Augmenting the OGC Web Processing Service with Message-Based Asynchronous Notification

Because the advances in research technologies and the geospatial data with which they deal are diverse and complex. The OGC Web Processing Service (WPS) has several areas of complexity. Basic request-response mechanisms need to contend with delays/failures, especially for mid-term or long-term actions. The asynchronicity in communication between a user and the corresponding Web processing service, or between two services, is significant. The Web Notification Service (WNS), an OGC notification and communication service by which a client may conduct asynchronous dialogues (message interchanges) with one or more other services, can be useful when satisfying a client request requires many collaborating services and/or when there are significant delays in satisfying the request. WNS-based asynchronous notification middleware has been implemented by augmenting the OGC Web Processing Service with message-based asynchronous notification to resolve WPS asynchronous communication and notification problems.