public static string Rank(this Uri uri, Uri endPointUri)
{
var endpoint = new SparqlRemoteEndpoint(endPointUri);
var querySb = new StringBuilder();
querySb.AppendLine(Prefixes.GetSparqlPrefix("rdfs"));
querySb.AppendLine($"select ?rank");
querySb.AppendLine($"where {{");
querySb.AppendLine($" <{uri}> <http://purl.obolibrary.org/obo/ncbitaxon#has_rank> ?r .");
querySb.AppendLine($" ?r rdfs:label ?rank .");
querySb.AppendLine($"}}");
var results = endpoint.QueryWithResultSet(querySb.ToString());
if (results.Count != 1)
{
throw new Exception("Unexpected results.");
}
results[0].TryGetValue("rank", out var node);
if (!(node is LiteralNode literalNode))
{
throw new Exception("Unexpected results.");
}
return(literalNode.Value);
}
public static List<KeyValuePair<Uri, string>> StaticSearch(string word, Uri endPointUri)
{
var endpoint = new SparqlRemoteEndpoint(endPointUri);
var querySb = new StringBuilder();
querySb.AppendLine(Prefixes.GetSparqlPrefix("rdfs"));
querySb.AppendLine($"select ?subject");
querySb.AppendLine($"where {{");
querySb.AppendLine($" ?subject rdfs:label \"{word.Replace("\r", "").Replace("\n", "")}\"");
querySb.AppendLine($"}}");
var query = querySb.ToString();
var results = endpoint.QueryWithResultSet(query);
var list = new List<KeyValuePair<Uri, string>>();
foreach (var result in results)
{
if (result.TryGetValue<UriNode>("subject", out var subjectNode))
{
list.Add(new KeyValuePair<Uri, string>(subjectNode.Uri, word));
}
}
return list;
}
/// <summary>
/// Searches for nodes that have an rdfs:label containing a given string.
/// </summary>
/// <param name="word">The string the label has to contain.</param>
/// <param name="endPointUri">The SPARQL end-point.</param>
/// <returns></returns>
public static List<KeyValuePair<Uri, string>> ContainsSearch(string word, Uri endPointUri)
{
var endpoint = new SparqlRemoteEndpoint(endPointUri);
var querySb = new StringBuilder();
querySb.AppendLine(Prefixes.GetSparqlPrefix("rdfs"));
querySb.AppendLine($"select ?subject ?label");
querySb.AppendLine($"where {{");
querySb.AppendLine($" ?subject rdfs:label ?label");
querySb.AppendLine($" filter contains(lcase(str(?label)), '{word.ToLower()}')");
querySb.AppendLine($"}}");
var results = endpoint.QueryWithResultSet(querySb.ToString());
var list = new List<KeyValuePair<Uri, string>>();
foreach (var result in results)
{
if (result.TryGetValue<UriNode>("subject", out var subjectNode) &&
result.TryGetValue<LiteralNode>("label", out var labelNode))
{
list.Add(new KeyValuePair<Uri, string>(subjectNode.Uri, labelNode.Value));
}
}
return list;
}
public static string Label(this Uri uri, Uri endPointUri)
=> uri.GetLiteralValue(Prefixes.GetUri("rdfs", "label"), endPointUri);