Re: Returning java.util.List in Axis

rf3_at_rocketmail.com
Date: 12/27/04 

Date: 27 Dec 2004 14:58:26 -0800

Here's a little more info on this subject:

I am using apache axis 1.1

Java interface used to generate WSDL.
//**** iDAO.java
import java.util.List;

public interface iDAO {
public List executeQuery(String s);
public int executeUpdate(String s);
}

WSDL file generate by running Java2WSDL using iDAO.class (above)
//****daoservice.wsdl
<?xml version="1.0" encoding="UTF-8"?>
<wsdl:definitions targetNamespace="http://Interface.daopackage"
xmlns:impl="http://Interface.daopackage"
xmlns:intf="http://Interface.daopackage"
xmlns:apachesoap="http://xml.apache.org/xml-soap"
xmlns:wsdlsoap="http://schemas.xmlsoap.org/wsdl/soap/"
xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
xmlns="http://schemas.xmlsoap.org/wsdl/">
<wsdl:message name="executeUpdateResponse">
<wsdl:part name="executeUpdateReturn" type="xsd:int"/>
</wsdl:message>
<wsdl:message name="executeQueryResponse">
<wsdl:part name="executeQueryReturn" type="soapenc:Array"/>
</wsdl:message>
<wsdl:message name="executeQueryRequest">
<wsdl:part name="in0" type="xsd:string"/>
</wsdl:message>
<wsdl:message name="executeUpdateRequest">
<wsdl:part name="in0" type="xsd:string"/>
</wsdl:message>
<wsdl:portType name="iDAO">
<wsdl:operation name="executeQuery" parameterOrder="in0">
<wsdl:input name="executeQueryRequest"
message="impl:executeQueryRequest"/>
<wsdl:output name="executeQueryResponse"
message="impl:executeQueryResponse"/>
</wsdl:operation>
<wsdl:operation name="executeUpdate" parameterOrder="in0">
<wsdl:input name="executeUpdateRequest"
message="impl:executeUpdateRequest"/>
<wsdl:output name="executeUpdateResponse"
message="impl:executeUpdateResponse"/>
</wsdl:operation>
</wsdl:portType>
<wsdl:binding name="DAOServiceSoapBinding" type="impl:iDAO">
<wsdlsoap:binding style="rpc"
transport="http://schemas.xmlsoap.org/soap/http"/>
<wsdl:operation name="executeQuery">
<wsdlsoap:operation soapAction=""/>
<wsdl:input name="executeQueryRequest">
<wsdlsoap:body use="encoded"
encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
namespace="http://Interface.daopackage"/>
</wsdl:input>
<wsdl:output name="executeQueryResponse">
<wsdlsoap:body use="encoded"
encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
namespace="http://Interface.daopackage"/>
</wsdl:output>
</wsdl:operation>
<wsdl:operation name="executeUpdate">
<wsdlsoap:operation soapAction=""/>
<wsdl:input name="executeUpdateRequest">
<wsdlsoap:body use="encoded"
encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
namespace="http://Interface.daopackage"/>
</wsdl:input>
<wsdl:output name="executeUpdateResponse">
<wsdlsoap:body use="encoded"
encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
namespace="http://Interface.daopackage"/>
</wsdl:output>
</wsdl:operation>
</wsdl:binding>
<wsdl:service name="iDAOService">
<wsdl:port name="DAOService"
binding="impl:DAOServiceSoapBinding">
<wsdlsoap:address
location="http://thehost:8082/axis/services/DAOService"/>
</wsdl:port>
</wsdl:service>
</wsdl:definitions>

IDAO.java generated by running WSDL2Java using above WSDL.
/**
* IDAO.java
*
* This file was auto-generated from WSDL
* by the Apache Axis WSDL2Java emitter.
*/

package com.rf3labs.services.dbconn.dao.ws;

public interface IDAO extends java.rmi.Remote {
public java.lang.Object[] executeQuery(java.lang.String in0) throws
java.rmi.RemoteException;
public int executeUpdate(java.lang.String in0) throws
java.rmi.RemoteException;
}

You will notice that the return type of executeQuery method is
java.lang.Object[] rather than what was defined in iDAO.java interface
which is java.util.List.

rf3@rocketmail.com wrote:
> Hi,
>
> When I generate the classes using a WSDL I get a return type of
> Object[] instead of the java.util.List object. From what I understand
> List is serializable.
> Any reason why it is changing the return type to Object[]?
>
> Thanks,
>
> -R

Relevant Pages