26 July 2007 Parsing GML data based on integrative GML syntactic and semantic schemas database
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Abstract
This paper proposes a new method to parse various application schemas of Geography Markup Language (GML) for understanding syntax and semantic of their element and type in order to implement uniform interpretation of the same GML instance data among diverse users. The proposed method generates an Integrative GML Syntactic and Semantic Schemas Database (IGSSSDB) from GML3.1 core schemas and corresponding application schema. This paper parses GML data based on IGSSSDB, which is composed of syntactic and semantic information, nesting information and mapping rules of GML core schemas and application schemas. Three kinds of relational tables are designed for storing information from schemas when constructing IGSSSDB. Those are info tables for schemas included and namespace imported in application schemas, tables for information related to schemas and catalog tables of core schemas. In relational tables, we propose to use homologous regular expression to describe model of elements and complex types in schemas, which can ensure model complete and readable. Based on IGSSSDB, we design and develop many APIs to implement GML data parsing, and can process syntactic and semantic information of GML data from diverse fields and users. At the latter part of this paper, test study is implemented to show that the proposed method is feasible and appropriate for parsing GML data. Also, it founds a good basis for future GML data studies such as storage, index and query etc.
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Lizhi Miao, Lizhi Miao, Shuliang Zhang, Shuliang Zhang, Guonian Lu, Guonian Lu, Xiaoli Gao, Xiaoli Gao, Donglai Jiao, Donglai Jiao, Jiayan Gan, Jiayan Gan, } "Parsing GML data based on integrative GML syntactic and semantic schemas database", Proc. SPIE 6753, Geoinformatics 2007: Geospatial Information Science, 67530X (26 July 2007); doi: 10.1117/12.761729; https://doi.org/10.1117/12.761729
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