First Gitea Version of sparql.R

sparql.R

@@ -0,0 +1,56 @@
+library("SPARQL")
+library("stringi")
+
+### Gets the bibliographicCitations which are currently in the db ##################
+
+read_current_geoera_lit_db <- function() {
+  
+  ## http verwenden - https funktioniert nicht ##
+  endpoint = "http://resource.geolba.ac.at/PoolParty/sparql/geoera"
+  
+  query =
+    "PREFIX skos:<http://www.w3.org/2004/02/skos/core#>
+PREFIX dcterms:<http://purl.org/dc/terms/>
+select *
+where {
+?uri a skos:Concept; skos:prefLabel ?L; dcterms:bibliographicCitation ?citation . 
+filter(regex(str(?uri),\"/ref/\")) filter(lang(?L)=\"en\")
+optional {?uri dcterms:source ?downloadLink}
+}
+order by ?L
+"
+
+
+qd <- SPARQL(endpoint,query)
+inDB <- qd$results
+
+for(j in 1:length(inDB[1,])){
+  
+  for(i in 1:length(inDB[,j])){
+    Encoding(inDB[i,j]) = "UTF-8"
+  }
+}
+
+
+pfad = paste("inDB-",format(Sys.Date(), "%Y_%m_%d"),".xlsx", sep="")
+
+write_xlsx(inDB, pfad)
+
+}
+
+
+get_current_geoera_lit_db <- function() {
+  
+  pfad = paste("inDB-",format(Sys.Date(), "%Y_%m_%d"),".xlsx", sep="")
+  
+  if(file.exists(pfad)){
+    inDB = read_excel(pfad)
+    return(inDB)
+  }
+  else {
+    read_current_geoera_lit_db()
+    
+    get_current_geoera_lit_db()
+  }
+  
+}