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/*
* Copyright 2020, 2021 KRR Oxford
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package uk.ac.ox.cs.rsacomb
import java.io.File
import java.util.HashMap
import scala.collection.JavaConverters._
import tech.oxfordsemantic.jrdfox.client.UpdateType
import tech.oxfordsemantic.jrdfox.logic.expression.{IRI, Term}
import tech.oxfordsemantic.jrdfox.logic.sparql.statement.SelectQuery
import util.{Logger, RDFoxUtil, RSA}
import sparql.ConjunctiveQuery
case class RSAOption[+T](opt: T) {
def get[T]: T = opt.asInstanceOf[T]
}
object RSAConfig {
type Config = Map[Symbol, RSAOption[Any]]
private implicit def toRSAOption[T](opt: T) = RSAOption[T](opt)
/** Help message */
private val help: String = """
rsacomb - combined approach for CQ answering for RSA ontologies.
USAGE
rsacomb [OPTIONS] <ontology> [<data> ...]
-h | -? | --help
print this help message
-q <file> | --query <file>
path to a file containing a single SPARQL query. If no query
is provided, only the approximation to RSA will be performed.
<ontology>
file containing the ontology
<data>
one or more data files
"""
/** Default config values */
private val default: Config = Map.empty
/** Utility to exit the program with a custom message on stderr.
*
* The program will exit with error code 1 after printing the help
* message.
*
* @param msg message printed to stderr.
*/
private def exit(msg: String): Nothing = {
System.err.println(msg)
System.err.println()
System.err.println(help)
sys.exit(1)
}
/** Parse arguments with default options
*
* @param args arguments list
* @return map of config options
*/
def parse(args: List[String]): Config = parse(args, default)
/** Parse arguments
*
* @param args arguments list
* @param config default configuration
* @return map of config options
*/
def parse(args: List[String], config: Config): Config = {
args match {
case flag @ ("-h" | "-?" | "--help") :: _ => {
println(help)
sys.exit(0)
}
case flag @ ("-q" | "--query") :: _query :: tail => {
val query = new File(_query)
if (!query.isFile)
exit(s"'$query' is not a valid filename.")
parse(tail, config ++ Map('query -> query))
}
case _ontology :: _data => {
val ontology = new File(_ontology)
val data = _data.map(new File(_))
(ontology :: data) foreach { (file) =>
if (!file.isFile)
exit(s"'$file' is not a valid filename.")
}
finalise(config ++ Map('ontology -> ontology, 'data -> data))
}
case a => exit(s"Invalid sequence of arguments '${a.mkString(" ")}'.")
}
}
/** Perform final checks on parsed options */
private def finalise(config: Config): Config = config
}
/** Main entry point to the program */
object RSAComb extends App {
/* Command-line options */
val config = RSAConfig.parse(args.toList)
val ontology = RSAOntology(
config('ontology).get[File],
config('data).get[List[File]]: _*
)
val rsa = ontology.toRSA()
ontology.statistics()
if (config contains 'query) {
val query =
RDFoxUtil.loadQueryFromFile(config('query).get[File].getAbsoluteFile)
ConjunctiveQuery.parse(query) match {
case Some(query) => {
// Retrieve answers
val answers = rsa ask query
Logger.print(s"$answers", Logger.VERBOSE)
Logger print s"Number of answers: ${answers.length} (${answers.lengthWithMultiplicity})"
// Retrieve unfiltered answers
val unfiltered = rsa.queryDataStore(
"""
SELECT (count(?K) as ?COUNT)
WHERE {
?K a rsa:QM .
}
""",
RSA.Prefixes
)
unfiltered.foreach((u) =>
Logger print s"Number of unfiltered answers: ${u.head._2}"
)
}
case None =>
throw new RuntimeException("Submitted query is not conjunctive")
}
}
}
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