Web Services Flow Language

Abstract: The invention discloses a method for realizing a model language capable of describing IOT (internet of things) service. The XML (extensive markup language)-based model language is used for showing a process that a user selects the IOT service and a description that the user combines the services at will, and uses a simple WSFL (web services flow language) to construct a simple IOT model service execution flow language according to the Petri network modeling rule. The model language can declare a group of relatively complete XML elements with less quantity and customized element tags to describe service entities and the relationship between the entities and determine a flexible standard showing the service combination so as to accelerate the development speed of the service model and support the reuse of the model.

Abstract: Assembling information for queries from distributed heterogeneous resources is a challenging and important process for inter-organizational collaboration and service provision. However, traditional distributed databases approaches ignore human intervention and most exception handling in the process. Therefore, we propose a work-flow-based approach to address this problem. This is particularly suitable in a loosely coupled and autonomous Web services environment, in which XML query plans are formulated in XQuery. We demonstrate the feasibility of our approach with a healthcare data integration case study and examine some typical use cases of exceptions handling in XQuery.

Abstract: In this paper, we identify research issues in the development of system infrastructure support for introducing workflow support into Open Hypermedia Systems. We explore the suitability and applicability of having hypermedia services in a Web Services architecture, and integrating Web Services Flow Language for the coordination and interoperability of services. We identify and discuss some important problems and research issues related to this approach.

Abstract: Service oriented architecture (SOA) represents a new evolutional spiral in the program-applications development and in the evaluation of the information systems concept. SOA is based on Web services, so called "granulated distributed program entities" that independently coexist in interaction with other programs and services. They can revile it and be used under special conditions determined by service publisher. Those entities are connected in complete program solution in case of SOA. SOA represents an extraordinary challenge at scientific, practical and economical level. That is the reason why SOA represents the topic of many different researches originating from different sources. Until present days different researches have been done related to SOA, and some technical standards like: Simple Object Access Protocol (SOAP), Web Services Description Language (WSDL), Universal Discovery Description and Integration (UDDI) were developed. Important program's equipment manufacturers (like IBM, Oracle and Microsoft) are working intensively and are investing in SOA and necessary standards development. From published development strategies it is clearly that SOA represents an essence of their future development. So, it is clearly that SOA will be developed in domain of practice, but in the scientific researches as well, because it opens a set of questions that can not be resolved just by technical standardization. Besides the basic infrastructure standards, SOA has a significant influence on business processes, and because of that, standardized and not-standardized specifications, like XML Process Definition Language (XPDL), Web Services Flow Language (WSFL), Business Process Modelling Language (BPML), Business Process Execution Language for Web Service (BPEL4WS), Web Services Choreography Description Language (WS-CDL) are developed in this domain. Unified Modelling Language (UML) gave also a strong motivation for SOA development, and in the last few years necessary UML profiles were developed. This paper addresses the problems and challenges of service oriented architecture deployment in modern organizations and contributes development methodology which comprises important aspects of SOA paradigm.