithParams(ReflectionHelper.java:450)
com.sun.rave.websvc.ui.TestWebServiceMethodDlg$MethodTask.run(TestWebServiceMethodDlg.java:1031)
java.lang.Thread.run(Thread.java:595)
deserialization error: unexpected XML reader state. expected: END but found: START
Runtime exception; nested exception is: deserialization error: unexpected XML reader state. expected: END but found: START: {http://test}grandSons
com.sun.xml.rpc.client.StreamingSender._handleRuntimeExceptionInSend(StreamingSender.java:318)
com.sun.xml.rpc.client.StreamingSender._send(StreamingSender.java:300)
webservice.Father_Stub.getSons(Father_Stub.java:68)
webservice.fatherservice.FatherServiceClient.getSons(FatherServiceClient.java:29)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) java.lang.reflect.Method.invoke(Method.java:585)
com.sun.rave.websvc.ui.ReflectionHelper.callMethodWithParams(ReflectionHelper.java:450) com.sun.rave.websvc.ui.TestWebServiceMethodDlg$MethodTask.run(TestWebServiceMethodDlg.java:1031)
java.lang.Thread.run(Thread.java:595)
deserialization error: unexpected XML reader state. expected: END but found: START: {http://test}grandSons
com.sun.xml.rpc.encoding.literal.LiteralObjectSerializerBase.deserialize(LiteralObjectSerializerBase.java:128) webservice.Son_LiteralSerializer.doDeserialize(Son_LiteralSerializer.java:54)
com.sun.xml.rpc.encoding.literal.LiteralObjectSerializerBase.internalDeserialize(LiteralObjectSerializerBase.java:216)
com.sun.xml.rpc.encoding.literal.LiteralObjectSerializerBase.deserialize(LiteralObjectSerializerBase.java:124)
webservice.GetSonsResponse_LiteralSerializer.doDeserialize(GetSonsResponse_LiteralSerializer.java:53)
com.sun.xml.rpc.encoding.literal.LiteralObjectSerializerBase.internalDeserialize(LiteralObjectSerializerBase.java:216)
com.sun.xml.rpc.encoding.literal.LiteralObjectSerializerBase.deserialize(LiteralObjectSerializerBase.java:124)
webservice.Father_Stub._deserialize_getSons(Father_Stub.java:115)
webservice.Father_Stub._readFirstBodyElement(Father_Stub.java:102)
com.sun.xml.rpc.client.StreamingSender._send(StreamingSender.java:215)
webservice.Father_Stub.getSons(Father_Stub.java:68)
webservice.fatherservice.FatherServiceClient.getSons(FatherServiceClient.java:29)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) java.lang.reflect.Method.invoke(Method.java:585)
com.sun.rave.websvc.ui.ReflectionHelper.callMethodWithParams(ReflectionHelper.java:450)
com.sun.rave.websvc.ui.TestWebServiceMethodDlg$MethodTask.run(TestWebServiceMethodDlg.java:1031)
java.lang.Thread.run(Thread.java:595)
The SOAP communication seems to be correct. I'm sniffing the communication channel:
Request from SJC:
POST /webServiceSimple/services/Father HTTP/1.1
Content-Type: text/xml; charset=utf-8
Content-Length: 335
SOAPAction: ""
Cache-Control: no-cache
Pragma: no-cache
User-Agent: Java/1.5.0_06
Host: 127.0.0.1:8081
Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
Connection: keep-alive
<?xml version="1.0" encoding="UTF-8"?>
<env:Envelope xmlns:env="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:enc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:ns0="http://test"><env:Body><ns0:getSons/></env:Body></env:Envelope>
Response from AXIS ( I have corrected text indentation) :
HTTP/1.1 200 OK
Content-Type: text/xml;charset=utf-8
Transfer-Encoding: chunked
Date: Thu, 24 Aug 2006 12:44:27 GMT
Server: Apache-Coyote/1.1
292
<?xml version="1.0" encoding="utf-8"?><soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<soapenv:Body><getSonsResponse xmlns="http://test">
<getSonsReturn>
<grandSons>
<grandSons>
<name>I'm a Grandson</name>
</grandSons>
<grandSons>
<name>I'm a Grandson</name>
</grandSons>
</grandSons>
<name>Fils</name>
</getSonsReturn>
<getSonsReturn>
<grandSons>
<grandSons>
<name>I'm a Grandson</name>
</grandSons>
<grandSons>
<name>I'm a Grandson</name>
</grandSons>
</grandSons>
<name>Fils</name>
</getSonsReturn>
</getSonsResponse>
</soapenv:Body></soapenv:Envelope>
0
I suppose that the version of SOAP used in AXIS and in SJSC may be different. Array's definition have been changed in version SOAP 1.2.
Here an array is described like this :
<grandSons> <- ARRAY
<grandSons> <-OBJECT : ARRAY[0]
</grandSons>
<grandSons><-OBJECT : ARRAY[1]
</grandSons>
</grandSons>
Probably explains this message :
deserialization error: unexpected XML reader state. expected: END but found: START: item
Somebody have an idea ?
Thanks.

Answer 1

Hi Frank,
I've checked further, and for testing, I have made a change to the sample Reference Cursor package code (NVL'd the parameter), but I still get the same error:
CREATE OR REPLACE PACKAGE BODY RefCursorExample IS
  FUNCTION get_requests_for_tech(p_email VARCHAR2) RETURN ref_cursor IS
    the_cursor ref_cursor;
  BEGIN
    OPEN the_cursor FOR
      SELECT sr.svr_id, sr.status, sr.problem_description
        FROM service_requests sr, users u
     WHERE sr.assigned_to = u.user_id
       AND u.email = NVL(p_email,u.email);
    RETURN the_cursor;
  END get_requests_for_tech;
  FUNCTION count_requests_for_tech(p_email VARCHAR2) RETURN NUMBER IS
    the_count NUMBER;
  BEGIN
    SELECT COUNT(*)
      INTO the_count
      FROM service_requests sr, users u
     WHERE sr.assigned_to = u.user_id
       AND u.email = NVL(p_email,u.email);
    RETURN the_count;
  END count_requests_for_tech;
END RefCursorExample;My issue is that it works with NULL for the parameter in the Business Component Browser (BCB), but when I get to the JSF ExecuteWithParams the application looks like it expects NOT NULL when NULL should work. Is there a way to trace where this is happening? Since the BCB works, can I assume it is the JSF side that is causing this? I have already turned on my logging to FINE in logging.properties, and I can't seem to find why this is being triggered...
java.util.logging.ConsoleHandler.level = FINE
com.sun.faces.level=FINE
Thanks!
Kenton