private async Task ApplyChangeAsync(
object key,
object entity,
EntityState entityState)
{
var targetPath = Path.AppendFile(key.ToString());
switch (entityState)
{
case EntityState.Deleted:
await AsyncFileSystem.DeleteAsync(targetPath);
break;
case EntityState.Added:
var metadata = EntityMetadata(key, entity, EntityState.Added, null);
using (var stream = await AsyncFileSystem.CreateFileAsync(targetPath))
Serialize(stream, metadata);
break;
case EntityState.Updated:
var updatedMetadata = EntityMetadata(key, entity, EntityState.Updated,
await FindByIdInternalAsync(key));
using (var stream = await AsyncFileSystem.CreateFileAsync(targetPath))
Serialize(stream, updatedMetadata);
break;
}
}
private async Task FlushAsync(List <MetadataEntity> raw)
{
using (var stream = await AsyncFileSystem.CreateFileAsync(Path))
using (var outstream = new StreamWriter(stream))
{
var writer = new JsonTextWriter(outstream);
_listSerializer.WriteJson(writer, raw, _serializer);
}
}