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A Flexible Directory Query Language for the Efficient Processing of Service Composition Queries

机译:灵活的目录查询语言,可高效处理服务组合查询

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摘要

Service composition is a major challenge in an open environment populated by large numbers of heterogeneous services. In such a setting, the efficient interaction of directory-based service discovery with service composition engines is crucial. In this article we present a Java-based directory that offers special functionality enabling effective service composition. In order to optimize the interaction of the directory with different service composition algorithms exploiting application-specific heuristics, the directory supports user-defined selection and ranking functions written in a declarative query language. Inside the directory queries are transformed and compiled to JVM bytecode which is dynamically linked into the directory. The compiled query enables a best-first search of matching directory entries, efficiently pruning the search space?
机译:在由大量异构服务构成的开放环境中,服务组合是一项重大挑战。在这种情况下,基于目录的服务发现与服务组合引擎的有效交互至关重要。在本文中,我们介绍了一个基于Java的目录,该目录提供了可实现有效服务组合的特殊功能。为了优化目录与利用特定于应用的试探法的不同服务组合算法的交互,该目录支持以声明性查询语言编写的用户定义的选择和排名功能。在目录内部,查询被转换并编译为JVM字节码,该字节码动态链接到目录中。编译后的查询可实现对匹配目录条目的最佳优先搜索,从而有效地修剪搜索空间?

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