Blazegraph full text search with total count - sparql

Question

In SPARQL I can perform the following query in order to retrieve the fields and the total count in one query result:
SELECT ?total ?s
WHERE
{
{ SELECT (COUNT(?s) AS ?total)
WHERE
{ ?s <https://some/predicate/for/var1> ?var1 ;
<https://some/predicate/for/var1> ?var2
FILTER ( ( ?var1 = "something" ) && ( ?var2 = "something2" ) )
}
}
{ SELECT ?s
WHERE
{ ?s <https://some/predicate/for/var1> ?var1 ;
<https://some/predicate/for/var1> ?var2
FILTER ( ( ?var1 = "something" ) && ( ?var2 = "something2" ) )
}
LIMIT 3
}
}
Which returns something like this (s fields matched the specific predicate and filter I provided on the query):
+-------+----------------------------------------+
| total | s |
+-------+----------------------------------------+
| 150 | http://the/path/to/the/subject |
| 150 | http://the/path/to/another/subject |
| 150 | http://the/path/to/yet/another/subject |
+-------+----------------------------------------+
I want to do the same for full text search queries, which can be used as follows ?s bds:search “something” .
However, composing a query with the same structure as the previous one, does not work:
PREFIX bds: <http://www.bigdata.com/rdf/search#>
SELECT ?total ?s ?org
WHERE
{
{ SELECT (COUNT(?s) AS ?total)
WHERE{
?matchedValue
bds:search "something" ;
bds:relevance ?score ;
bds:rank ?rank .
?s ?matchedProperty ?matchedValue
FILTER ( ! isBlank(?s) )
}
}
{ SELECT ?s ?matchedProperty ?score ?rank
WHERE{
?matchedValue
bds:search "something" ;
bds:relevance ?score ;
bds:rank ?rank .
?s ?matchedProperty ?matchedValue
FILTER ( ! isBlank(?s) )
}
LIMIT 10
}
}
Even though, those subqueries return the correct result separately.

Answer 1

As correctly mentioned by #stanislav-kralin and coming from the issue in Jira, you have to explicitly use SERVICE clause:
PREFIX bds: <http://www.bigdata.com/rdf/search#>
SELECT ?total ?s ?org
WHERE
{
{ SELECT (COUNT(?s) AS ?total)
WHERE {
SERVICE <http://www.bigdata.com/rdf/search#search> {
?matchedValue
bds:search "something" ;
bds:relevance ?score ;
bds:rank ?rank .
}
?s ?matchedProperty ?matchedValue
FILTER ( ! isBlank(?s) )
}
}
{ SELECT ?s ?matchedProperty ?score ?rank
WHERE {
SERVICE <http://www.bigdata.com/rdf/search#search> {
?matchedValue
bds:search "something" ;
bds:relevance ?score ;
bds:rank ?rank .
}
?s ?matchedProperty ?matchedValue
FILTER ( ! isBlank(?s) )
}
LIMIT 10
}
}