private static IEnumerable <MemberMetadataResult> GetAllResults(MemberMetadataResult result)
{
if (result.ChildrenResults.Count == 0)
{
yield return(result);
}
else
{
foreach (var childResult in result.ChildrenResults)
{
foreach (var childChildrenResult in GetAllResults(childResult))
{
yield return(childChildrenResult);
}
}
}
}
private static bool TryGetAllMemberMetadata(
Expression expression,
Stack <MemberMetadata> memberPaths,
System.Type convertType,
bool hasIndexer,
out MemberMetadataResult results)
{
var extractor = new MemberMetadataExtractor(memberPaths, convertType, hasIndexer);
extractor.Accept(expression);
results = extractor._entityName != null || extractor._childrenResults.Count > 0
? new MemberMetadataResult(
extractor._childrenResults,
extractor._memberPaths,
extractor._entityName,
extractor._convertType)
: null;
return(results != null);
}
private static bool ProcessMembersMetadataResult(
MemberMetadataResult metadataResult,
ISessionFactoryImplementor sessionFactory,
out IType mappedType,
out IEntityPersister entityPersister,
out IAbstractComponentType component,
out string memberPath)
{
if (!TryGetEntityPersister(metadataResult.EntityName, null, sessionFactory, out var currentEntityPersister))
{
// Failed to find the starting entity name, due to:
// - Querying a type that is not related to any entity e.g. s.Query<NotRelatedType>().Where(a => a.Type == "A")
memberPath = null;
mappedType = null;
entityPersister = null;
component = null;
return(false);
}
if (metadataResult.MemberPaths.Count == 0) // The expression do not contain any member expressions
{
if (metadataResult.ConvertType != null)
{
mappedType = TryGetEntityPersister(
currentEntityPersister,
metadataResult.ConvertType,
sessionFactory,
out var convertPersister)
? convertPersister.EntityMetamodel.EntityType // ((Subclass)q)
: TypeFactory.GetDefaultTypeFor(metadataResult.ConvertType); // ((NotMapped)q)
}
else
{
mappedType = currentEntityPersister.EntityMetamodel.EntityType; // q
}
memberPath = null;
component = null;
entityPersister = currentEntityPersister;
return(mappedType != null);
}
// If there was a cast right after the constant expression that contains the IEntityNameProvider instance, we have
// to update the entity persister according to it, otherwise use the value returned by TryGetAllMemberMetadata method.
if (metadataResult.ConvertType != null)
{
if (!TryGetEntityPersister(
currentEntityPersister,
metadataResult.ConvertType,
sessionFactory,
out var convertPersister)) // ((NotMapped)q).Id
{
memberPath = null;
mappedType = null;
entityPersister = null;
component = null;
return(false);
}
currentEntityPersister = convertPersister; // ((Subclass)q).Id
}
return(TraverseMembers(
sessionFactory,
metadataResult.MemberPaths,
currentEntityPersister,
out mappedType,
out entityPersister,
out component,
out memberPath));
}
