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package rsacomb
/* Java imports */
import java.util.HashMap
import java.io.StringReader
import tech.oxfordsemantic.jrdfox.Prefixes
import tech.oxfordsemantic.jrdfox.logic.sparql.statement.{Query, SelectQuery}
import tech.oxfordsemantic.jrdfox.client.{
ConnectionFactory,
ServerConnection,
DataStoreConnection
}
import tech.oxfordsemantic.jrdfox.formats.SPARQLParser
import tech.oxfordsemantic.jrdfox.logic.expression.{IRI => RDFox_IRI}
import org.semanticweb.owlapi.model.{IRI => OWL_IRI}
object RDFoxUtil {
implicit def rdfox2owlapi(iri: RDFox_IRI): OWL_IRI = {
OWL_IRI.create(iri.getIRI)
}
implicit def owlapi2rdfox(iri: OWL_IRI): RDFox_IRI = {
RDFox_IRI.create(iri.getIRIString())
}
implicit def owlapi2rdfox(iri: String): RDFox_IRI = {
RDFox_IRI.create(iri)
}
def openConnection(
dataStore: String
): (ServerConnection, DataStoreConnection) = {
/* Create local server connection
*/
val serverUrl = "rdfox:local"
val role = ""
val password = ""
val server =
ConnectionFactory.newServerConnection(serverUrl, role, password)
/* Create datastore connection
*/
val parameters = new HashMap[String, String]()
parameters.put("owl-in-rdf-support", "relaxed")
//parameters.put("equality", "noUNA")
server.createDataStore(dataStore, "par-complex-nn", parameters)
val data = server.newDataStoreConnection(dataStore)
(server, data)
}
def parseQuery(
query: String,
prefixes: Prefixes = RSA.Prefixes
): Option[SelectQuery] = {
val parser = new SPARQLParser(
prefixes,
new StringReader(query)
)
// NOTE: return only conjunctive queries for now (SelectQuery)
parser.parseSingleQuery() match {
case q: SelectQuery => Some(q)
case _ => None
}
}
def submitQuery(
data: DataStoreConnection,
prefixes: Prefixes,
query: String,
answers: Int
): Unit = {
println(s"\nQUERY {\n$query\n}")
val cursor = data.createCursor(
prefixes,
query,
new HashMap[String, String]()
);
var mul = cursor.open()
while (mul > 0) {
print("Answer: ")
for (i <- 0 until answers) {
val res = cursor.getResource(i)
print(s"$res ")
}
println()
mul = cursor.advance()
}
cursor.close();
println(s"QUERY END")
}
def closeConnection(
server: ServerConnection,
data: DataStoreConnection
): Unit = {
server.close();
data.close();
}
} // object RDFoxUtil
|
