No, enumeration values do not need to be sorted. Il Sab 6 Ago 2022, 8:26 AM Roger L Costello <coste...@mitre.org> ha scritto:
> Thanks Mike. > > > > Okay, the alternatives in a pattern facet must be sorted > longest-to-shortest. > > > > What if the alternatives are expressed in an enumeration facet, e.g., > > > > <simpleType> > > <restriction base=”string”> > > <enumeration value=”abc”/> > > <enumeration value=”abcd”/> > > </restriction> > > </simpleType> > > > > Do I also need to sort the enumeration values in longest-to-shortest order? > > > > /Roger > > > > *From:* Mike Beckerle <mbecke...@apache.org> > *Sent:* Friday, August 5, 2022 5:50 PM > *To:* users@daffodil.apache.org > *Subject:* [EXT] Re: Do I need to sort the xs:pattern regex alternatives > longest-to-shortest? > > > > Yes you do. All the regex engines I know are greedy. > > > > Besides regexs just being fussy, this is the main reason DFDL has a > delimiter language that is it's own thing. Because the delimiters are > specified in different places, not all together as in a regex. Hence the > user has no opportunity to sort longest to shortest, so DFDL delimiters > match all the possible delimiters that can appear at a point with longest > match preferred. > > > > > > > > Il Ven 5 Ago 2022, 1:54 PM Roger L Costello <coste...@mitre.org> ha > scritto: > > Hi Folks, > > Recall that when using dfdl:lengthPattern you must specify its regex > alternatives longest-to-shortest. For example, if you specify this: > > dfdl:lengthPattern="abc|abcd" > > then you will get a "left over data" error message. > > So you must sort the alternatives in longest-to-shortest order. That is a > hassle. > > The "-V limited" option changes things. It enables me to abandon > dfdl:lengthPattern and instead use the XSD pattern facet: > > <simpleType> > <restriction base="string"> > <pattern value="abc|abcd"/> > </restriction> > </simpleType> > > Question: Do I need to sort the pattern facet alternatives in > longest-to-shortest order? I am hoping the answer is "no". > > /Roger > >
