/// <summary>
/// Visits the main from clause.
/// </summary>
/// <param name="fromClause">From clause.</param>
/// <param name="queryModel">The query model.</param>
/// <remarks></remarks>
public override void VisitMainFromClause(MainFromClause fromClause, Remotion.Linq.QueryModel queryModel)
{
var sourceAsConstant = queryModel.MainFromClause.FromExpression as ConstantExpression;
if (sourceAsConstant != null)
{
_queryDescription.SetFromClause("", HierarchyScope.AllOrNone, FromClause.RevisionStatusNotSpecifiedType);
// Tues 1 Nov: _queryDescription.SetResultFilterClause(fromClause.ItemType, ResultFilterType.Sequence, -1);
_queryDescription.SetResultFilterClause(GetResultType(fromClause, queryModel), ResultFilterType.Sequence, -1);
RunCustomModifiers(queryModel);
}
var sourceAsSubQuery = fromClause.FromExpression as SubQueryExpression;
if (sourceAsSubQuery != null)
{
var subQueryModel = sourceAsSubQuery.QueryModel;
RunCustomModifiers(subQueryModel);
}
// If the Where clause is null, we have a request for "get all", but the VisitWhereClause method never runs (thanks Remotion!)
// so let's fake it here
if (!queryModel.BodyClauses.Any())
{
queryModel.BodyClauses.Add(new WhereClause(Expression.Equal(IgnoreExpression, IgnoreExpression)));
}
base.VisitMainFromClause(fromClause, queryModel);
}
/// <summary>
/// Visits the main from clause.
/// </summary>
/// <param name="fromClause">From clause.</param>
/// <param name="queryModel">The query model.</param>
/// <remarks></remarks>
public override void VisitMainFromClause(MainFromClause fromClause, Remotion.Linq.QueryModel queryModel)
{
var sourceAsConstant = queryModel.MainFromClause.FromExpression as ConstantExpression;
if (sourceAsConstant != null)
{
_queryDescription.SetFromClause(HierarchyScope.Indeterminate, FromClause.RevisionStatusNotSpecifiedType);
// Tues 1 Nov: _queryDescription.SetResultFilterClause(fromClause.ItemType, ResultFilterType.Sequence, -1);
//_queryDescription.AddResultFilter(GetResultType(fromClause, queryModel), ResultFilterType.Sequence, -1);
}
RunCustomModifiers(queryModel);
var sourceAsSubQuery = fromClause.FromExpression as SubQueryExpression;
if (sourceAsSubQuery != null)
{
var subQueryModel = sourceAsSubQuery.QueryModel;
RunCustomModifiers(subQueryModel);
// When there is a query like "MyList.Skip(5).Count()" then "MyList.Skip(5)" is the MainFromClause
// and it's represented as a SubQuery, with "Count()" being the single ResultOperator on the outer query
// Since for our purposes we flatten this all because we don't support subqueries, then
// go and visit the ResultOperators of the inner query to add them to our single QueryDescription's
// ResultFilters list to make sure we catch both Skip and Count in this example.
for (int index = 0; index < subQueryModel.ResultOperators.Count; index++)
{
var resultOperator = subQueryModel.ResultOperators[index];
VisitResultOperator(resultOperator, sourceAsSubQuery.QueryModel, index);
}
}
// If the Where clause is null, we have a request for "get all", but the VisitWhereClause method never runs (thanks Remotion!)
// so let's fake it here
if (!queryModel.BodyClauses.Any())
{
queryModel.BodyClauses.Add(new WhereClause(Expression.Equal(IgnoreExpression, IgnoreExpression)));
}
base.VisitMainFromClause(fromClause, queryModel);
}