public void DoIt(Document doc)
{
string dbFilePath = (new PROJECT()).GetDatabasePath(doc);
string dbTmpFilePath = (new PROJECT()).GetTmpDatabasePath(doc);
if (File.Exists(dbFilePath))
{
File.Copy(dbFilePath, dbTmpFilePath, true);
}
else
{
DbControl <DBRoadway> tmpdb = new DbControl <DBRoadway>(dbTmpFilePath, "CustomEntities");
tmpdb.Insert(new DBRoadway());
tmpdb.Delete(LiteDB.Query.And(LiteDB.Query.EQ("StartPoint", null), LiteDB.Query.EQ("EndPoint", null)));
}
}