private NewExpression CreateEntityInfoExpression(IEntityType entityType, INavigation navigation)
{
var valueBufferFactory = ValueBufferFactoryFactory.Create(entityType);
var materializationContextParameter
= Expression.Parameter(typeof(MaterializationContext), "materializationContext");
var materializer = Expression.Lambda(_entityMaterializerSource
.CreateMaterializeExpression(
entityType, materializationContextParameter), materializationContextParameter);
var nestedEntities = new List <Expression>();
foreach (var ownedNavigation in entityType.GetNavigations())
{
var fk = ownedNavigation.ForeignKey;
if (!fk.IsOwnership ||
ownedNavigation.IsDependentToPrincipal() ||
fk.DeclaringEntityType.IsDocumentRoot())
{
continue;
}
nestedEntities.Add(CreateEntityInfoExpression(fk.DeclaringEntityType, ownedNavigation));
}
var nestedEntitiesExpression = nestedEntities.Count == 0
? (Expression)Expression.Constant(null, typeof(IList <EntityInfo>))
: Expression.ListInit(Expression.New(typeof(List <EntityInfo>)),
nestedEntities.Select(n => Expression.ElementInit(_listAddMethodInfo, n)));
return(Expression.New(
EntityInfo.ConstructorInfo,
Expression.Constant(navigation, typeof(INavigation)),
Expression.Constant(entityType.FindPrimaryKey()),
valueBufferFactory,
materializer,
nestedEntitiesExpression));
}
private NewExpression CreateEntityInfoExpression(IEntityType entityType, INavigation navigation)
{
var usedProperties = new List <IProperty>();
var materializer = CreateMaterializerExpression(entityType, usedProperties, out var indexMap);
var valueBufferFactory = ValueBufferFactoryFactory.Create(usedProperties);
var nestedEntities = new List <Expression>();
foreach (var ownedNavigation in entityType.GetNavigations().Concat(entityType.GetDerivedNavigations()))
{
var fk = ownedNavigation.ForeignKey;
if (!fk.IsOwnership ||
ownedNavigation.IsDependentToPrincipal() ||
fk.DeclaringEntityType.IsDocumentRoot())
{
continue;
}
nestedEntities.Add(CreateEntityInfoExpression(fk.DeclaringEntityType, ownedNavigation));
}
var nestedEntitiesExpression = nestedEntities.Count == 0
? (Expression)Expression.Constant(null, typeof(IList <EntityInfo>))
: Expression.ListInit(
Expression.New(typeof(List <EntityInfo>)),
nestedEntities.Select(n => Expression.ElementInit(_listAddMethodInfo, n)));
return(Expression.New(
EntityInfo.ConstructorInfo,
Expression.Constant(navigation, typeof(INavigation)),
Expression.Constant(entityType.FindPrimaryKey(), typeof(IKey)),
valueBufferFactory,
materializer,
Expression.Constant(indexMap, typeof(Dictionary <Type, int[]>)),
nestedEntitiesExpression));
}
