private TableDef GetTD_MySQL(string table)
{
string query = "SELECT COLUMN_NAME As field,ORDINAL_POSITION as ordinal, IS_NULLABLE, DATA_TYPE as DataType, CHARACTER_MAXIMUM_LENGTH as data_length,COLUMN_KEY as is_index,COLUMN_COMMENT as description,EXTRA\r\n\t\t\t\t\t\t\tFROM INFORMATION_SCHEMA.COLUMNS\r\n\t\t\t\t\t\t\twhere table_name = @name and table_schema = @schema group by COLUMN_NAME";
DbCommand cmd = (DbCommand)null;
DbDataReader reader = (DbDataReader)null;
TableDef tableDef = new TableDef();
tableDef.Name = table;
List <FieldDef> fieldDefList = new List <FieldDef>();
try
{
cmd = DBConnectionFactory.GetMySqlCommand(query, this._dbconn);
DBTools.AddDbParameter(ref cmd, "@name", (object)table);
DBTools.AddDbParameter(ref cmd, "@schema", (object)this._dbconn.Database);
reader = cmd.ExecuteReader();
while (reader.Read())
{
FieldDef fieldDef = new FieldDef();
fieldDef.Name = DBTools.GetDBStringValue(reader, "field");
fieldDef.FieldLength = DBTools.GetDBIntValue(reader, "data_length");
string dbStringValue = DBTools.GetDBStringValue(reader, "description");
fieldDef.Description = string.IsNullOrEmpty(dbStringValue) ? DBHandler.NormalizeFieldName("_" + fieldDef.Name) : dbStringValue;
try
{
fieldDef.DataType = DBTools.GetCSTypeFromDBType(DBTools.GetDBStringValue(reader, "DataType"), (double)fieldDef.FieldLength);
}
catch (Exception ex)
{
string message = ex.Message;
}
fieldDef.CanBeNull = DBTools.GetDBStringValue(reader, "is_nullable") == "YES";
fieldDef.IsPrimaryKey = DBTools.GetDBStringValue(reader, "is_index", (string)null) == "PRI";
fieldDefList.Add(fieldDef);
}
}
catch (DbException ex)
{
throw ex;
}
finally
{
reader?.Close();
cmd?.Dispose();
}
tableDef.Fields = fieldDefList.ToArray();
return(tableDef);
}
private DbCommand GetDBCommand(string queryString)
{
if (this._driver == "MySQL")
{
return(DBConnectionFactory.GetMySqlCommand(queryString, this._dbconn));
}
if (this._driver == "PgSQL")
{
return(DBConnectionFactory.GetPgSqlCommand(queryString, this._dbconn));
}
if (this._driver == "MSSQL")
{
return(DBConnectionFactory.GetSqlCommand(queryString, this._dbconn));
}
return((DbCommand)null);
}
