/// <summary>
/// Applies the DISTINCT modifier if the Query is a SELECT, otherwise leaves query unchanged (since results from any other query are DISTINCT by default)
/// </summary>
public ISelectBuilder Distinct()
{
switch (_sparqlQueryType)
{
case SparqlQueryType.Select:
_sparqlQueryType = SparqlQueryType.SelectDistinct;
break;
case SparqlQueryType.SelectAll:
_sparqlQueryType = SparqlQueryType.SelectAllDistinct;
break;
case SparqlQueryType.SelectReduced:
_sparqlQueryType = SparqlQueryType.SelectDistinct;
break;
case SparqlQueryType.SelectAllReduced:
_sparqlQueryType = SparqlQueryType.SelectAllDistinct;
break;
}
return(this);
}
private QueryBuilder(SparqlQueryType sparqlQueryType)
{
_sparqlQueryType = sparqlQueryType;
}
internal DescribeBuilder(SparqlQueryType sparqlQueryType) : base(sparqlQueryType)
{
}
protected internal QueryBuilder(SparqlQueryType sparqlQueryType)
{
_sparqlQueryType = sparqlQueryType;
}
/// <summary>
/// Checks whether the Query is a SELECT Query
/// </summary>
/// <param name="type">Query Type</param>
/// <returns></returns>
public static bool IsSelectQuery(SparqlQueryType type)
{
switch (type)
{
case SparqlQueryType.Select:
case SparqlQueryType.SelectAll:
case SparqlQueryType.SelectAllDistinct:
case SparqlQueryType.SelectAllReduced:
case SparqlQueryType.SelectDistinct:
case SparqlQueryType.SelectReduced:
return true;
default:
return false;
}
}
internal SelectBuilder(SparqlQueryType sparqlQueryType)
{
_sparqlQueryType = sparqlQueryType;
}
internal SelectBuilder(SparqlQueryType queryType) : base(queryType)
{
}
/// <summary>
/// Create a new exception with an error string.
/// </summary>
/// <param name="type">SPARQL query type.</param>
public QueryTypeNotSupportedException(SparqlQueryType type)
: base($"Unsupported in the SPARQL query form {type}")
{
}
