If we need to perform a query, in which we need to use an "AND" or
"OR" operation or UNION operation or even an equivalent operation, how
would we do this within sparql with topbraid. In an example, we have
a Tools ontology, and we built a sparql query to retrieve the parents
of the tool that implements a given property (in this case the label
called "Methods and Techniques").
SELECT *
WHERE {
?givenClass rdfs:label "integer programming"^^xsd:string .
?givenClass rdfs:subClassOf ?parentClass .
?tool SDSSTool:implements ?parentClass .
?tool rdfs:label ?label .
}
However, in the result set, we have several set of cases where want
want to either expand what is returned or have a more explicity
setting. I am beginner with sparql, and would appreciate any help
with figuring it out.
Case #1: From the query above, we want to also restrict the tools to
prices under $5000.
Case #2: From the query above, we wish to do a "UNION" or an "OR"
where we can get all the direct children of the tools (in addition to
the parent, which the above clause does) selected.
Case #3: From the query above, we want to select multiple different
properties, so instead of just the ?givenClass rdfs:label "integer
programming", we would want something like ?givenClass rdfs:label
"integer programming" OR ?givenClass rdfs:label "simple additive
method", so that we could in one dataset get tools and their parents
that implement either of these two methods.
Thank you for any help.
Steve
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