7 messages in org.oasis-open.lists.tagRe: [tag] a proposal for "multiple" e...| From | Sent On | Attachments |
|---|---|---|
| Jacques R. Durand | Apr 10, 2009 12:59 pm | |
| Stephen Green | Apr 14, 2009 6:05 am | |
| Jacques R. Durand | Apr 14, 2009 12:21 pm | |
| Jacques R. Durand | Apr 14, 2009 4:25 pm | |
| Stephen Green | Apr 15, 2009 4:15 am | |
| Jacques R. Durand | Apr 16, 2009 11:18 am | |
| Stephen Green | Apr 16, 2009 11:48 am |
| Subject: | Re: [tag] a proposal for "multiple" elements in Target, Prerequisite, Predicate | |
|---|---|---|
| From: | Stephen Green (step...@documentengineeringservices.com) | |
| Date: | Apr 14, 2009 6:05:14 am | |
| List: | org.oasis-open.lists.tag | |
I'd only add that prerequisite and predicate may need the multiple occurance of the prose sub-element to allow for multiple human languages. The trouble then arises of how to handle both the prose and the expression being multi- occurance. It seems to need the matching of the prose to just or of the 'expr' elements or perhaps to the sum expression all of the 'expr' elements. I would prefer to see the 'name' attribute at the 'prerequisite' level:
<prerequisite name="youngauthor"> <prose lg="en">...</prose> <prose lg="fr">...</prose> <prose lg="jp">...</prose> <expr lg="XPath" > (a boolean expression, e.g. age less 35) </expr> </prerequisite> <prerequisite name="prolific"> ... <prerequisite name="international"> ... <prerequisite name="primary"> <prose lg="en">...</prose> <prose lg="fr">...</prose> <prose lg="jp">...</prose> <expr lg="XPath"> ( a boolean expression, that states the overall prereq expression, e.g.: $youngauthor and ($prolific or $international) </expr> </prerequisite>
Then it is clear that all of the prose contents for a single prerequisite apply to the same expression.
- Steve
PS: apologies for missing call yesterday - was coming back from holiday and forgot it would mean getting back too late for the call.
2009/4/10 Jacques R. Durand <JDur...@us.fujitsu.com>:
A general proposal for "multiple expressions" in Target, Prerequisite, Predicate: (trying to take into account previous remarks)
1- Target: this element is unique to a TA. But the target may be defined as a composition of several artifacts, that are in turn described by several expressions elements under <target>. It is this composition that is subject to the predicate.
See the example given in wiki (issue #2 http://wiki.oasis-open.org/tag/Issues) , where the target is a combination of "author" + related artifacts, identified using different - but related - XPath expressions :
<target> <prose>...</prose> <expr name="author" lg="XPath"
/whoswho/arts[@section="literature"]/biographies/author</expr>
<expr name="books" lg="XPath">document(..mybooklist..)/book[@author = $author/name]</expr> <expr name="publishers" lg="XPath">document(..publishing houses ..) /publishersdirectory/publisher[fn:index-of( fn:distinct-values("for $bk in $books return $bk/@publisher"), @name) gt 0 ]</expr> </target>
This combination of artifacts is subject to the TA predicate and prerequisite.
2. Prerequisite: this optional element may be multiple in a TA, with the implicit semantics of logical AND. But each one of these <prerequisite> elements is structured like above <target>: MAY contain several named expressions, that may be referred to by their name and composed into more complex logical expressions:
<prerequisite> <prose>...</prose> <expr name="youngauthor" lg="XPath" > (a boolean expression, e.g. age less 35) </expr> <expr name="prolific" lg="XPath"> ( a boolean expression, e.g. number books more than 10 over 10 years ) </expr> <expr name="international" lg="XPath"> ( a boolean expression, e.g. published in more than 2 languages )</expr> <expr name="primary" lg="XPath"> ( a boolean expression, that states the overall prereq expression, e.g.: $youngauthor and ($prolific or $international) </expr> </prerequisite>
3- Predicate: this element is unique to a TA. Structured exactly like a Prerequsite element above.
Jacques
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