public MongoPersistenceEngine(MongoDatabase store, IDocumentSerializer serializer, MongoPersistenceOptions options)
{
if (store == null)
{
throw new ArgumentNullException("store");
}
if (serializer == null)
{
throw new ArgumentNullException("serializer");
}
if (options == null)
{
throw new ArgumentNullException("options");
}
_store = store;
_serializer = serializer;
_options = options;
// set config options
_commitSettings = _options.GetCommitSettings();
_snapshotSettings = _options.GetSnapshotSettings();
_streamSettings = _options.GetStreamSettings();
_insertCommitWriteConcern = _options.GetInsertCommitWriteConcern();
_getLastCheckPointNumber = () => TryMongo(() =>
{
var max = PersistedCommits
.FindAll()
.SetFields(Fields.Include(MongoCommitFields.CheckpointNumber))
.SetSortOrder(SortBy.Descending(MongoCommitFields.CheckpointNumber))
.SetLimit(1)
.FirstOrDefault();
return(max != null ? max[MongoCommitFields.CheckpointNumber].AsInt64 : 0L);
});
_getNextCheckpointNumber = () => new LongCheckpoint(_getLastCheckPointNumber() + 1L);
_updateScript = new BsonJavaScript("function (x){ return insertCommit(x);}");
_checkpointZero = new LongCheckpoint(0);
}
