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An extension to BPEL for criteria-based web service composition

机译:BPEL的扩展,用于基于标准的Web服务组合

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In our earlier work, we defined criteria-based web service (CBWS) as a service which has 'criteria' associated with it. Criteria are a set of properties and are a part of non-functional properties (NFPs) of a service. Composite web services invoke one or more additional web services and combine their functionality to fulfil the user's requirement. In this paper, we propose that a composite service be able to invoke CBWS. To support this, our proposed approach is to extend the Business Process Execution Language (BPEL) to extended BPEL (X-BPEL) by introducing new activities which help to get the criteria information from the user before invoking CBWS. It is possible that more than one CBWS satisfies the criteria specified by the user. Upon finding these services, the user is given this list of web services to choose any one of them. This dialogue is supported by new activities in X-BPEL. The extensions are defined in the X-BPEL schema.
机译:在我们的早期工作中,我们将基于标准的Web服务(CBWS)定义为具有“标准”的服务。准则是一组属性,并且是服务的非功能属性(NFP)的一部分。组合Web服务调用一个或多个其他Web服务,并结合其功能以满足用户的需求。在本文中,我们建议复合服务能够调用CBWS。为了支持这一点,我们提出的方法是通过引入有助于在调用CBWS之前从用户获取标准信息的新活动,将业务流程执行语言(BPEL)扩展为扩展的BPEL(X-BPEL)。一个以上的CBWS可能满足用户指定的标准。找到这些服务后,将为用户提供此Web服务列表以选择其中任何一个。 X-BPEL中的新活动支持此对话。扩展在X-BPEL模式中定义。

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