public string ToString(IBaseDataSpecial cfg)
{
StringBuilder sql = new StringBuilder();
IUpatedataInfo _row = this.FilterRow;
foreach (string f in _row.GetUpateFields())
{
object v = _row.GetValueByName(f);
if (v == null || v == DBNull.Value)
{
switch (cfg.FieldMask)
{
case EM_Safe_Field_MASK.MySQLMode:
sql.AppendFormat(" and isNull(`{0}`)=1", f); continue;
case EM_Safe_Field_MASK.MsSQLMode:
sql.AppendFormat(" and [{0}] is null", f); continue;
default:
throw new Exception("未知的编码方式:" + cfg.FieldMask.ToString());
}
}
if (v is int)
{
sql.AppendFormat(" and {0}={1}", cfg.FieldEncode(f), v);
}
else
{
sql.AppendFormat(" and {0}='{1}'", cfg.FieldEncode(f), cfg.SqlEncode(v.ToString()));
}
}
if (_andFilter != null && _andFilter.Count != 0)
{
sql.AppendFormat(" and {0}", DataFilter.FiltersToString(_andFilter, "and", cfg));
}
if (_orFilter != null && _orFilter.Count != 0)
{
sql.AppendFormat("\n or {0}", DataFilter.FiltersToString(_orFilter, "or", cfg));
}
if (sql.Length > 4)
{
string h = sql.ToString().Substring(0, 4);
if (h == " and" || h == "\n or")
{
sql.Remove(0, 4);
}
}
return(sql.ToString());
}
protected override bool SaveData(IUpatedataInfo DataRow)
{
string table = DataRow.TableName;
if (string.IsNullOrEmpty(table))
{
return(false);
}
string idStr = DataRow.IdentifyField;
if (string.IsNullOrEmpty(idStr))
{
return(false);
}
List <string> fields = DataRow.GetUpateFields();
if (fields.Count == 0)
{
return(false);
}
using (var cmd = Command())
{
bool isNew;
object t = DataRow.GetValueByName(idStr);
isNew = t == null || t == DBNull.Value || (int)t <= 0;
SqlParameter ptr;
string sql1 = string.Empty, sql2 = string.Empty;
foreach (string f in fields)
{
if (f == idStr)
{
continue;
}
var val = DataRow.GetValueByName(f);
if (val == null)
{
val = DBNull.Value;
}
ptr = new SqlParameter("@" + f, val);
cmd.Parameters.Add(ptr);
if (isNew)
{
sql1 += ",[" + f + "]";
sql2 += ",@" + f;
}
else
{
sql1 += ",[" + f + "]=@" + f;
}
}
if (!string.IsNullOrEmpty(sql1))
{
sql1 = sql1.Substring(1);
}
string sql;
if (isNew)
{
sql = "insert into [" + table + "](" + sql1 + ") values(" + sql2.Substring(1) + ")";
}
else
{
sql = "update [" + table + "] set " + sql1 + " where [" + idStr + "]=@" + idStr;
ptr = new SqlParameter("@" + idStr, DataRow.GetValueByName(idStr));
cmd.Parameters.Add(ptr);
}
cmd.CommandText = sql;
TimerStart();
try
{
cmd.ExecuteNonQuery();
}
catch (System.Data.SqlClient.SqlException ex)
{
Shotgun.Library.ErrLogRecorder.SqlError(ex, sql, cmd.Parameters);
cmd.Dispose();
throw;
}
finally
{
TimerEnd(sql);
}
if (isNew)
{
cmd.CommandText = "select @@identity";
t = cmd.ExecuteScalar();
}
else
{
t = null;
}
cmd.Dispose();
DataRow.SetUpdated(t);
}
return(true);
}
