【作者】 梁娟珠；

【导师】 励惠国； 吴升；

【作者基本信息】 福州大学 ， 通信与信息系统， 2011， 博士

【摘要】 随着空间信息应用需求的不断扩大，空间海量数据的异构分布、处理复杂、计算密集等问题逐渐成为制约空间信息广泛共享和应用的重要因素。而Web服务的提出与发展，为不同级别和部门的Internent应用服务系统提出了新的发展方向和趋势，Web服务给空间信息的共享和服务提供了一个新的集成思路，即空间信息Web服务，它有效地解决了分布、异构环境下的空间信息共享和互操作问题，是实现分布式空间信息广泛共享和服务的主要研究方向和实现途径。互联网上或者机构内部的空间信息服务不断丰富，使得如何将这些现有的空间信息Web服务，动态地组合起来，形成新的增值服务是当前一种重要的空间信息应用构造模式。因此，空间信息服务链技术也成为地理信息科学领域一个新的研究热点。本文针对当前空间信息服务链研究中存在的不足，重点在空间信息服务链技术体系、空间信息服务管理机制、空间信息服务链业务流程建模与描述、空间信息服务链验证与执行等几个方面进行深入研究。具体的研究内容如下：（1）在研究空间信息服务链概念、模式、构建方法、相关的支撑技术等理论的基础上，提出了空间信息服务链技术体系；（2）以区域空间信息共享与服务的应用需求为背景，在分析OGC、ISO等组织以及其他一些学者对空间信息服务分类方法研究的基础上，提出了的面向区域用户应用需求的空间信息服务分类体系；（3）在分析已有的空间信息注册中心存在的问题的基础上，提出了集空间信息服务的搜索、描述、分类、组织、存储、发布、发现为一体的空间信息服务管理机制，为空间信息服务链的有效执行提供支持，并建立区域空间信息应用领域的服务库管理中心，对空间信息服务进行有效的注册、管理。服务库管理中心不仅存储服务的基本信息，还存储了服务的质量属性信息、服务关系，为用户提供分类查询、关键字查询、条件约束查询、服务质量约束查询、服务关联查询以及综合查询等服务发现方式。（4）对现有的服务链过程建模方法以及流程描述方法进行对比研究，提出基于活动网络图的服务链流程建模方法，提供可视化平台让用户对服务链的流程进行建模，构建服务链过程模型，并可对节点属性进行自然语言描述。（5）对过程模型进行解析，基于XML语言规范，以网络服务业务流程执行语言（WS-BPEL）为基础，通过必要的修改、补充和简化，提出适合空间信息服务链动态变化特点的空间信息服务链描述语言SSCDL，对服务链的过程模型进行结构化描述，构建服务链业务流程的逻辑描述。（6）引入Pi演算的行为等价理论，对服务链过程描述进行正确性验证，即验证服务链的执行结果是否与用户的需求目标相一致。（7）研究服务链的执行和管理监控方法，使执行引擎具有控制具体服务实例间的流转和数据传输，同时也负责参数的传递、异常处理和与用户的交互，以及对服务链构建过程中所涉及到的服务链流程模型、服务库注册中心、服务链执行日志等进行管理维护等能力。（8）面向区域空间信息共享与服务应用需求，设计并实现了空间信息服务链构建平台，并以海峡物流公共信息平台为典型应用，验证本文提出的空间信息服务链关键技术和方法。更多还原

【Abstract】 Along with the continuous expansion of spatial information applicationrequirements, the problems of heterogeneous distributing, complex handling and,intensive computing of vast amounts spatial data have become to important factors onrestricting application of spatial information widely sharing. The proposed web serviceand its development have set new direction and trend for the internet ApplicationService Systen of different levels and departments. Web service offers a newintegration idea for spatial information sharing and serving, that is spatial informationweb service. The spatial information web service effectively solves the problems ofspatial information sharing and interoperating on the distributed and heterogeneousenvironment, it is the main research direction and way to realize distritited spatialinformation sharing and serving widly. The constantly enrich spatial informationservices on the internet or within the organizations, makes how to dynamicallycomposite the existing spatial information web services to form a new value addedservice to be currently an improtmant spatial information application construct model.Therefore, the technic of spatial information service chain has become a new researchfocus in the field of geographic information science. Focusing on the shortcomings ofcurrent spatial information chain study, this paper has lucubrated on the spatialinformation service technology system, spatial information service managementmechanism, spatial information service chain business process modeling anddescribing, spatial information service chain validating and implementing ect. Specificcontents are as follows:(1) Base on studying the theory of spatial information service chain concept,model, constructing methods, and correlative supporting technology, spatialinformation service chain technology system is proposed.(2) Taking the application requirement of regional spatial information sharing andserving as the background, the spatial information service classification system face onregional user application requirement is advanced, base on analyzing the spatialinformation service classification method of OGC,ISO and other scholars.(3) Base on analyzing the problems of the existing spatial information registrycenter, the spatial information service management mechanism system is put forword,which gathers spatial information service searching, describing, classificating,organizating, and storaging, releasing and finding to be one. And has built the servicedatabase management center of regional spatial information application field to registerand manage the spatial information service. The service database management centernot only stores the basic information of service, also stores the quality attributes ofservice and service relationships, to provice users with the service finding way of query classification query, keyword query, cnstraints query, associated query andcomprenhensive query(4) After comparing the existing service chain process modeling and processdescription method, service chain process modeling method is proposed based onactivity network diagram, and has provided a visual platform for users to model theservice chain process and to describe the node attributes using natural language.(5) Parsing the requirement model, basing on XML specification,taking webservice Business Process Execution Language(WS-BPEL)as the foundation,trough thenecessary changes,additions and simplify, the Spatial information Service ChainDescription Language SSCDL is advanced for the characteristics of spatial informationservice chain dynamic changing.SSCDL structural describes the requirement mode ofservicechain and builds the logic description of service chain business process.(6) Pi calculus behavior equivalent theory is introducted to verify the accuracy ofservice chain requirement model that is whether the implementing result of servicechain is same to the users’requirement goal.(7) The implementing and management controlling methods of service chain isstudied, so that the execution engine has the functions of controlling the specificservices instance to be on the move and data transmissing. The engine is alsoresponsible for passing parameters, exception handling and interaction with the user.And it has the functions of managing and maintenancing service chain business model,service database registry center and service chain excution log etc.(8) The spatial information service chain building platform is designed andplemented to meet the application requirement of reginal spatial information sharingand serving. And taked the “Channel Logistice Public Information Platform”as thetypical application to verify the key technologies and methods of spatial informationservice chain in this paper.更多还原