public static FilterDefinition <TDocument> EqOrNull <TDocument, TField>(
this FilterDefinitionBuilder <TDocument> builder,
Expression <Func <TDocument, object?> > field,
TField value)
{
if (value is null)
{
return(builder.Type(field, BsonType.Null));
}
return(builder.Eq(field, value));
}
public object Type(string property, DataType valueType)
{
return(InternalBuilder.Type(property, BsonTypeMapping[valueType]));
}
//
// 摘要:
// Tests that the type of the named element is equal to some type (see $type).
//
// 参数:
// name:
// The name of the element to test.
//
// type:
// The type to compare to.
//
// 返回结果:
// The builder (so method calls can be chained).
public static FilterDefinition <BsonDocument> Type(string name, BsonType type)
{
return(filter.Type(name, type));
}
