public async Task <EnvironmentClaimGenerator> QueryByName(string name) { EnvironmentClaimGenerator generator = null; DBTransactionHelper.SqlTransactionWork(DBTypes.SqlServer, true, false, _contextConnectionFactory.CreateReadForContext(), async(conn, transaction) => { SqlTransaction sqlTran = null; if (transaction != null) { sqlTran = (SqlTransaction)transaction; } await using (SqlCommand commond = new SqlCommand() { Connection = (SqlConnection)conn, CommandType = CommandType.Text, CommandText = string.Format(@"select {0} from EnvironmentClaimGenerator where [name]=@name", StoreHelper.GetEnvironmentClaimGeneratorSelectFields(string.Empty)), Transaction = sqlTran }) { var parameter = new SqlParameter("@name", SqlDbType.VarChar, 150) { Value = name }; commond.Parameters.Add(parameter); await commond.PrepareAsync(); SqlDataReader reader = null; await using (reader = await commond.ExecuteReaderAsync()) { if (await reader.ReadAsync()) { generator = new EnvironmentClaimGenerator(); StoreHelper.SetEnvironmentClaimGeneratorSelectFields(generator, reader, string.Empty); } await reader.CloseAsync(); } } }); return(generator); }
public async Task <QueryResult <EnvironmentClaimGenerator> > QueryByPage(string name, int page, int pageSize) { QueryResult <EnvironmentClaimGenerator> result = new QueryResult <EnvironmentClaimGenerator>(); //获取只读连接字符串 var strConn = _contextConnectionFactory.CreateReadForContext(); await DBTransactionHelper.SqlTransactionWorkAsync(DBTypes.SqlServer, true, false, strConn, async (conn, transaction) => { SqlTransaction sqlTran = null; if (transaction != null) { sqlTran = (SqlTransaction)transaction; } await using (SqlCommand commond = new SqlCommand() { Connection = (SqlConnection)conn, CommandType = CommandType.Text, Transaction = sqlTran, CommandText = string.Format(@" select @count= count(*) from EnvironmentClaimGenerator where [name] like @name select {0} from EnvironmentClaimGenerator where [name] like @name order by sequence offset (@pagesize * (@page - 1)) rows fetch next @pagesize rows only;" , StoreHelper.GetEnvironmentClaimGeneratorSelectFields(string.Empty)) }) { var parameter = new SqlParameter("@name", SqlDbType.VarChar, 150) { Value = $"{name.ToSqlLike()}%" }; commond.Parameters.Add(parameter); parameter = new SqlParameter("@page", SqlDbType.Int) { Value = page }; commond.Parameters.Add(parameter); parameter = new SqlParameter("@pagesize", SqlDbType.Int) { Value = pageSize }; commond.Parameters.Add(parameter); parameter = new SqlParameter("@count", SqlDbType.Int) { Direction = ParameterDirection.Output }; commond.Parameters.Add(parameter); await commond.PrepareAsync(); SqlDataReader reader = null; await using (reader = await commond.ExecuteReaderAsync()) { while (await reader.ReadAsync()) { var generator = new EnvironmentClaimGenerator(); StoreHelper.SetEnvironmentClaimGeneratorSelectFields(generator, reader, string.Empty); result.Results.Add(generator); } await reader.CloseAsync(); result.TotalCount = (int)commond.Parameters["@count"].Value; result.CurrentPage = page; } } }); return(result); }