On May 13, 2004, at 3:12 PM, Budhiraja, Nikhil wrote:
> just a quick question about how does cayenne know whether my value is
> a value or a key...
> is every string without a quote (") considered a key ?
I haven't figured out an automated way to generate token specs in
expression grammar at
http://objectstyle.org/cayenne/grammar/ExpressionParser.html, so all
the tokens look like a "black box" indeed.
Answering your question, Strings are interpreted as one of the
1. If it starts with a digit, this is a numeric constant value (e.g. 1
2. If it is enclosed in single or double quotes, it is a String
constant value (e.g. "xyz" or 'abc')
3. If it is unquoted and starts with a "_" or a letter, it is a key (or
4. If a token starts with $, it is a parameter.
This archive was generated by hypermail 2.0.0 : Thu May 13 2004 - 16:25:13 EDT