private static void HandleAdd <TOut>(
Operation operation,
MapDescription map,
string path,
ConversionResult <TOut> conversion)
{
var lastDot = path.LastIndexOf(".", StringComparison.InvariantCulture);
if (lastDot > 0)
{
// target location may not exists, however, only last property may not exists, but all previous should
var existance = path.Substring(0, lastDot);
conversion.Filters.Add(Builders <TOut> .Filter.Exists(existance));
}
object val;
try
{
val = ConvertType(map, operation.value);
}
catch
{
conversion.Errors.Add(new OperationError(string.Format(ConversionErrorFormat, path), OperationErrorType.TypeError, operation));
return;
}
var update = ConstructTypedSet <TOut>(path, map, val);
conversion.Updates.Add(update);
}
private static object ConvertType(MapDescription map, object value)
{
// Actually, i wanted to implement something cool, but after i saw
// https://github.com/aspnet/JsonPatch/blob/98e2d5d4c729770e5e8e146602ab2b6c5bdc439a/src/Microsoft.AspNetCore.JsonPatch/Adapters/ObjectAdapter.cs#L1012
// i decided, that everything is ok :)
var serialized = JsonConvert.SerializeObject(value);
return(BsonSerializer.Deserialize(serialized, map.Type));
}
private static UpdateDefinition <TOut> ConstructTypedSet <TOut>(string path, MapDescription map, object value)
{
// TODO add caching
var genericUpdate = OperationUpdateDefinitionType.MakeGenericType(typeof(TOut), map.Type);
var genericField = GenericStringFieldDefinition.MakeGenericType(typeof(TOut), map.Type);
var fieldDefinition = Activator.CreateInstance(genericField, path, null);
//public OperatorUpdateDefinition(string operatorName, FieldDefinition<TDocument, TField> field, TField value)
var updateDefinition = Activator.CreateInstance(genericUpdate, "$set", fieldDefinition, value);
return((UpdateDefinition <TOut>)updateDefinition);
}
private static void HandleRemove <TOut>(
Operation op,
MapDescription map,
string path,
ConversionResult <TOut> conversion)
{
if (map.IsIndexer)
{
conversion.Errors.Add(new OperationError(NotSupportedByMongo, OperationErrorType.NotSupported, op));
return;
}
var filter = Builders <TOut> .Filter.Exists(new StringFieldDefinition <TOut>(path));
conversion.Filters.Add(filter);
conversion.Updates.Add(Builders <TOut> .Update.Unset(path));
}
private static void HandleReplace <TOut>(
Operation op,
MapDescription map,
string path,
ConversionResult <TOut> conversion)
{
var val = op.value;
try
{
val = ConvertType(map, val);
}
catch
{
conversion.Errors.Add(new OperationError(string.Format(ConversionErrorFormat, path), OperationErrorType.TypeError, op));
return;
}
var filter = Builders <TOut> .Filter.Exists(new StringFieldDefinition <TOut>(path));
var update = ConstructTypedSet <TOut>(path, map, val);
conversion.Filters.Add(filter);
conversion.Updates.Add(update);
}