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Proceedings Paper

An exception handling model for spatial information services flow by policy
Author(s): Denghui Zhang; Bin Xie; Le Yu
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Paper Abstract

Spatial service chain composed by multiple spatial services, which distributed on the internet, can realize specific, complicated spatial information processing task. This chain may be involved in bad stability, low usability and low efficiency because of service stateless and variability of service operation environment. In this paper, we abstract the spatial information service to form the Spatial Service Agent (SSA), and attach the spatial information data and processing service to become operation capability of SSA. After introduce contract and policy which are used to restrict and instruct the behavior of the SSA, multi-SSA based spatial information services flow expressed by half-ordered contract set which formed by SSA's negotiation. Through assign specific contract operation rule to each contract and indicate the prerequisite of cooperation, time consuming, and accomplishment state and so on, we can accurately get the service execution state of each step for spatial information services flow monitoring and exception handling.

Paper Details

Date Published: 29 December 2008
PDF: 7 pages
Proc. SPIE 7285, International Conference on Earth Observation Data Processing and Analysis (ICEODPA), 72852N (29 December 2008); doi: 10.1117/12.815774
Show Author Affiliations
Denghui Zhang, Zhejiang Shuren Univ. (China)
Bin Xie, Zhejiang Univ. (China)
Le Yu, Zhejiang Univ. (China)


Published in SPIE Proceedings Vol. 7285:
International Conference on Earth Observation Data Processing and Analysis (ICEODPA)
Deren Li; Jianya Gong; Huayi Wu, Editor(s)

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