public WriteConcernResult Update(T obj, WriteConcern concern = null)
{
ConcurrencyParameters <T> parameters = null;
try
{
parameters = new ConcurrencyParameters <T>(obj, true);
var update = global::MongoDB.Driver.Builders.Update.Replace(parameters.Bson);
var options = new MongoUpdateOptions {
WriteConcern = concern
};
var result = Collection.Update(parameters.QueryWithVersion, update, options);
return(CheckConcurrencyResult(result, parameters));
}
catch (Exception)
{
if (parameters != null)
{
obj.Version = parameters.RequestedVersion;
}
throw;
}
}
public WriteConcernResult Remove(T obj, WriteConcern concern = null)
{
var parameters = new ConcurrencyParameters <T>(obj, false);
var result = Collection.Remove(parameters.QueryWithVersion, RemoveFlags.Single, concern);
return(CheckConcurrencyResult(result, parameters));
}
private WriteConcernResult CheckConcurrencyResult(WriteConcernResult result, ConcurrencyParameters <T> parameters)
{
if (result.DocumentsAffected == 1)
{
return(result);
}
var fields = Fields <T> .Include(x => x.Version);
var existingObject = Collection.FindAs <T>(parameters.QueryById).SetFields(fields).FirstOrDefault();
if (existingObject != null)
{
throw new MongoConcurrencyUpdatedException(parameters.QueryById, parameters.RequestedVersion, existingObject.Version);
}
if (parameters.IsUpdate)
{
throw new MongoConcurrencyDeletedException(parameters.QueryById, parameters.RequestedVersion);
}
return(result);
}
