An exception handling model for spatial information services flow by policy

Denghui Zhang; Bin Xie; Le Yu

doi:10.1117/12.815774

29 December 2008 An exception handling model for spatial information services flow by policy

Denghui Zhang, Bin Xie, Le Yu

Proceedings Volume 7285, International Conference on Earth Observation Data Processing and Analysis (ICEODPA); 72852N (2008) https://doi.org/10.1117/12.815774
Event: International Conference on Earth Observation Data Processing and Analysis, 2008, Wuhan, China

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.

Citation Download Citation

Denghui Zhang, Bin Xie, and Le Yu "An exception handling model for spatial information services flow by policy", Proc. SPIE 7285, International Conference on Earth Observation Data Processing and Analysis (ICEODPA), 72852N (29 December 2008); https://doi.org/10.1117/12.815774

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