public virtual SelectExpression TryGetQuery([NotNull] IQuerySource querySource)
{
Check.NotNull(querySource, nameof(querySource));
SelectExpression selectExpression;
return(QueriesBySource.TryGetValue(querySource, out selectExpression)
? selectExpression
: QueriesBySource.Values.SingleOrDefault(se => se.HandlesQuerySource(querySource)));
}
/// <summary>
/// Get active ReadOnlyExpression
/// </summary>
/// <param name="querySource"></param>
/// <returns></returns>
public virtual ReadOnlyExpression TryGetQuery([NotNull] IQuerySource querySource)
{
Check.NotNull(querySource, nameof(querySource));
return(QueriesBySource.TryGetValue(querySource, out ReadOnlyExpression roe)
? roe
: QueriesBySource
.Values
.LastOrDefault(e => e.HandlesQuerySource(querySource)));
}
public override SelectExpression TryGetQuery(IQuerySource querySource)
{
SelectExpression selectExpression;
if (QueriesBySource.TryGetValue(querySource, out selectExpression))
{
return(selectExpression);
}
return(QueriesBySource.Values.SingleOrDefault(se => se.HandlesQuerySource(querySource)));
}
public override void VisitQueryModel(QueryModel queryModel)
{
base.VisitQueryModel(queryModel);
if (ContextOptions.FindExtension <SqlServerOptionsExtension>()?.RowNumberPaging == true)
{
var visitor = new RowNumberPagingExpressionVisitor();
SelectExpression mainSelectExpression;
if (QueriesBySource.TryGetValue(queryModel.MainFromClause, out mainSelectExpression))
{
visitor.Visit(mainSelectExpression);
}
foreach (var additionalSource in queryModel.BodyClauses.OfType <IQuerySource>())
{
SelectExpression additionalFromExpression;
if (QueriesBySource.TryGetValue(additionalSource, out additionalFromExpression))
{
visitor.Visit(mainSelectExpression);
}
}
}
}
