Added number of annotations to pipeline explanations

src/main/java/com/wse/qanaryexplanationservice/services/ExplanationService.java

@@ -150,7 +150,7 @@ public String getComposedExplanation(String graph, String component) throws IOEx
         String explanation = null;
         String inputExplanation = null;
         String outputExplanation = null;
-        if (component == null) {
+        if (component == null) { // Pipeline explanation
             inputExplanation = explainPipelineInput(graph);
             outputExplanation = explainPipelineOutput(graph);
         } else {

src/main/resources/queries/select_pipeline_information.rq

@@ -1,9 +1,18 @@
+PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
+PREFIX qa: <http://www.wdaqua.eu/qa#>
+PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
+PREFIX urn: <http://fliqz.com/>
 PREFIX oa: <http://www.w3.org/ns/openannotation/core/>
 PREFIX owl: <http://www.w3.org/2002/07/owl#>
 
-SELECT DISTINCT ?component ?questionId
+SELECT (COUNT(?s) AS ?annotations) ?component ?questionId
 FROM ?graph
 WHERE {
     ?s oa:annotatedBy ?component .
-	?questionId owl:sameAs <urn:qanary:currentQuestion> .
-}
+    ?s rdf:type ?type .
+    FILTER NOT EXISTS { ?type rdfs:subClassOf qa:AnnotationOfLog }
+    OPTIONAL {
+        ?questionId owl:sameAs <urn:qanary:currentQuestion> .
+    }
+}
+GROUP BY ?component ?questionId