/// <summary>
/// 取得仅更新的SQL语句
/// </summary>
internal string GetModifiedSqlCode(DataDictionaryData data)
{
if (data.__EntityStatusNull || !data.__EntityStatus.IsModified)
{
return(";");
}
StringBuilder sql = new StringBuilder();
sql.AppendLine("UPDATE [ST_Dictionary] SET");
//名称
if (data.__EntityStatus.ModifiedProperties[DataDictionaryData.Real_Name] > 0)
{
sql.AppendLine(" [Name] = @Name");
}
//状态
if (data.__EntityStatus.ModifiedProperties[DataDictionaryData.Real_State] > 0)
{
sql.AppendLine(" [State] = @State");
}
//特性
if (data.__EntityStatus.ModifiedProperties[DataDictionaryData.Real_Feature] > 0)
{
sql.AppendLine(" [Feature] = @Feature");
}
//备注
if (data.__EntityStatus.ModifiedProperties[DataDictionaryData.Real_Memo] > 0)
{
sql.AppendLine(" [Memo] = @Memo");
}
//值
if (data.__EntityStatus.ModifiedProperties[DataDictionaryData.Real_Value] > 0)
{
sql.AppendLine(" [Value] = @Value");
}
sql.Append(" WHERE [Id] = @Id;");
return(sql.ToString());
}
/// <summary>
/// 载入数据
/// </summary>
/// <param name="reader">数据读取器</param>
/// <param name="entity">读取数据的实体</param>
protected sealed override void LoadEntity(MySqlDataReader reader, DataDictionaryData entity)
{
using (new EditScope(entity.__EntityStatus, EditArrestMode.All, false))
{
entity._id = (int)reader.GetInt32(0);
if (!reader.IsDBNull(1))
{
entity._name = reader.GetString(1);
}
entity._state = (long)reader.GetInt64(2);
if (!reader.IsDBNull(3))
{
entity._feature = reader.GetString(3);
}
if (!reader.IsDBNull(4))
{
entity._memo = reader.GetString(4);
}
if (!reader.IsDBNull(5))
{
entity._value = reader.GetString(5);
}
}
}
/// <summary>
/// 设置插入数据的命令
/// </summary>
/// <param name="entity">实体对象</param>
/// <param name="cmd">命令</param>
/// <returns>返回真说明要取主键</returns>
protected sealed override bool SetInsertCommand(DataDictionaryData entity, MySqlCommand cmd)
{
cmd.CommandText = InsertSqlCode;
CreateFullSqlParameter(entity, cmd);
return(true);
}
/// <summary>
/// 设置更新数据的命令
/// </summary>
/// <param name="entity">实体对象</param>
/// <param name="cmd">命令</param>
protected sealed override void SetUpdateCommand(DataDictionaryData entity, MySqlCommand cmd)
{
cmd.CommandText = UpdateSqlCode;
CreateFullSqlParameter(entity, cmd);
}
/// <summary>
/// 设置插入数据的命令
/// </summary>
/// <param name="entity">实体对象</param>
/// <param name="cmd">命令</param>
/// <returns>返回真说明要取主键</returns>
private void CreateFullSqlParameter(DataDictionaryData entity, MySqlCommand cmd)
{
//01:标识(Id)
cmd.Parameters.Add(new MySqlParameter("Id", MySqlDbType.Int32)
{
Value = entity.Id
});
//02:名称(Name)
var isNull = string.IsNullOrWhiteSpace(entity.Name);
var parameter = new MySqlParameter("Name", MySqlDbType.VarChar, isNull ? 10 : (entity.Name).Length);
if (isNull)
{
parameter.Value = DBNull.Value;
}
else
{
parameter.Value = entity.Name;
}
cmd.Parameters.Add(parameter);
//03:状态(State)
cmd.Parameters.Add(new MySqlParameter("State", MySqlDbType.Int64)
{
Value = entity.State
});
//04:特性(Feature)
isNull = string.IsNullOrWhiteSpace(entity.Feature);
parameter = new MySqlParameter("Feature", MySqlDbType.VarChar, isNull ? 10 : (entity.Feature).Length);
if (isNull)
{
parameter.Value = DBNull.Value;
}
else
{
parameter.Value = entity.Feature;
}
cmd.Parameters.Add(parameter);
//05:备注(Memo)
isNull = string.IsNullOrWhiteSpace(entity.Memo);
parameter = new MySqlParameter("Memo", MySqlDbType.VarChar, isNull ? 10 : (entity.Memo).Length);
if (isNull)
{
parameter.Value = DBNull.Value;
}
else
{
parameter.Value = entity.Memo;
}
cmd.Parameters.Add(parameter);
//06:值(Value)
isNull = string.IsNullOrWhiteSpace(entity.Value);
parameter = new MySqlParameter("Value", MySqlDbType.VarChar, isNull ? 10 : (entity.Value).Length);
if (isNull)
{
parameter.Value = DBNull.Value;
}
else
{
parameter.Value = entity.Value;
}
cmd.Parameters.Add(parameter);
}
