/// <summary>
/// Formats a SPARQL Aggregate
/// </summary>
/// <param name="agg">SPARQL Aggregate</param>
/// <returns></returns>
protected virtual String FormatAggregate(ISparqlAggregate agg)
{
StringBuilder output = new StringBuilder();
if (SparqlSpecsHelper.IsAggregateFunctionKeyword(agg.Functor))
{
output.Append(agg.Functor);
}
else
{
String aggQName;
if (this._qnameMapper.ReduceToQName(agg.Functor, out aggQName))
{
output.Append(aggQName);
}
else
{
output.Append('<');
output.Append(this.FormatUri(agg.Functor));
output.Append('>');
}
}
output.Append('(');
List <ISparqlExpression> args = agg.Arguments.ToList();
for (int i = 0; i < args.Count; i++)
{
output.Append(this.FormatExpression(args[i]));
if (i < args.Count - 1 && !(args[i] is DistinctModifier))
{
output.Append(", ");
}
}
output.Append(')');
return(output.ToString());
}
