Hi! 1. Has anybody planned, or started, to create an AQL-parser in Java?
Maybe the basics from AQL to parse tree could be common for several different persistence implementations and then the rest of the implementation will be different for different persistence mechanisms. Our first interest will be in transforming AQL queries to queries against an XML-database containing versioned Compositions. (It's for an educational system where performance isn't crucial.) 2. Are there any suggestions for standardised response formats? It would be interesting if we could query each others' implementations (Python and various Java based ones) and interpret the response :-) When returning entire openEHR subtrees (an entire Composition or Entry for example) I guess the current XML-format could be used to start with. The response is likely to often be a list of such subtrees and the format of that list Would need to be standardised. Another case is when using the AS operator, how do we in a standardised way identify the named parts. Best regards, Erik Sundvall erisu at imt.liu.se http://www.imt.liu.se/~erisu/ Tel: +46-13-227579
