Web 服务值类型的继承和互操作性

public class Employee implements java.io.Serializable {
     private String name;
     public String getName() {
          return name;
     }
     public void setName(String nm){
          name = nm;
     }
}
                

public class SalariedEmployee extends Employee {
 private int salary;
 public int getSalary() {
  return salary;
 }
 public void setSalary(int i) {
  salary = i;
 }
}
                

public String deriveInfoFor(Employee e) {
 String output = "Name="+ e.getName();
 if (e instanceof SalariedEmployee) {
  output+= " Person is a SalariedEmployee ";
  output+= ((SalariedEmployee)e).getSalary();
 }
 else output+= "Person is a Regular Employee ";
 return output;
} 
                

public interface EmployeeFactoryIF extends java.rmi.Remote{
 public abstract String deriveInfoFor(Employee e);
}
                

public class EmployeeTester {
 public static void main(String[] args) {
  try {
   java.rmi.Remote stub = createProxy();
   EmployeeFactory simpleWSTest = (EmployeeFactory)stub;
   SalariedEmployee fred = new SalariedEmployee();
   fred.setName("Fred");
   fred.setSalary(1000);
   System.out.println("-------Salaried Test---------");
   System.out.println(simpleWSTest.deriveInfoFor(fred));
   System.out.println("-------Regular Test----------");
   Employee bob = new Employee();
   bob.setName("Bob");
   System.out.println(simpleWSTest.deriveInfoFor(bob));
  } catch (Exception ex) {
   ex.printStackTrace();
  }
 }
 private static java.rmi.Remote createProxy() throws ServiceException {
  return 
  (java.rmi.Remote) (new EmployeeFactoryServiceLocator().getPort(EmployeeFactory.class));
 }
}
                

Java2WSDL EmployeeFactoryIF -extraClasses SalariedEmployee
                

public void dummy(SalariedEmployee e)
                

wsdl:types>
  <schema elementFormDefault="qualified" 
  targetNamespace="http://lukas.ws.demo.ibm.com"   xmlns="http://www.w3.org/2001/XMLSchema">
   <complexType name="Employee">
    <sequence>
     <element name="name" nillable="true" type="xsd:string"/>
    </sequence>
   </complexType>
   <element name="deriveInfoFor">
    <complexType>
     <sequence>
      <element name="e" nillable="true" type="impl:Employee"/>
     </sequence> 
    </complexType>
   </element>
   <element name="deriveInfoForResponse">
    <complexType>
     <sequence>
      <element name="deriveInfoForReturn" nillable="true" type="xsd:string"/>
     </sequence>
    </complexType>
   </element>
   <complexType name="SalariedEmployee">
    <complexContent>
     <extension base="impl:Employee">
      <sequence>
       <element name="salary" type="xsd:int"/>
      </sequence>
     </extension>
    </complexContent>
   </complexType>
   <element name="dummy">
    <complexType>
     <sequence>
      <element name="e" nillable="true" type="impl:SalariedEmployee"/>
     </sequence>
    </complexType>
   </element>
  </schema>
 </wsdl:types>
                

----------Salaried Test---------
Name=Fred Person is a SalariedEmployee 1000
----------Regular Test----------
Name=Bob Person is a Regular Employee
                

public class Employee {
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(IsNullable=true)]
        public string name;
    }
    /// <remarks/>
    [System.Xml.Serialization.XmlTypeAttribute(Namespace="http://lukas.ws.demo.ibm.com")]
    public class SalariedEmployee : Employee {
        /// <remarks/>
        public int salary;
    }
                

<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<soap:Body>
<deriveInfoFor xmlns="http://lukas.ws.demo.ibm.com">
<e xsi:type="SalariedEmployee">
<name>Hello World</name>
<salary>10</salary>
</e>
</deriveInfoFor>
</soap:Body>
</soap:Envelope>