public void SparqlFilterShouldGetPlaced()
{
// given
var query = new SparqlQuery {
QueryType = SparqlQueryType.SelectDistinct
};
query.AddVariable(new SparqlVariable("s", true));
query.RootGraphPattern = new GraphPattern();
var subj = new VariablePattern("s");
var rdfType = new NodeMatchPattern(new UriNode(null, new Uri(RdfSpecsHelper.RdfType)));
var type = new VariablePattern("type");
var triplePattern = new TriplePattern(subj, rdfType, type);
query.RootGraphPattern.AddTriplePattern(triplePattern);
query.RootGraphPattern.AddFilter(new UnaryExpressionFilter(new InFunction(new VariableTerm("type"), new[]
{
new ConstantTerm(new UriNode(null, new Uri("http://example.com/Type1"))),
new ConstantTerm(new UriNode(null, new Uri("http://example.com/Type2"))),
new ConstantTerm(new UriNode(null, new Uri("http://example.com/Type3")))
})));
// when
var algebra = (Distinct)query.ToAlgebra();
// then
Assert.True(algebra.InnerAlgebra is Select);
Assert.True(((Select)algebra.InnerAlgebra).InnerAlgebra is Filter);
}
public void SparqlFormattingOptionalAtRoot()
{
SparqlQuery q = new SparqlQuery {
QueryType = SparqlQueryType.Select
};
q.AddVariable(new SparqlVariable("s", true));
GraphPattern gp = new GraphPattern();
gp.IsOptional = true;
gp.AddTriplePattern(new TriplePattern(new VariablePattern("s"), new VariablePattern("p"), new VariablePattern("o")));
q.RootGraphPattern = gp;
String toStr = q.ToString();
Console.WriteLine("ToString() Form:");
Console.WriteLine(toStr);
Assert.Equal(2, toStr.ToCharArray().Where(c => c == '{').Count());
Assert.Equal(2, toStr.ToCharArray().Where(c => c == '}').Count());
Console.WriteLine();
SparqlFormatter formatter = new SparqlFormatter();
String fmtStr = formatter.Format(q);
Console.WriteLine("SparqlFormatter Form:");
Console.WriteLine(fmtStr);
Assert.Equal(2, fmtStr.ToCharArray().Where(c => c == '{').Count());
Assert.Equal(2, fmtStr.ToCharArray().Where(c => c == '}').Count());
}