internal QuerySpec CreateQuerySpec(FilterSpec filter, ScalarSpec scalarSpec = null, int? skip = null, int? take = null, SortOrderSpec sortSpec = null)
{
if (DataProvider.SupportsQueryTranslation())
return DataProvider.CreateQuerySpec(filter, scalarSpec, sortSpec, skip, take, Schema);
var querySpec = new QuerySpec(new CodeQuerySpec(), null);
var codeQuerySpec = (CodeQuerySpec) querySpec.Code;
if (filter != null)
foreach (var expression in filter.Expressions)
codeQuerySpec.AddFilter(Schema, expression);
if (sortSpec != null)
foreach (var expression in sortSpec.Expressions)
codeQuerySpec.AddSort(Schema, expression.Expression, expression.SortOrder);
if (scalarSpec != null)
codeQuerySpec.AddScalar(Schema, scalarSpec.Expression);
codeQuerySpec.Skip = skip;
codeQuerySpec.Take = take;
return querySpec;
}
protected internal IEnumerable<object> GetRelationObjects(QuerySpec filter, OrmSchema.Relation parentRelation, object parentObject)
{
var objects = from o in DataProvider.GetObjects(filter.Native,Schema)
select Vx.WithLoadedRelations(Schema.UpdateObject(Activator.CreateInstance(Schema.ObjectType), o),Schema.DatasetRelations) ;
if (parentRelation?.ReverseRelation != null)
objects = from o in objects select parentRelation.ReverseRelation.SetField(o, parentObject);
if (filter.Code != null)
objects = from o in objects where filter.Code.IsFilterMatch(o) select o;
return objects;
}