public AggregateExpression GroupConcat(SparqlExpression expression, string separator = " ")
{
GroupConcatAggregate aggregate;
if (separator != " ")
{
aggregate = new GroupConcatAggregate(expression.Expression, Constant(separator).Expression, _distinctAggregate);
}
else
{
aggregate = new GroupConcatAggregate(expression.Expression, _distinctAggregate);
}
return(new AggregateExpression(aggregate));
}
public AggregateExpression GroupConcat(VariableTerm variable, string separator = " ")
{
GroupConcatAggregate aggregate;
if (separator != " ")
{
aggregate = new GroupConcatAggregate(variable, Constant(separator).Expression, _distinctAggregate);
}
else
{
aggregate = new GroupConcatAggregate(variable, _distinctAggregate);
}
return(new AggregateExpression(aggregate));
}