public static void Delete(MySQLDataStoreBase store, MySqlConnection cnn, ModelBase instance, IDataStoreKey key, object[] extra)
{
var record = GeneratorUtils.AsSuitableRecordInstance(instance, true);
using (var cmd = cnn.CreateCommand())
{
var pk = key ?? record.DataStoreKey;
if (pk == null)
{
throw new MySQLDataAccessException(StringConsts.KEY_UNAVAILABLE_ERROR);
}
var where = GeneratorUtils.KeyToWhere(pk, cmd.Parameters);
if (!string.IsNullOrEmpty(where))
{
cmd.CommandText = string.Format("DELETE T1 FROM `{0}` T1 WHERE {1}", record.TableName, where);
}
else
{
cmd.CommandText = string.Format("DELETE T1 FROM `{0}` T1", record.TableName);
}
var affected = 0;
try
{
affected = cmd.ExecuteNonQuery();
GeneratorUtils.LogCommand(store.LogLevel, "rmdelete-ok", cmd, null);
}
catch (Exception error)
{
GeneratorUtils.LogCommand(store.LogLevel, "rmdelete-error", cmd, error);
throw;
}
if (affected == 0)
{
throw new MySQLDataAccessException(string.Format(StringConsts.NO_ROWS_AFFECTED_ERROR, "Delete"));
}
}//using command
}
/// <summary>
/// Auto generates select sql and params. If sqlStatement!=null then params are added to that statement
/// </summary>
public static void Load(MySQLDataStoreBase store, MySqlConnection cnn, string sqlStatement, ModelBase instance, IDataStoreKey key, object[] extra)
{
var autoSql = string.IsNullOrEmpty(sqlStatement);
var record = GeneratorUtils.AsSuitableRecordInstance(instance, autoSql);
var select = new StringBuilder();
if (autoSql)
{
foreach (var fld in record.Fields)
{
if (fld.StoreFlag == StoreFlag.LoadAndStore || fld.StoreFlag == StoreFlag.OnlyLoad)
{
select.AppendFormat(" T1.`{0}`,", fld.FieldName);
}
}
if (select.Length > 0)
{
select.Remove(select.Length - 1, 1);// remove ","
}
else
{
throw new MySQLDataAccessException(StringConsts.LOAD_NO_SELECT_COLUMNS_ERROR);
}
}
var pk = key ?? record.DataStoreKey;
if (pk == null)
{
throw new MySQLDataAccessException(StringConsts.KEY_UNAVAILABLE_ERROR);
}
using (var cmd = cnn.CreateCommand())
{
var where = GeneratorUtils.KeyToWhere(pk, cmd.Parameters);
if (autoSql)
{
cmd.CommandText = string.Format("SELECT {0} FROM `{1}` T1 WHERE {2}", select, record.TableName, where);
}
else
{
cmd.CommandText = string.Format(sqlStatement, where);
}
MySqlDataReader reader = null;
try
{
reader = cmd.ExecuteReader();
GeneratorUtils.LogCommand(store.LogLevel, "rmload-ok", cmd, null);
}
catch (Exception error)
{
GeneratorUtils.LogCommand(store.LogLevel, "rmload-error", cmd, error);
throw;
}
using (reader)
{
if (reader.Read())
{
reader.CopyFieldsToRecordFields(record);
}
else
{
throw new MySQLDataAccessException(string.Format(StringConsts.LOADING_ENTITY_NOT_FOUND_ERROR, pk));
}
} //using reader
} //using command
}
public static void Save(MySQLDataStoreBase store, MySqlConnection cnn, ModelBase instance, IDataStoreKey key, object[] extra)
{
var record = GeneratorUtils.AsSuitableRecordInstance(instance, true);
if (record.LastPostedChange != ChangeType.Created && record.LastPostedChange != ChangeType.Edited)
{
throw new MySQLDataAccessException(string.Format(StringConsts.MODEL_INVALID_STATE_ERROR, "Created || Edited", instance.LastPostedChange));
}
bool insert = instance.LastPostedChange == ChangeType.Created;
var cnames = new StringBuilder();
var values = new StringBuilder();
var vparams = new List <MySqlParameter>();
var vpidx = 0;
foreach (var fld in record.Fields)
{
if (fld.StoreFlag == StoreFlag.LoadAndStore || fld.StoreFlag == StoreFlag.OnlyStore)
{
if (
insert || fld.Modified
)
{
cnames.AppendFormat(" `{0}`,", fld.FieldName);
if (fld.HasValue)
{
var pname = string.Format("?VAL{0}", vpidx);
if (insert)
{
values.AppendFormat(" {0},", pname);
}
else
{
values.AppendFormat(" `{0}` = {1},", fld.FieldName, pname);
}
var par = new MySqlParameter();
par.ParameterName = pname;
par.Value = fld.ValueAsObject;
vparams.Add(par);
vpidx++;
}
else
{
if (insert)
{
values.Append(" NULL,");
}
else
{
values.AppendFormat(" `{0}` = NULL,", fld.FieldName);
}
}
}
}
}
if (cnames.Length > 0)
{
cnames.Remove(cnames.Length - 1, 1);// remove ","
if (values.Length > 0)
{
values.Remove(values.Length - 1, 1); // remove ","
}
}
else
{
return;//nothing has been modified
}
using (var cmd = cnn.CreateCommand())
{
var sql = string.Empty;
if (insert) //INSERT
{
sql =
string.Format("INSERT INTO `{0}` ({1}) VALUES ({2})", record.TableName, cnames, values);
}
else //UPDATE
{
var pk = key ?? record.DataStoreKey;
if (pk == null)
{
throw new MySQLDataAccessException(StringConsts.KEY_UNAVAILABLE_ERROR);
}
var where = GeneratorUtils.KeyToWhere(pk, cmd.Parameters);
if (!string.IsNullOrEmpty(where))
{
sql = string.Format("UPDATE `{0}` T1 SET {1} WHERE {2}", record.TableName, values, where);
}
else
{
sql = string.Format("UPDATE `{0}` T1 SET {1}", record.TableName, values);
}
}
cmd.CommandText = sql;
cmd.Parameters.AddRange(vparams.ToArray());
var affected = 0;
try
{
affected = cmd.ExecuteNonQuery();
GeneratorUtils.LogCommand(store.LogLevel, "rmsave-ok", cmd, null);
}
catch (Exception error)
{
GeneratorUtils.LogCommand(store.LogLevel, "rmsave-error", cmd, error);
throw;
}
if (affected == 0)
{
throw new MySQLDataAccessException(string.Format(StringConsts.NO_ROWS_AFFECTED_ERROR, instance.LastPostedChange == ChangeType.Created ? "Insert" : "Update"));
}
}//using command
}
