/// <summary>
/// Define a subdocument (or a list of) as a reference
/// </summary>
public EntityBuilder <T> DbRef <K>(Expression <Func <T, K> > property, string collectionName)
{
if (string.IsNullOrEmpty(collectionName))
{
throw new ArgumentNullException("collectionName");
}
return(this.GetProperty(property, (p) =>
{
var typeRef = typeof(K);
p.IsDbRef = true;
if (Reflection.IsList(typeRef))
{
var itemType = typeRef.IsArray ? typeRef.GetElementType() : Reflection.UnderlyingTypeOf(typeRef);
var mapper = _mapper.GetPropertyMapper(itemType);
RegisterDbRefList(p, collectionName, typeRef, itemType, mapper);
}
else
{
var mapper = _mapper.GetPropertyMapper(typeRef);
RegisterDbRef(p, collectionName, typeRef, mapper);
}
}));
}
internal EntityBuilder(BsonMapper mapper)
{
LitePlatform.ThrowIfNotInitialized();
_mapper = mapper;
_prop = mapper.GetPropertyMapper(typeof(T));
}
/// <summary>
/// Get a field name passing mapper type and returns property type
/// </summary>
private string GetTypeField(Type type, string property, out Type propertyType)
{
// lets get mapping bettwen .NET class and BsonDocument
var map = _mapper.GetPropertyMapper(type);
PropertyMapper prop;
if (map.TryGetValue(property, out prop))
{
propertyType = prop.PropertyType;
return(prop.FieldName);
}
else
{
throw LiteException.PropertyNotMapped(property);
}
}
/// <summary>
/// Get a bson string field based on class PropertyInfo using BsonMapper class
/// Support Name1.Name2 dotted notation
/// </summary>
private string GetBsonField(string property)
{
var parts = property.Split('.');
var fields = new string[parts.Length];
var type = _type;
var isdbref = false;
PropertyMapper prop;
// loop "first.second.last"
for (var i = 0; i < parts.Length; i++)
{
var map = _mapper.GetPropertyMapper(type);
var part = parts[i];
if (map.TryGetValue(part, out prop))
{
type = prop.PropertyType;
fields[i] = prop.FieldName;
if (prop.FieldName == "_id" && isdbref)
{
isdbref = false;
fields[i] = "$id";
}
// if this property is DbRef, so if next property is _id, change to $id
if (prop.IsDbRef)
{
isdbref = true;
}
}
else
{
throw LiteException.PropertyNotMapped(property);
}
}
return(string.Join(".", fields));
}
internal EntityBuilder(BsonMapper mapper)
{
_mapper = mapper;
_prop = mapper.GetPropertyMapper(typeof(T));
}