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);
}
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);
}