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A Compositional Evolution Method of Web Services Based on Petri Nets

A web service and atomic service technology, which is applied in the fields of instruments, computing, and electrical digital data processing, and can solve the problems of cumbersome calibration work, low preprocessing efficiency of evolution operations, and relatively high environmental requirements.

Active Publication Date: 2018-11-02
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The analysis of the existing literature shows that the current service composition evolution method is too complex in the formal description of the evolution requirements, and the semantic ontology used is single, which makes the preprocessing efficiency of the evolution operation low and makes the subsequent verification work very difficult. It is cumbersome and has relatively high requirements for the environment in which it operates

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  • A Compositional Evolution Method of Web Services Based on Petri Nets
  • A Compositional Evolution Method of Web Services Based on Petri Nets
  • A Compositional Evolution Method of Web Services Based on Petri Nets

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Embodiment Construction

[0097] The specific implementation of the Petri net-based Web service composition and evolution method proposed by the present invention is described in conjunction with an example of travel travel billing. The steps are as follows.

[0098] (1) Construct the Web service Petri net model and its relationship matrix.

[0099] (1.1) Establish atomic Web service library.

[0100] Table 1 Atomic Web Service Library of Tourism Information System

[0101]

[0102] Table 1 lists the atomic Web service library of tourism information system, including the information of Web service identification, name, function and interface. These atomic services are the basis of subsequent evolution.

[0103] (1.2) Establish the global dependency Petri net model of atomic services.

[0104] According to the inter-interface dependencies of atomic services in Table 1, establish the global dependency Petri net model of atomic services, such as figure 1 shown.

[0105] (1.3) Establish the Petri ne...

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Abstract

The invention provides a web service combination evolution method based on Petri network. By utilizing the web service combination evolution method, evolution operation can be executed on Web service combination according to evolution requirement on the basis of atom Web service global dependent Petri network model and Web service combination control structure Petri network model, positive evolution reasoning and reverse evolution reasoning are executed from each evolution point, and a final Web service combination evolution result is generated. By utilizing the web service combination evolution method, the software development efficiency can be improved, and changeful requirements of users can be quickly responded.

Description

technical field [0001] The patent of the present invention relates to a method for the composition and evolution of Web services based on Petri nets. Firstly, based on the dependencies between Web service interfaces, the atomic service global dependency Petri net model and the Web service composition control structure Petri net model are established; secondly, a formal description method for the evolution requirements of Web services is given, and the evolution requirements are transformed into the requirements of Web services. The evolution operation of the interface; again, after the conflict analysis and resolution of the evolution operation, the evolution operation is performed on the evolution point, and the atomic service global dependency Petri net model is updated; finally, the forward and reverse evolution reasoning is performed from each evolution point, Generate the final Web service composition evolution result. Background technique [0002] When using Web servi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 张元鸣倪宽肖刚陆佳炜徐俊高飞
Owner ZHEJIANG UNIV OF TECH