/// <summary>
/// Sum Query Builder
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="conditionalOptions"></param>
/// <param name="column"></param>
/// <param name="fields"></param>
/// <param name="values"></param>
/// <returns></returns>
internal static int BuildSum <T>(ConditionalOptions conditionalOptions, string column, string[] fields, object[] values)
{
string query;
query = $"SELECT SUM(`{column}`) AS `Sum` FROM ";
Type type = typeof(T);
// Table Name
if (!(type.GetCustomAttributes(typeof(SqlTableAttribute), true).FirstOrDefault() is SqlTableAttribute table))
{
Logger.Verbose($"SqlTableAttribute was not found on object type: {type}");
return(0);
}
SqlObject sqlObject = new SqlObject
{
Table = table.TableName
};
query += $"`{Configuration.MySqlDatabase}`.`{sqlObject.Table}`";
int iter = 1;
switch (conditionalOptions)
{
case ConditionalOptions.NONE:
break;
case ConditionalOptions.BY_ID:
query += $" WHERE {Converter.GetPrimaryPropertyColumnName(type)} = @param1;";
break;
case ConditionalOptions.WHERE:
query += $" WHERE ";
iter = 1;
foreach (string fie in fields)
{
if (iter != 1)
{
query += " AND ";
}
query += $"`{fie}` = @param{iter}";
iter++;
}
break;
case ConditionalOptions.WHERENULL:
query += $" WHERE ";
iter = 1;
foreach (string fie in fields)
{
if (iter != 1)
{
query += " AND ";
}
query += $"`{fie}` IS NULL";
iter++;
}
break;
default:
break;
}
query += ";";
sqlObject.CommandText = query;
return(SqlFunc.Sum(sqlObject, values));
}
/// <summary>
/// Update Record by ID
/// </summary>
/// <param name="sqlObject"></param>
internal static void Row_Update_ID(SqlObject sqlObject, string singleField)
{
using (MySqlConnection sqlConnection = new MySqlConnection(ConnectionString))
{
sqlConnection.Open();
using (MySqlCommand Command = sqlConnection.CreateCommand())
{
Command.CommandText = sqlObject.CommandText;
if (string.IsNullOrEmpty(singleField))
{
int paramCount = 1;
foreach (SqlColumn col in sqlObject.Items)
{
MySqlParameter param = new MySqlParameter
{
ParameterName = $"@param{paramCount}",
MySqlDbType = col.Type,
Value = col.Value
};
Command.Parameters.Add(param);
paramCount++;
}
}
else
{
foreach (SqlColumn col in sqlObject.Items)
{
if (col.PropertyName.Contains(singleField))
{
MySqlParameter param = new MySqlParameter
{
ParameterName = $"@param1",
MySqlDbType = col.Type,
Value = col.Value
};
Command.Parameters.Add(param);
break;
}
}
}
Logger.Verbose(Command.CommandText);
try
{
if (Command.ExecuteNonQuery() > 0)
{
return;
}
}
catch (MySqlException ex)
{
Logger.Verbose($"MySQL Error Code: {ex.Number}");
Logger.Error(ex);
if (ex.Number == 1054)
{
// Unknown column 'field' in 'field list'
string columnName = "";
foreach (SqlColumn col in sqlObject.Items)
{
if (ex.Message.Contains($"'{col.ColumnName}'"))
{
columnName = col.ColumnName; break;
}
}
Logger.Verbose($"Looks like we don't have a column for `{sqlObject.Table}.{columnName}`, let's create that.");
bool tableCreated = Table_Alter_Add_Column(sqlObject.Table, columnName, sqlObject);
Logger.Verbose($"MySql Table `{Configuration.MySqlDatabase}`.`{sqlObject.Table}` Altered: Column {columnName} Added");
Row_Update_ID(sqlObject, singleField);
}
return;
}
return;
}
}
}
/// <summary>
/// Select Query Builder
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="selectOptions"></param>
/// <param name="convertTo"></param>
/// <param name="args"></param>
/// <returns></returns>
internal static List <T> BuildSelect <T>(SelectOptions selectOptions, ConditionalOptions conditionalOptions, string[] columns, string[] fields, object[] values, Type convertTo = null, WhereOption whereOption = WhereOption.EQUAL, SelectLimiter limit = null)
{
string query;
if (selectOptions == SelectOptions.FIELDS)
{
query = $"SELECT `{string.Join("`, `", columns)}` FROM ";
}
else
{
query = $"SELECT * FROM ";
}
Type type = convertTo ?? typeof(T);
// Table Name
if (!(type.GetCustomAttributes(typeof(SqlTableAttribute), true).FirstOrDefault() is SqlTableAttribute table))
{
Logger.Verbose($"SqlTableAttribute was not found on object type: {type}");
return(new List <T>());
}
SqlObject sqlObject = new SqlObject
{
Table = table.TableName
};
query += $"`{Configuration.MySqlDatabase}`.`{sqlObject.Table}`";
switch (conditionalOptions)
{
case ConditionalOptions.NONE:
break;
case ConditionalOptions.BY_ID:
query += $" WHERE {Converter.GetPrimaryPropertyColumnName(type)} = @param1";
break;
case ConditionalOptions.WHERE:
query += $" WHERE ";
int iter = 1;
foreach (string fie in fields)
{
if (iter != 1)
{
query += " AND ";
}
switch (whereOption)
{
case WhereOption.EQUAL:
query += $"`{fie}` = @param{iter}";
break;
case WhereOption.NOTEQUAL:
query += $"`{fie}` != @param{iter}";
break;
case WhereOption.GREATERTHAN:
query += $"`{fie}` > @param{iter}";
break;
case WhereOption.LESSTHAN:
query += $"`{fie}` < @param{iter}";
break;
default:
throw new ArgumentNullException("Invalid or Missing WhereOption");
}
iter++;
}
break;
case ConditionalOptions.WHERENULL:
query += $" WHERE `{fields[0]}` IS NULL";
break;
default:
break;
}
if (limit != null)
{
query += limit.QueryData;
}
else
{
query += ";";
}
sqlObject.CommandText = query;
List <T> objects;
switch (selectOptions)
{
case SelectOptions.ALL:
switch (conditionalOptions)
{
case ConditionalOptions.NONE:
objects = SqlFunc.Select <T>(sqlObject, null);
break;
case ConditionalOptions.BY_ID:
objects = SqlFunc.Select <T>(sqlObject, null, values);
break;
case ConditionalOptions.WHERE:
objects = SqlFunc.Select <T>(sqlObject, null, values);
break;
case ConditionalOptions.WHERENULL:
objects = SqlFunc.Select <T>(sqlObject, null, values);
break;
default:
Logger.Verbose("Conditional Select Error");
objects = new List <T>();
break;
}
break;
case SelectOptions.FIELDS:
switch (conditionalOptions)
{
case ConditionalOptions.NONE:
objects = SqlFunc.Select <T>(sqlObject, columns);
break;
case ConditionalOptions.BY_ID:
objects = SqlFunc.Select <T>(sqlObject, columns, values);
break;
case ConditionalOptions.WHERE:
objects = SqlFunc.Select <T>(sqlObject, columns, values);
break;
case ConditionalOptions.WHERENULL:
objects = SqlFunc.Select <T>(sqlObject, columns, values);
break;
default:
Logger.Verbose("Conditional Select Error");
objects = new List <T>();
break;
}
break;
default:
Logger.Verbose("Select Type Error");
objects = new List <T>();
break;
}
foreach (T obj in objects)
{
foreach (PropertyInfo property in type.GetProperties(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance))
{
object[] attributes = property.GetCustomAttributes(false);
object column = attributes
.FirstOrDefault(x => x.GetType() == typeof(SqlColumnAttribute));
if (column != null)
{
SqlColumnAttribute col = column as SqlColumnAttribute;
// Should we be getting this derived property? If not, skip
if (selectOptions == SelectOptions.FIELDS && !columns.Contains(col.ColumnName))
{
continue;
}
if (col.IsTable)
{
List <object> data = BuildSelect <object>(SelectOptions.ALL, ConditionalOptions.WHERE, null, new string[] { col.AttachedTable }, new string[] { SqlFunc.ReflectPrimary(obj).ToString() }, property.PropertyType);
if (data.Count > 0)
{
property.SetValue(obj, data[0]);
}
else
{
Logger.Verbose($"Dataset for {property.PropertyType} had no value...");
}
}
else if (property.PropertyType != typeof(byte[]) && typeof(IList).IsAssignableFrom(property.PropertyType))
{
Type listOf = property.PropertyType.GetGenericArguments()[0];
property.SetValue(obj, Activator.CreateInstance(property.PropertyType));
foreach (object item in BuildSelect <object>(SelectOptions.ALL, ConditionalOptions.WHERE, null, new string[] { col.AttachedTable }, new string[] { SqlFunc.ReflectPrimary(obj).ToString() }, listOf))
{
(property.GetValue(obj) as IList).Add(item);
}
}
}
}
}
return(objects);
}
