2016-09-01 16:51 GMT-03:00 PBKResearch <pe...@pbkresearch.co.uk>: > Hi Hernan > > > > I don’t understand your first question – I can’t see a connection between > SPARQL and what I am doing. > > >
You could get the Wikitionary data by querying a SPARQL endpoint http://wiktionary.dbpedia.org/sparql instead of scrapping web pages (which seems more difficult) > I downloaded XPath from http://smalltalkhub.com/mc/PharoExtras/XPath/. > However, I am probably using a somewhat out of date version; I downloaded > it about a year ago. > > > I don't know about that version. I copied an old version from SqueakSource (with permission) and updated from time to time, but there is no much. There is also a XPath2 repository which you may try. Hernán > Peter > > > > *From:* Pharo-users [mailto:pharo-users-boun...@lists.pharo.org] *On > Behalf Of *Hernán Morales Durand > *Sent:* 01 September 2016 18:54 > *To:* Any question about pharo is welcome <pharo-users@lists.pharo.org> > *Subject:* Re: [Pharo-users] Coding XPath as Smalltalk > > > > Hi Peter, > > > > 2016-09-01 10:26 GMT-03:00 PBKResearch <pe...@pbkresearch.co.uk>: > > Hello > > > > I am using XPath as a way of dissecting web pages, especially from > Wiktionary. > > > > Any specific reason to not use the SPARQL endpoint? > > > > > Generally I get good results, but I could get useful extra flexibility by > using the binary Smalltalk operators to represent XPath, as mentioned at > the end of the class comment for XPath. However, the description there is > very terse, and I am having difficulty seeing how to include more complex > expressions, especially attribute tests. > > > > Which XPath version are you using? How did you installed it? > > > > > I have put some of my XPath expressions through the XPath compiler and > looked at the output, and out of that I have found expressions which work > but look very clumsy. As an example, I have used the fragment: > > > > document xPath: '//div[@id=''catlinks'']//li//text()' > > > > and found that an equivalent is: > > > > document //'div' ?? [:node :x :y|(node attributeAt: 'id') = > 'catlinks']//'li'//[:n| n isStringNode]]. > > (I had to put two dummy arguments in the three-argument block to get it to > work.) > > > > Is there a more extensive explanation of the use of these binary > operators? If not, could some kind person show me the most concise > translation of the sample XPath above, to give me a start in working out > more complex cases? > > > > Many thanks for any help. > > > > Peter Kenny > > > > >
