public async Task <IList <IEventBase <K> > > GetListAsync(K stateId, Int64 startVersion, Int64 endVersion, DateTime?startTime = null)
{
var originList = new List <SqlEvent>((int)(endVersion - startVersion));
await Task.Run(async() =>
{
var tableList = await tableInfo.GetTableList(startTime);
using (var conn = tableInfo.CreateConnection() as NpgsqlConnection)
{
await conn.OpenAsync();
foreach (var table in tableList)
{
var sql = $"COPY (SELECT typecode,data from {table.Name} WHERE stateid='{stateId.ToString()}' and version>{startVersion} and version<={endVersion} order by version asc) TO STDOUT (FORMAT BINARY)";
using (var reader = conn.BeginBinaryExport(sql))
{
while (reader.StartRow() != -1)
{
originList.Add(new SqlEvent {
TypeCode = reader.Read <string>(NpgsqlDbType.Varchar), Data = reader.Read <byte[]>(NpgsqlDbType.Bytea)
});
}
}
}
}
}).ConfigureAwait(false);
var list = new List <IEventBase <K> >(originList.Count);
foreach (var origin in originList)
{
if (MessageTypeMapper.EventTypeDict.TryGetValue(origin.TypeCode, out var type))
{
using (var ms = new MemoryStream(origin.Data))
{
if (Serializer.Deserialize(type, ms) is IEventBase <K> evt)
{
list.Add(evt);
}
}
}
}
return(list.OrderBy(v => v.Version).ToList());
}
public async Task <IList <IEventBase <K> > > GetListAsync(K stateId, Int64 startVersion, Int64 endVersion, DateTime?startTime = null)
{
var tableList = await tableInfo.GetTableList(startTime);
var list = new List <IEventBase <K> >();
Int64 readVersion = 0;
using (var conn = tableInfo.CreateConnection())
{
foreach (var table in tableList)
{
if (!oneListSqlDict.TryGetValue(table.Name, out var sql))
{
sql = $"SELECT typecode,data from {table.Name} WHERE stateid=@StateId and version>@Start and version<=@End order by version asc";
oneListSqlDict.TryAdd(table.Name, sql);
}
var sqlEventList = await conn.QueryAsync <SqlEvent>(sql, new { StateId = stateId.ToString(), Start = startVersion, End = endVersion });
foreach (var sqlEvent in sqlEventList)
{
var type = MessageTypeMapper.GetType(sqlEvent.TypeCode);
using (var ms = new MemoryStream(sqlEvent.Data))
{
if (Serializer.Deserialize(type, ms) is IEventBase <K> evt)
{
readVersion = evt.Version;
if (readVersion <= endVersion)
{
list.Add(evt);
}
}
}
}
if (readVersion >= endVersion)
{
break;
}
}
}
return(list);
}