文章基本信息

标题：A SPATIAL DECISION SERVICE FOR BPEL
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作者：A. Donaubauer ; F. Straub
期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2010
卷号：XXXVIII - 4/W13
出版社：Copernicus Publications
摘要：In many business decisions and business processes spatial information plays an important role. Although in computer science with the Business Process Execution Language (BPEL) a standard for modelling and controlling business process workflows exists, the instruction set defined by this standard lacks spatial operators. For example topologic operators like “touches” or “within” would be needed for branching business process workflows depending on the spatial properties of data involved. Analogous to so called decision gateways used in the Business Process Modeling Notation (BPMN) for branching workflows by comparing alphanumeric data using logical operators like “less than”, “equal to” or “greater than”, the introduction of spatial operators would lead to “spatial decision gateways”.In this paper we discuss several approaches to extend BPEL in such a way that it is possible to define and implement spatial decision gateways. The most promising approach introduces a so called spatial decision service which could for example be based on the Web Processing Service specification of the Open Geospatial Consortium (OGC WPS). One of the advantages of this approach is to keep up interoperability with existing BPEL tools because the BPEL standard itself is not changed at all.As a proof of concept we present a spatially enabled business process workflow dealing with real-world problems from the insurance domain.The concept introduced here uses the BPEL for describing business process workflows which are then implemented on a distributed computing platform based on the Service-Oriented Architecture (SOA) paradigm. The aim of our future research is to not only consider SOA but platform-independently describe geoprocessing workflows at the conceptual level using a conceptual schema language like UML. The BPEL will in this case be one of several platform-specific models (PSM) which shall according to the model-driven architecture paradigm (MDA) be automatically derived from the platform-independent workflow description (PIM) by means of so called PIM-to-PSM-mappings. In the same way other PIM-to-PSM-mappings could then be defined for proprietary geoprocessing tools like ESRI Model Builder or FME Workbench or even for fundamentally different software architecture paradigms
关键词：Service Oriented Architecture (SOA); Business Process Execution Language (BPEL); Business Process Modeling Notation (BPMN); OGC Web Services; Web Processing Service (WPS); Geoprocessing Workflow; ERP System