public static void GetSparqlExpression(Expression expression, SparqlQueryBuilder queryBuilder)
{
var visitor = new SparqlGeneratorSelectExpressionTreeVisitor(queryBuilder);
var resultExpression = visitor.VisitExpression(expression);
if (resultExpression is SelectVariableNameExpression)
{
queryBuilder.AddSelectVariable((resultExpression as SelectVariableNameExpression).Name);
}
}
public static void GetSparqlExpression(Expression expression, SparqlQueryBuilder queryBuilder)
{
var visitor = new SparqlGeneratorSelectExpressionTreeVisitor(queryBuilder);
var resultExpression = visitor.VisitExpression(expression);
if (resultExpression is SelectIdentifierVariableNameExpression)
{
var selectId = resultExpression as SelectIdentifierVariableNameExpression;
var selectVar = queryBuilder.NextVariable();
queryBuilder.AddBindExpression("STRAFTER(STR(?" + selectId.Name + "), " + SparqlQueryBuilder.QuoteLiteralString(selectId.IdentifierPrefix) + ")", selectVar);
queryBuilder.AddSelectVariable(selectVar);
}
else if (resultExpression is SelectVariableNameExpression)
{
queryBuilder.AddSelectVariable((resultExpression as SelectVariableNameExpression).Name);
}
}
public override void VisitSelectClause(Remotion.Linq.Clauses.SelectClause selectClause, QueryModel queryModel)
{
// referenceClaused -> fromCluase1
SparqlGeneratorSelectExpressionTreeVisitor.GetSparqlExpression(selectClause.Selector, _queryBuilder);
base.VisitSelectClause(selectClause, queryModel);
}