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It is possible for more than one grammar to support the same syntax. The following are the grammars currently available.
Grammar | Release | Maintainer | Notes Description | Issues |
|---|---|---|---|---|
'Original' AQL grammar | v0.6 (2009) | Ocean Informatics | Hand-built grammar. | Contains some non left-recursive constructs, preventing direct use by LL parsers. |
ANTlr AQL grammar | v0.0.19 (2011) | Marand, contact: Bostjan Lah | Built from 'Original' AQL grammar by Ocean Informatics |
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References
Dynamic Generation of Archetype-Based User Interfaces for Queries on Electronic Health Record Databases
Shelly Sachdeva, Daigo Yaginuma, Wanming Chu, and Subhash Bhalla
Graduate Department of Computer and Information Systems, University of Aizu, Fukushima, Japan