Re: [Hsqldb-developers] Survey of Scanners and Parsers

[Blaine S. <bla...@ad...>]

Harald Niesche wrote:
>I compared hsqldb to the Axion DB a while ago, and I found their code
>considerably harder to read and in it's current state it does far less
>than hsqldb. It's parser is written using JavaCC. Compare the build
>instructions to those for hsqldb: http://axion.tigris.org/building.html
>
>...
>
>Thanks for listening
>
>Harald
>  
The only thing more difficult I see in their build instructions is to 
download dependency
libs.  I have no idea whether JavaCC has these dependencies, or if 
JavaCC needs them
independently of JavaCC, but it doesn't matter much since I don't think 
anybody is
advocating that we use JavaCC.  We should look at the library 
dependencies for the
products we are considering using, not some other product.

I don't disagree with the rest of what you say wrt the primary HSQLDB 
parser. 
This does not necessarily apply to a parser for PL/SQL which needs to handle
variables and could hand off globs of the plain SQL (perhaps some 
pre-processed)
to the primary HSQLDB parser (or a superclass/subclass/something-similar).