Glad you found a solution. On Jul 24, 2015 2:14 AM, "Robson, Alan" <alan.rob...@viasat.com> wrote:
> Thank you for your reply, I’m really glad you understood my question ! > and your reply was very helpful > > > > I refactored my data to make “freezes” children of the “Pug-2” LDPC and > modified my query, I can get what I need now. > > > > Many thanks for taking the time > > > > Alan > > > > *From:* Sergio Fernández [mailto:wik...@apache.org] > *Sent:* Thursday, July 23, 2015 1:06 AM > *To:* users@marmotta.apache.org > *Subject:* Re: LDPath Query > > > > Hi Alan > > > > On Wed, Jul 22, 2015 at 9:16 AM, Robson, Alan <alan.rob...@viasat.com> > wrote: > > I’d like a single query to return all the freezes for a system specified > by its fqdn in one shot (ie. if possible not have to query to collect the > resources with that fqdn (eg sys:Pug-2) followed by a separate query to get > the freezes that are rdf:about sys:Pug-2) > > > > First of all LDPath is a resource-centered query language: you start with > a context resource and then you follow paths. For such kind of queries > " return all the freezes for a system" maybe SPARQL would give your better > expressiveness. Check it out in Marmotta, please. > > > > > > I have two questions… > > 1) How can I select cal:dtstart and cal:dtend times for freezes > belonging to the freeze matching rdf:about[crtv:fqdn is "pug.local"] ? I > can see how I can select rdf:about, but not the other fields in the freeze > record > > Because at that point you already walked the path, you're already in the > rdf:about, and you can' t go back to the parent. > > > > Jakob, do we have any trick for such construction? > > > > 2) How can I group the results together ? If I mess with it I can > get a list of start times, a list of end times or even a big list of start > and end times mixed together, but I can’t figure a way to get a list of > pairs of start and end times that go together, one for each “Freeze”. Maybe > I have just structured the data wrongly. > > I guess this is something easier to query with SPARQL... > > > > I'd recomend you to take a look to the language specification: > > > > http://marmotta.apache.org/ldpath/language > <https://urldefense.proofpoint.com/v2/url?u=http-3A__marmotta.apache.org_ldpath_language&d=BQMFaQ&c=jcv3orpCsv7C4ly8-ubDob57ycZ4jvhoYZNDBA06fPk&r=xN9AnMDZvO_QvUZQZcoply6WFqSJuNcpv-dDu2fA4Ac&m=6dKkc45v-VtUhr8N5yVvFxs6iUwTMsTmXkBxiLJxep8&s=Ac2ojgwD6rw2P_hogJwTlLr30Dqycnd0LS1wvnIhEmQ&e=> > > > > Sorry for not being so helpful. If Jakob jumps in he could probably help > you more, since he is the expert on LDPath. > > > > Cheers, > > > > -- > > Sergio Fernández > Partner Technology Manager > Redlink GmbH > m: +43 6602747925 > e: sergio.fernan...@redlink.co > w: http://redlink.co > <https://urldefense.proofpoint.com/v2/url?u=http-3A__redlink.co_&d=BQMFaQ&c=jcv3orpCsv7C4ly8-ubDob57ycZ4jvhoYZNDBA06fPk&r=xN9AnMDZvO_QvUZQZcoply6WFqSJuNcpv-dDu2fA4Ac&m=6dKkc45v-VtUhr8N5yVvFxs6iUwTMsTmXkBxiLJxep8&s=UpfBfd6ivLMSjRuXEcQGhTt2w_mcxsScwEfwS7BVjWM&e=> >
