- From: Kohsuke KAWAGUCHI <kohsukekawaguchi@yahoo.com>
- Date: Mon, 22 Oct 2001 10:25:48 -0700
- To: xmlschema-dev@w3.org
> Section 4.3.4 of part 2 says: > > [Definition:] pattern is a constraint on the value space of a > datatype which is achieved by constraining the lexical space to > literals which match a specific pattern. The value of pattern must > be a regular expression. There is another problem in this paragraph. Namely, the pattern facet is not a constraint on the value space. One can apply a pattern facet [+-]\d+ to the integer type so that "+0" is legal but "0" is legal. But how does this facet constrain zero in the value space? It doesn't constitute any subset. I don't think adding "... achieved by constraining the lexical space" solves the problem. regards, ---------------------- K.Kawaguchi E-Mail: kohsukekawaguchi@yahoo.com
Received on Monday, 22 October 2001 13:27:46 UTC