Added axiom based RDFS forard rule reasoner stub

Author: patrickwestphal

sansa-inference-spark/src/main/scala/net/sansa_stack/inference/spark/forwardchaining/axioms/ForwardRuleReasonerRDFS.scala

@@ -0,0 +1,26 @@
+package net.sansa_stack.inference.spark.forwardchaining.axioms
+
+import net.sansa_stack.inference.utils.Logging
+import org.apache.spark.SparkContext
+import org.apache.spark.rdd.RDD
+import org.semanticweb.owlapi.model.OWLAxiom
+
+/**
+  * A forward chaining implementation for the RDFS entailment regime that works
+  * on OWL axioms
+  *
+  * @param sc The Apache Spark context
+  * @param parallelism The degree of parallelism
+  */
+class ForwardRuleReasonerRDFS(sc: SparkContext, parallelism: Int = 2) extends Logging {
+
+  def apply(sc: SparkContext, parallelism: Int = 2): ForwardRuleReasonerRDFS =
+    new ForwardRuleReasonerRDFS(sc, parallelism)
+
+  /**
+    * TODO: To be implemented
+    */
+  def apply(axioms: RDD[OWLAxiom]): RDD[OWLAxiom] = {
+    axioms
+  }
+}