public override void VisitSelectClause(SelectClause selectClause, QueryModel queryModel)
{
CurrentEvaluationType = selectClause.GetOutputDataInfo();
switch (_queryMode)
{
case QueryMode.Delete:
VisitDeleteClause(selectClause.Selector);
return;
case QueryMode.Update:
case QueryMode.UpdateVersioned:
VisitUpdateClause(selectClause.Selector);
return;
case QueryMode.Insert:
VisitInsertClause(selectClause.Selector);
return;
}
//This is a standard select query
var visitor = new SelectClauseVisitor(typeof(object[]), VisitorParameters);
visitor.VisitSelector(selectClause.Selector);
if (visitor.ProjectionExpression != null)
{
_hqlTree.AddItemTransformer(visitor.ProjectionExpression);
}
_hqlTree.AddSelectClause(_hqlTree.TreeBuilder.Select(visitor.GetHqlNodes()));
base.VisitSelectClause(selectClause, queryModel);
}
private void VisitDeleteClause(Expression expression)
{
// We only need to check there is no unexpected select, for avoiding silently ignoring them.
var visitor = new SelectClauseVisitor(typeof(object[]), VisitorParameters);
visitor.VisitSelector(expression);
if (visitor.ProjectionExpression != null)
{
throw new InvalidOperationException("Delete is not allowed on projections.");
}
}