Backend/feature/444 Create SPARQL Queries

backend/src/main/java/com/group1/programminglanguagesforum/Services/WikidataService.java

@@ -0,0 +1,81 @@
+package com.group1.programminglanguagesforum.Services;
+
+String queryString =
+        """
+        PREFIX wdt: <http://www.wikidata.org/prop/direct/>
+        PREFIX wd: <http://www.wikidata.org/entity/>
+        PREFIX wikibase: <http://wikiba.se/ontology#>
+        PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
+        PREFIX schema: <http://schema.org/>
+
+        SELECT DISTINCT ?language 
+            (SAMPLE(?languageLabel) AS ?languageLabelS) 
+            (SAMPLE(?description) AS ?descriptionS) 
+            (SAMPLE(?logoImage) AS ?logoImageS)
+            (SAMPLE(?authorLabel) AS ?authorS)
+            (SAMPLE(YEAR(?inceptionYear)) AS ?inceptionYearS)
+            (SAMPLE(?fileExtension) AS ?fileExtensionS)
+        WHERE {
+            ?language wdt:P31 ?class;
+                    wdt:P154 ?logoImage.
+
+            # Include both programming languages and scripting languages
+            VALUES ?class { wd:Q9143 wd:Q12772052 }
+
+            OPTIONAL {
+                ?language schema:description ?description.
+                FILTER((LANG(?description)) = "en")
+            }
+
+            OPTIONAL {
+                ?language rdfs:label ?languageLabel.
+                FILTER((LANG(?languageLabel)) = "en")
+            }
+
+            OPTIONAL {
+                ?language wdt:P178 ?author.
+                ?author rdfs:label ?authorLabel.
+                FILTER((LANG(?authorLabel)) = "en")
+            }
+
+            OPTIONAL {
+                ?language wdt:P571 ?inceptionYear.
+            }
+
+            OPTIONAL {
+                ?language wdt:P1195 ?fileExtension.
+            }
+        }
+        GROUP BY ?language
+        HAVING (BOUND(?languageLabelS))
+
+
+
+
+        SELECT DISTINCT ?paradigm 
+            (SAMPLE(?paradigmLabel) AS ?paradigmLabelS) 
+            (SAMPLE(?description) AS ?descriptionS) 
+            (SAMPLE(?stackExchangeTag) AS ?stackExchangeTagS)
+
+        WHERE {
+            ?paradigm wdt:P31 wd:Q188267.
+
+            OPTIONAL {
+                ?paradigm schema:description ?description.
+                FILTER((LANG(?description)) = "en") 
+            }
+
+            OPTIONAL {
+                ?paradigm rdfs:label ?paradigmLabel.
+                FILTER((LANG(?paradigmLabel)) = "en") 
+            }
+
+            OPTIONAL {
+                ?paradigm wdt:P1482 ?stackExchangeTag. 
+            }
+        }
+        GROUP BY ?paradigm
+        HAVING (BOUND(?paradigmLabelS))
+
+
+        """;