C# DbConnection.QueryAsync方法代码示例

        private async Task UpdateUserSocialsAsync(DbConnection context, DbTransaction transaction, User user)
        {
            var userSocials = await context.QueryAsync<UserSocial>("SELECT * FROM UserSocials WHERE Username = @Username",
                new { user.Username }, transaction);

            await context.ExecuteAsync("DELETE FROM UserSocials WHERE Username = @Username and SocialId = @SocialId;",
                userSocials.Where(
                    u => user.Socials.All(s => u.SocialId != s.SocialId)),
                transaction);

            await context.ExecuteAsync(
                "UPDATE UserSocials set Site = @Site, Url = @Url WHERE Username = @Username and SocialId = @SocialId;",
                user.Socials, transaction);

            await context.ExecuteAsync("INSERT UserSocials(Username,Site,Url) VALUES(@Username,@Site,@Url);",
                user.Socials.Where(
                    s => userSocials.All(u => s.Username != u.Username && u.SocialId != s.SocialId)).Select(s => new { user.Username, s.Site, s.Url }),
                transaction);
        }

        private async Task UpdateBreweryMembersAsync(DbConnection context, DbTransaction transaction, Brewery brewery)
        {
            var breweryMembers = await context.QueryAsync<BreweryMember>(
                "SELECT * FROM BreweryMembers WHERE BreweryId = @BreweryId", new { brewery.BreweryId }, transaction);

            await context.ExecuteAsync("DELETE FROM BreweryMembers WHERE BreweryId = @BreweryId and MemberUsername = @MemberUsername;",
                breweryMembers.Where(bm => brewery.Members.All(m => bm.MemberUsername != m.MemberUsername)).Select(bm => new { brewery.BreweryId, bm.MemberUsername }), transaction);

            await context.ExecuteAsync(
                "UPDATE BreweryMembers set Role = @Role, Confirmed = @Confirmed WHERE BreweryId = @BreweryId and MemberUsername = @MemberUsername;",
                brewery.Members.Where(m => breweryMembers.Any(bm => m.MemberUsername == bm.MemberUsername)), transaction);

            await context.ExecuteAsync("INSERT BreweryMembers(BreweryId,MemberUsername,Role,Confirmed) VALUES(@BreweryId,@MemberUsername,@Role,@Confirmed);",
                brewery.Members.Where(m => breweryMembers.All(bm => m.MemberUsername != bm.MemberUsername)).Select(bm => new { brewery.BreweryId, bm.MemberUsername,bm.Role,bm.Confirmed }), transaction);

        }

        private async Task UpdateBrewerySocialsAsync(DbConnection context, DbTransaction transaction, Brewery brewery)
        {
            var brewerySocials = await context.QueryAsync<BrewerySocial>("SELECT * FROM BrewerySocials WHERE BreweryId = @BreweryId",
                new { brewery.BreweryId }, transaction);

            await context.ExecuteAsync("DELETE FROM BrewerySocials WHERE BreweryId = @BreweryId and SocialId = @SocialId;",
                brewerySocials.Where(
                    u => brewery.Socials.All(s => u.SocialId != s.SocialId)),
                transaction);

            await context.ExecuteAsync(
                "UPDATE BrewerySocials set Site = @Site, Url = @Url WHERE BreweryId = @BreweryId and SocialId = @SocialId;",
                brewery.Socials, transaction);

            await context.ExecuteAsync("INSERT BrewerySocials(BreweryId,Site,Url) VALUES(@BreweryId,@Site,@Url);",
                brewery.Socials.Where(
                    s => brewerySocials.All(u => u.SocialId != s.SocialId)).Select(s => new { brewery.BreweryId, s.Site, s.Url }),
                transaction);
        }

        public async Task<List<Tuple<string, IPAddress>>> GetNodeIPMap(DbConnection conn)
        {
            var ipList = await conn.QueryAsync<string, string, Tuple<string, string>>(
                @"Select Cast(NodeID as varchar(50)) NodeID, IPAddress From NodeIPAddresses",
                commandTimeout: QueryTimeoutMs,
                map: Tuple.Create,
                splitOn: "IPAddress");

            var result = new List<Tuple<string, IPAddress>>();
            foreach (var entry in ipList)
            {
                IPAddress addr;
                if (!IPAddress.TryParse(entry.Item2, out addr)) continue;
                result.Add(Tuple.Create(entry.Item1, addr));
            }
            return result;
        }

        private async Task UpdateAromaWheelAsync(DbConnection context, SqlTransaction transaction, Hop hop)
        {
            var aromaWheels = (await context.QueryAsync<HopFlavour>(@"SELECT * FROM HopAromaWheels WHERE HopId = @HopId", new { hop.HopId },
                transaction)).ToList();

            var toDelete = aromaWheels.Where(h => hop.AromaWheel.All(f => f.FlavourId != h.FlavourId));
            await context.ExecuteAsync("DELETE FROM HopAromaWheels WHERE HopId = @HopId and FlavourId = @FlavourId;",
                toDelete.Select(h => new { h.HopId, h.FlavourId }), transaction);

            var toAdd = hop.AromaWheel.Where(h => aromaWheels.All(f => f.FlavourId != h.FlavourId));
            await context.ExecuteAsync(@"INSERT HopAromaWheels(FlavourId, HopId) VALUES(@FlavourId,@HopId);", toAdd.Select(h => new { h.HopId, h.FlavourId }), transaction);

        }

        private async Task UpdateHopSubstituteAsync(DbConnection context, SqlTransaction transaction, Hop hop)
        {
            var hopSubstitutes = (await context.QueryAsync<Substitute>(@"SELECT * FROM Substitute WHERE HopId = @HopId",
                new { hop.HopId }, transaction)).ToList();

            var toDelete = hopSubstitutes.Where(h => hop.Substituts.All(s => s.HopId != h.HopId && h.SubstituteId != s.HopId));
            await context.ExecuteAsync("DELETE FROM Substitute WHERE HopId = @HopId", toDelete, transaction);

            var toAdd = hop.Substituts.Where(h => hopSubstitutes.All(s => s.HopId != h.HopId && h.HopId != s.SubstituteId)).Select(c => new Substitute { HopId = hop.HopId, SubstituteId = c.HopId });
            await context.ExecuteAsync(@"INSERT Substitute(SubstituteId, HopId) VALUES(@SubstituteId,@HopId);", toAdd, transaction);
        }