How do/should I use arrays of complex types in a WebService?

From:
 junk@davidbevan.co.uk
Newsgroups:
comp.lang.java.programmer,ibm.software.websphere.studio,ibm.software.websphere.studio.web-services
Date:
Thu, 26 Jul 2007 09:09:41 -0700
Message-ID:
<1185466181.937929.181560@k79g2000hse.googlegroups.com>
Im having a play with WebServices using IBM RAD 6 as my IDE.

I can get webservices to work ok when the message is a wrapper
containing Strings, ints, and arrays of Strings or ints, but as soon
as I try to use an array of complex types it fails.

The way it fails is that it says the array is an array of
'xsd:anyType' whereas I would expect something like 'impl:mytype'
where mytype would then have 'complexType' entry which would explain
that its just a String and an Int (for example)

Can anyone tell me how I should structure a message object to contain
arrays of wrapper classes? - or any neat tricks to avoid needing
arrays of wrapper classes.

Many Thanks

David Bevan
http://www.davidbevan.co.uk

Heres some wsdl....

<?xml version="1.0" encoding="UTF-8"?>
<wsdl:definitions targetNamespace="http://
helloworld.services.jjs.xxxxxxxxx.com" xmlns:impl="http://
helloworld.services.jjs.xxxxxxxxx.com" xmlns:intf="http://
helloworld.services.jjs.xxxxxxxxx.com" xmlns:wsdl="http://
schemas.xmlsoap.org/wsdl/" xmlns:wsdlsoap="http://schemas.xmlsoap.org/
wsdl/soap/" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
 <wsdl:types>
  <schema targetNamespace="http://
helloworld.services.jjs.xxxxxxxxx.com" xmlns="http://www.w3.org/2001/
XMLSchema" xmlns:impl="http://helloworld.services.jjs.xxxxxxxxx.com"
xmlns:intf="http://helloworld.services.jjs.xxxxxxxxx.com"
xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:xsd="http://
www.w3.org/2001/XMLSchema">
   <complexType name="HelloWorld8Msg">
    <complexContent>
     <extension base="impl:AbstractHelloWorld8Msg">
      <sequence>
       <element name="name" nillable="true" type="xsd:string"/>
      </sequence>
     </extension>
    </complexContent>
   </complexType>
   <complexType name="AbstractHelloWorld8Msg">
    <sequence>
     <element maxOccurs="unbounded" name="myArray" nillable="true"
type="xsd:string"/>
    </sequence>
   </complexType>
   <element name="HelloWorld8Msg" nillable="true"
type="impl:HelloWorld8Msg"/>
   <complexType name="HelloWorld8OutMsg">
    <complexContent>
     <extension base="impl:AbstractHelloWorld8OutMsg">
      <sequence>
       <element name="name" nillable="true" type="xsd:string"/>
      </sequence>
     </extension>
    </complexContent>
   </complexType>
   <complexType name="AbstractHelloWorld8OutMsg">
    <sequence>
     <element maxOccurs="unbounded" name="myArray" nillable="true"
type="xsd:anyType"/>
    </sequence>
   </complexType>
   <element name="HelloWorld8OutMsg" nillable="true"
type="impl:HelloWorld8OutMsg"/>
  </schema>
 </wsdl:types>

   <wsdl:message name="helloWorldResponse">

      <wsdl:part name="helloWorldReturn" type="impl:HelloWorld8OutMsg"/

   </wsdl:message>

   <wsdl:message name="helloWorldRequest">

      <wsdl:part name="aMsg" type="impl:HelloWorld8Msg"/>

   </wsdl:message>

   <wsdl:portType name="HelloWorld8">

      <wsdl:operation name="helloWorld" parameterOrder="aMsg">

         <wsdl:input message="impl:helloWorldRequest"
name="helloWorldRequest"/>

         <wsdl:output message="impl:helloWorldResponse"
name="helloWorldResponse"/>

      </wsdl:operation>

   </wsdl:portType>

   <wsdl:binding name="HelloWorld8SoapBinding"
type="impl:HelloWorld8">

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

      <wsdl:operation name="helloWorld">

         <wsdlsoap:operation soapAction=""/>

         <wsdl:input name="helloWorldRequest">

            <wsdlsoap:body namespace="http://
helloworld.services.jjs.xxxxxxxxx.com" use="literal"/>

         </wsdl:input>

         <wsdl:output name="helloWorldResponse">

            <wsdlsoap:body namespace="http://
helloworld.services.jjs.xxxxxxxxx.com" use="literal"/>

         </wsdl:output>

      </wsdl:operation>

   </wsdl:binding>

   <wsdl:service name="HelloWorld8Service">

      <wsdl:port binding="impl:HelloWorld8SoapBinding"
name="HelloWorld8">

         <wsdlsoap:address location="http://localhost:9084/
jlp_jjs_Services/services/HelloWorld8"/>

      </wsdl:port>

   </wsdl:service>

</wsdl:definitions>

Heres the service....

public class HelloWorld8 {
    public String helloWorld(HelloWorld8Msg aMsg) {

        int arraySize = aMsg.getMyArray().length;
        System.out.println("arraySize=[" + arraySize + "]");
        String arrayContent = "";
        for (int n = 0; n < arraySize; n++) {
            arrayContent = arrayContent + ", " + aMsg.getMyArray()[n];
            System.out.println("arrayContent=[" + arrayContent + "]");
        }
        return "Hello " + aMsg.getName() + "." + arrayContent + ".";
    }
}

Heres the message...

public class HelloWorld8Msg extends AbstractHelloWorld8Msg {
    public String name = "aa";

    public HelloWorld8Msg() {
        name = "bb";
    }

    public HelloWorld8Msg(String anName, HelloItem[] anMyArray) {
        name = anName;
        setMyArray(anMyArray);
    }
    /**
     * @return Returns the name.
     */
    public String getName() {
        return name;
    }
    /**
     * @param anName The name to set.
     */
    public void setName(String anName) {
        name = anName;
    }
}

Heres HelloItem...

public class HelloItem implements Serializable {

    public String key;
    public String value;

    public HelloItem(String anKey, String anValue) {
        key = anKey;
        value = anValue;
    }
    public String getKey() {
        return key;
    }
    public void setKey(String anKey) {
        key = anKey;
    }
    public String getValue() {
        return value;
    }
    public void setValue(String anValue) {
        value = anValue;
    }

    public String toString() {
        return "key=[" + key + "], value=[" + value + "]";
    }
}

Heres the super class...
import java.io.Serializable;

public class AbstractHelloWorld8Msg implements Serializable {
    public HelloItem[] myArray = {new HelloItem("aaa", "Fred"), new
HelloItem("bbb", "Wilma"), new HelloItem("ccc", "Pebbles")};

    /**
     * @return Returns the myArray.
     */
    public HelloItem getMyArray(int i) {
        return myArray[i];
    }
    public HelloItem[] getMyArray() {
        return myArray;
    }
    /**
     * @param anMyArray The myArray to set.
     */
    public void setMyArray(HelloItem[] anMyArray) {
        myArray = anMyArray;
    }
    public void setMyArray(int i, HelloItem aHelloItem) {
        myArray[i] = aHelloItem;
    }
}

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