public SimpleQueryBuilder()
{
itsQuery = new Query();
itsQuery.QueryGroup = new QueryGroupAnd();
itsGroupRequired = new QueryGroupPatterns();
itsGroupOptional = new QueryGroupPatterns();
itsGroupConstraints = new QueryGroupConstraints();
((QueryGroupAnd)itsQuery.QueryGroup).Add(itsGroupRequired);
((QueryGroupAnd)itsQuery.QueryGroup).Add(new QueryGroupOptional(itsGroupOptional));
((QueryGroupAnd)itsQuery.QueryGroup).Add(itsGroupConstraints);
}
public void EqualsComparesGroups()
{
QueryGroupConstraints group1 = new QueryGroupConstraints();
QueryGroupConstraints group2 = new QueryGroupConstraints();
QueryGroupConstraints group3 = new QueryGroupConstraints();
group1.Add(new Constraint(new VariableExpression(new Variable("foo"))));
group2.Add(new Constraint(new VariableExpression(new Variable("foo"))));
group3.Add(new Constraint(new VariableExpression(new Variable("bar"))));
Assert.IsTrue(group1.Equals(group2), "group1 should equal group2");
Assert.IsTrue(!group1.Equals(group3), "group1 should not equal query3");
}
public void GetHashCodeUsesGroups()
{
QueryGroupConstraints group1 = new QueryGroupConstraints();
QueryGroupConstraints group2 = new QueryGroupConstraints();
QueryGroupConstraints group3 = new QueryGroupConstraints();
group1.Add(new Constraint(new VariableExpression(new Variable("foo"))));
group2.Add(new Constraint(new VariableExpression(new Variable("foo"))));
group3.Add(new Constraint(new VariableExpression(new Variable("bar"))));
Assert.IsTrue(group1.GetHashCode() == group2.GetHashCode(), "group1 should have same hash code as group2");
Assert.IsTrue(group1.GetHashCode() != group3.GetHashCode(), "group1 should not have same hash code as query2");
}
public void visit(QueryGroupConstraints group)
{
foreach (SemPlan.Spiral.Core.Constraint constraint in group.Constraints)
{
if (constraint.Expression is IsLiteral && ((IsLiteral)constraint.Expression).SubExpression is VariableExpression)
{
string variableName = ((VariableExpression)((IsLiteral)constraint.Expression).SubExpression).Variable.Name;
itsWhereTerms.Add("(nt_" + variableName + "='p' OR nt_" + variableName + "='t')");
}
else if (constraint.Expression is IsIri && ((IsIri)constraint.Expression).SubExpression is VariableExpression)
{
string variableName = ((VariableExpression)((IsIri)constraint.Expression).SubExpression).Variable.Name;
itsWhereTerms.Add("nt_" + variableName + "='u'");
}
else if (constraint.Expression is IsBlank && ((IsBlank)constraint.Expression).SubExpression is VariableExpression)
{
string variableName = ((VariableExpression)((IsBlank)constraint.Expression).SubExpression).Variable.Name;
itsWhereTerms.Add("nt_" + variableName + "='b'");
}
else if (constraint.Expression is Bound)
{
string variableName = ((Bound)constraint.Expression).Variable.Name;
if (itsVariableFirstMentions.Contains(variableName))
{
itsWhereTerms.Add(itsVariableFirstMentions[variableName] + " IS NOT NULL");
}
else
{
MarkAsNotFeasible(" Bound constraint applied to variable '" + variableName + "' before it is first mentioned");
}
}
else
{
itsIsMappable = false;
}
}
}
public void visit(QueryGroupConstraints group)
{
}
