摘要： 主要阐述了OpenGIS WMS服务的一种实现策略。采用流水线模式构造系统，并详细讨论了它的概念、设计及实现。使系统灵活性和扩展性得到了最大的体现。采用SAX技术处理GML数据流，使系统运算简单、实现容易、系统资源占用率低。

关键词: WMS, 流水线, 过滤器, 模式, COM

Abstract: This paper proposes a method to implement OpenGIS WMS. Based on pipeline pattern makes the system fully scalable and flexible. The definition, design and implementation are introduced. GML data stream flows in the pipeline system is parsed by SAX. The whole system owns concise framework and low resource usability and is easy to be realized.

Key words: WMS, Pipeline, Filter, Pattern, COM

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