Network Deployment (Distributed operating systems), v8.0 > Develop and deploying applications > Develop web services - Notification (WS-Notification) > Develop applications that use WS-Notification


Example: Creating a Notification consumer web service skeleton

Use this example when creating a web service that implements the NotificationConsumer portType defined by the Web Services Base Notification specification.

This task provides two code examples:

The article Write JAX-WS applications for WS-Notification also includes an example of a consumer Web service.


Procedure

If you are creating a Notification consumer web service skeleton, see the following code examples.


Example

The following example WSDL document describes a web service that implements the NotificationConsumer portType defined by the Web Services Base Notification specification: 

<?xml version="1.0" encoding="utf-8"?>

<wsdl:definitions xmlns="http://schemas.xmlsoap.org/wsdl/"
    xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:wsn-bw="http://docs.oasis-open.org/wsn/bw-2"
    xmlns:wsdlsoap="http://schemas.xmlsoap.org/wsdl/soap/"
    xmlns:tns="uri:example.wsn/consumer"
    targetNamespace="uri:example.wsn/consumer">

<wsdl:import namespace="http://docs.oasis-open.org/wsn/bw-2"
                           location="http://docs.oasis-open.org/wsn/bw-2.wsdl" />

<wsdl:binding name="NotificationConsumerBinding" type="wsn-bw:NotificationConsumer">  
<wsdlsoap:binding style="document" transport="http://schemas.xmlsoap.org/soap///publib.boulder.ibm.com/infocenter/wasinfo/v8r0/index.jsp?topic=/  " />  
<wsdl:operation name="Notify">      
<wsdlsoap:operation soapAction="" />      
<wsdl:input>          
<wsdlsoap:body use="literal" />      
</wsdl:input>  
</wsdl:operation>
</wsdl:binding>

<wsdl:service name="NotificationConsumerService">  
<wsdl:port name="NotificationConsumerPort" binding="tns:NotificationConsumerBinding">      
<wsdlsoap:address location="http://myserver.mycom.com:9080/Consumer" />  
</wsdl:port>
</wsdl:service>

</wsdl:definitions>

The following example shows a basic implementation of the Service Endpoint Interface (SEI) generated from the preceding WSDL document using the WSDL2Java tool: 

public class ConsumerExample implements NotificationConsumer {
 
    public void notify(NotificationMessage[] notificationMessage, SOAPElement[] any)
                                                                    throws RemoteException {
        // Process each NotificationMessage
        for (int i=0; i
<notificationMessage.length; i++) {         
            NotificationMessage message = notificationMessage[i];
         

   // Get the contents of the message
    SOAPElement messageContent = message.getMessageContents();
         

   // Get the expression indicating which topic the message is associated with
    TopicExpression topic = message.getTopic();

         
            // Get a reference to the producer (this value is optional and so might be null)
            EndpointReference producerRef = message.getProducerReference();
         
            // Get a reference to the subscription (this value is optional and so might be null)
            EndpointReference subscriptionRef = message.getSubscriptionReference();
         
            // User defined processing ...         

        }
    }
}

JAX-RPC
WS-Notification
Use WS-Notification for publish and subscribe messaging for web services
Secure WS-Notification


Related


http://docs.oasis-open.org/wsn/wsn-ws_base_notification-1.3-spec-os.pdf
http://www.w3.org/TR/1999/REC-xpath-19991116
http://www.w3.org/TR/xquery-semantics/
WSDL2Java command for JAX-RPC applications
WS-Notification troubleshooting tips
http://www.ibm.com/developerworks/websphere/techjournal/0811_partridge/0811_partridge.html

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