private async Task IncludeAsync(
object entity,
IReadOnlyList <INavigation> navigationPath,
IReadOnlyList <AsyncRelatedEntitiesLoader> relatedEntitiesLoaders,
CancellationToken cancellationToken,
int currentNavigationIndex,
bool queryStateManager)
{
if (entity == null ||
currentNavigationIndex == navigationPath.Count)
{
return;
}
var navigation = navigationPath[currentNavigationIndex];
var keyComparer = IncludeCore(entity, navigation);
var key = navigation.GetTargetType().FindPrimaryKey();
LoadNavigationProperties(
entity,
navigationPath,
currentNavigationIndex,
await AsyncEnumerableExtensions.Select(relatedEntitiesLoaders[currentNavigationIndex](keyComparer), async(eli, ct) =>
{
var targetEntity = GetEntity(key, eli, queryStateManager, throwOnNullKey: false);
await IncludeAsync(
targetEntity,
navigationPath,
relatedEntitiesLoaders,
ct,
currentNavigationIndex + 1,
queryStateManager);
return(targetEntity);
})
.Where(e => e != null)
.ToList(cancellationToken));
}
private async Task IncludeAsync(
object entity,
IReadOnlyList <INavigation> navigationPath,
IReadOnlyList <AsyncRelatedEntitiesLoader> relatedEntitiesLoaders,
CancellationToken cancellationToken,
int currentNavigationIndex,
bool queryStateManager)
{
if (entity == null ||
currentNavigationIndex == navigationPath.Count)
{
return;
}
EntityKey primaryKey;
Func <ValueBuffer, EntityKey> relatedKeyFactory;
var targetEntityType
= IncludeCore(
entity,
navigationPath[currentNavigationIndex],
out primaryKey,
out relatedKeyFactory);
var keyProperties
= targetEntityType.GetPrimaryKey().Properties;
var entityKeyFactory
= _entityKeyFactorySource
.GetKeyFactory(targetEntityType.GetPrimaryKey());
LoadNavigationProperties(
entity,
navigationPath,
currentNavigationIndex,
await AsyncEnumerableExtensions.Select(relatedEntitiesLoaders[currentNavigationIndex](primaryKey, relatedKeyFactory), async(eli, ct) =>
{
var entityKey
= entityKeyFactory
.Create(keyProperties, eli.ValueBuffer);
object targetEntity = null;
if (entityKey != EntityKey.InvalidEntityKey)
{
targetEntity
= GetEntity(
targetEntityType,
entityKey,
eli,
queryStateManager);
}
await IncludeAsync(
targetEntity,
navigationPath,
relatedEntitiesLoaders,
ct,
currentNavigationIndex + 1,
queryStateManager);
return(targetEntity);
})
.Where(e => e != null)
.ToList(cancellationToken));
}
