public ContentSerializer(Type type, MongoDatabaseProvider database, IProxyFactory proxies)
{
this.database = database;
classMap = BsonClassMap.LookupClassMap(type);
serializer = new BsonClassMapSerializer(classMap);
this.proxies = proxies;
}
public static List <BsonDocument> ApplyLookup <TSource>(this IFindFluent <TSource, TSource> findFluent, FilterDefinition <TSource> filterDefinition)
{
var bsonClassMap = new BsonClassMap(typeof(TSource));
bsonClassMap.AutoMap();
bsonClassMap.Freeze();
var serializer = new BsonClassMapSerializer <TSource>(bsonClassMap);
var bsonDocument = filterDefinition.Render(serializer, new BsonSerializerRegistry());
var propertyInfo = typeof(TSource).GetProperty("Lookup");
if (propertyInfo == null)
{
return(new List <BsonDocument>());
}
var lookups = (Dictionary <string, EntityLookup>)propertyInfo.GetValue("Lookup");
var bsonDocuments = new List <BsonDocument>();
foreach (var lookup in lookups)
{
bsonDocuments.Add(new BsonDocument
{
{
"$lookup", new BsonDocument
{
{ "from", lookup.Value.From }, { "foreignField", lookup.Value.ForeignField },
{ "localField", lookup.Value.LocalField }, { "as", lookup.Value.As }
}
}
});
bsonDocuments.Add(new BsonDocument
{
{ "$unwind", new BsonDocument {
{ "path", $"${lookup.Value.As}" }, { "preserveNullAndEmptyArrays", true }
} }
});
}
bsonDocuments.Insert(0, new BsonDocument {
{ "$match", bsonDocument }
});
return(bsonDocuments);
}
