On 1/26/07, Sean Davis <[EMAIL PROTECTED]> wrote: > I would like to build a small app akin to a filemaker database, but > web-based, of course. One nice feature of filemaker is the ability to > search based on pretty much any field (or combination). I know how to do > the searches, but I would like to make a simple query language (things like > "2..3", ">3", "=3", "widge*", etc.). I have read a bit about tokenizers. > Does using a token system make sense, or is there a better or simpler way? > Of course, I have to validate these things and then create SQL from them, so > any hints from that point of view are also appreciated.
I did something very similar to this recently. I implemented search expressions like "food and (cheese or beer)" and translated the expressions into SQL. I made use of Yapps2. I've used PLY in the past. I liked both of them. I can send you code if you want. In the distant past, I wrote an article about writing a programming language in Python: http://www.ddj.com/184405580;jsessionid=NZM4QI22OXGR4QSNDLRSKHSCJUNN2JVN?_requestid=578822 Happy Hacking! -jj -- http://jjinux.blogspot.com/ --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "pylons-discuss" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/pylons-discuss?hl=en -~----------~----~----~----~------~----~------~--~---
