/// <summary>
/// This API supports the Entity Framework Core infrastructure and is not intended to be used
/// directly from your code. This API may change or be removed in future releases.
/// </summary>
public virtual bool Apply(InternalModelBuilder modelBuilder, EntityType type)
{
if (type.HasDefiningNavigation())
{
var entityTypes = modelBuilder.Metadata.GetEntityTypes(type.Name);
var otherEntityType = entityTypes.FirstOrDefault();
if (otherEntityType?.HasDefiningNavigation() == true)
{
var ownership = otherEntityType.FindOwnership();
if (ownership != null &&
entityTypes.Count == 1)
{
using (modelBuilder.Metadata.ConventionDispatcher.StartBatch())
{
var detachedRelationship = InternalEntityTypeBuilder.DetachRelationship(ownership);
var weakSnapshot = InternalEntityTypeBuilder.DetachAllMembers(otherEntityType);
modelBuilder.RemoveEntityType(otherEntityType, ConfigurationSource.Explicit);
detachedRelationship.WeakEntityTypeSnapshot = weakSnapshot;
detachedRelationship.Attach(ownership.PrincipalEntityType.Builder);
}
}
}
}
return(true);
}
private InternalEntityTypeBuilder Entity(
TypeIdentity type,
string definingNavigationName,
EntityType definingEntityType,
ConfigurationSource configurationSource)
{
if (IsIgnored(type, configurationSource))
{
return(null);
}
var clrType = type.Type;
var weakEntityType = clrType == null
? Metadata.FindEntityType(type.Name, definingNavigationName, definingEntityType)
: Metadata.FindEntityType(clrType, definingNavigationName, definingEntityType);
if (weakEntityType == null)
{
var entityType = clrType == null
? Metadata.FindEntityType(type.Name)
: Metadata.FindEntityType(clrType);
IConventionBatch batch = null;
EntityType.Snapshot entityTypeSnapshot = null;
if (entityType != null)
{
if (!configurationSource.Overrides(entityType.GetConfigurationSource()))
{
return(null);
}
batch = ModelBuilder.Metadata.ConventionDispatcher.StartBatch();
entityTypeSnapshot = InternalEntityTypeBuilder.DetachAllMembers(entityType);
Ignore(entityType, configurationSource);
}
if (clrType == null)
{
Metadata.Unignore(type.Name);
weakEntityType = Metadata.AddEntityType(type.Name, definingNavigationName, definingEntityType, configurationSource);
}
else
{
Metadata.Unignore(clrType);
weakEntityType = Metadata.AddEntityType(clrType, definingNavigationName, definingEntityType, configurationSource);
}
if (batch != null)
{
entityTypeSnapshot.Attach(weakEntityType.Builder);
batch.Dispose();
}
}
else
{
weakEntityType.UpdateConfigurationSource(configurationSource);
}
return(weakEntityType?.Builder);
}
