I guess that's true. Due to the nature of the "normal" requirements that
this feature is used for, it will take the input string and post-process
it beyond recognition, for example to inject the names of the target
graphs, to split multiple words into AND and to wrap each term with *
... *. However, you can use OR in between words.
What operators in particular do you need?
Holger
On 11/11/2020 3:27 AM, Matt Goldberg wrote:
Hello-
Is it true that textindex:query magic property cannot support the
Lucene operators?
Thanks.
On Friday, November 6, 2020 at 1:06:59 PM UTC-5 Matt Goldberg wrote:
Thanks for the heads up. I'll continue experimenting.
On Thursday, November 5, 2020 at 6:49:55 PM UTC-5 Holger Knublauch
wrote:
Hi Matt,
smf:luceneQuery is in fact the magic property that Search the
EDG is using, but without knowing more about your specific use
case I would say 'use with caution' as the magic property is
really meant for use with in SWP and has some quirks.
For example, the user must define a limit, facets are kind of
a pain to pass through, target graphs must opt in, working
copies are out of scope, and lastly all graphs in the index
are queried - the only way to narrow the scope is by providing
a graph facet.
But generally speaking this should work
(params are: search term, facets, offset, limit, advanced
syntax (when true the magic property will use the input
verbatim, essentially allowing lucene operands to be utilized)
SELECT ?result ?score ?total
WHERE {
("term" ?facetFilters 0 100 false) smf:luceneQuery (?result
?score ?total)
}
If the user needs facets, we'd have to work up a more thorough
example, which would involve temp graphs.
So the alternative would be to use the textindex:query magic
property while iterating over the properties of interest.
Holger
On 11/6/2020 12:12 AM, Matt Goldberg wrote:
That magic property requires a specific property to search
values of, which is not quite what I want at the moment.
After digging some more, I found smf:luceneQuery which
appears to return similar results to Search the EDG. Is there
any caveats with using this magic property?
On Wednesday, November 4, 2020 at 6:04:54 PM UTC-5 Holger
Knublauch wrote:
Hi Matt,
yes there are functions in the textindex namespace
(http://topbraid.org/textindex#
<http://topbraid.org/textindex#>)
Open the file \server.topbraidlive.org
<http://server.topbraidlive.org>\web\2018\textindex.ui.ttlx
in TBC to see their declarations.
The name of the index for EDG vocabularies is "teamwork"
- see the Text Indices admin page.
An example call would be
("teamwork" rdfs:comment "hello") textindex:query
(?subject ?score ?literal ?graph)
If you have follow-up questions, please ask here.
Holger
On 11/5/2020 8:17 AM, Matt Goldberg wrote:
Hello-
Is there a mechanism like a magic property to query the
freetext index from SPARQL? I didn't see one mentioned
in the TopBraid documentation. I've used some other
systems that have this feature.
Thanks.
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