220 lines
7.6 KiB
C#
220 lines
7.6 KiB
C#
/*
|
|
TShock, a server mod for Terraria
|
|
Copyright (C) 2011-2014 Nyx Studios (fka. The TShock Team)
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.Linq;
|
|
using System.Text;
|
|
using MySql.Data.MySqlClient;
|
|
using TShockAPI.Extensions;
|
|
|
|
namespace TShockAPI.DB
|
|
{
|
|
public interface IQueryBuilder
|
|
{
|
|
string CreateTable(SqlTable table);
|
|
string AlterTable(SqlTable from, SqlTable to);
|
|
string DbTypeToString(MySqlDbType type, int? length);
|
|
string UpdateValue(string table, List<SqlValue> values, List<SqlValue> wheres);
|
|
string InsertValues(string table, List<SqlValue> values);
|
|
string ReadColumn(string table, List<SqlValue> wheres);
|
|
string DeleteRow(string table, List<SqlValue> wheres);
|
|
string RenameTable(string from, string to);
|
|
}
|
|
|
|
public class SqliteQueryCreator : GenericQueryCreator, IQueryBuilder
|
|
{
|
|
public override string CreateTable(SqlTable table)
|
|
{
|
|
var columns =
|
|
table.Columns.Select(
|
|
c =>
|
|
"'{0}' {1} {2} {3} {4} {5}".SFormat(c.Name, DbTypeToString(c.Type, c.Length), c.Primary ? "PRIMARY KEY" : "",
|
|
c.AutoIncrement ? "AUTOINCREMENT" : "", c.NotNull ? "NOT NULL" : "",
|
|
c.Unique ? "UNIQUE" : ""));
|
|
return "CREATE TABLE {0} ({1})".SFormat(EscapeTableName(table.Name), string.Join(", ", columns));
|
|
}
|
|
|
|
public override string RenameTable(string from, string to)
|
|
{
|
|
return "ALTER TABLE {0} RENAME TO {1}".SFormat(from, to);
|
|
}
|
|
|
|
private static readonly Dictionary<MySqlDbType, string> TypesAsStrings = new Dictionary<MySqlDbType, string>
|
|
{
|
|
{ MySqlDbType.VarChar, "TEXT" },
|
|
{ MySqlDbType.String, "TEXT" },
|
|
{ MySqlDbType.Text, "TEXT" },
|
|
{ MySqlDbType.TinyText, "TEXT" },
|
|
{ MySqlDbType.MediumText, "TEXT" },
|
|
{ MySqlDbType.LongText, "TEXT" },
|
|
{ MySqlDbType.Float, "REAL" },
|
|
{ MySqlDbType.Double, "REAL" },
|
|
{ MySqlDbType.Int32, "INTEGER" },
|
|
{ MySqlDbType.Blob, "BLOB" },
|
|
{ MySqlDbType.Int64, "BIGINT"},
|
|
};
|
|
|
|
public string DbTypeToString(MySqlDbType type, int? length)
|
|
{
|
|
string ret;
|
|
if (TypesAsStrings.TryGetValue(type, out ret))
|
|
return ret;
|
|
throw new NotImplementedException(Enum.GetName(typeof(MySqlDbType), type));
|
|
}
|
|
|
|
protected override string EscapeTableName(string table)
|
|
{
|
|
return table.SFormat("'{0}'", table);
|
|
}
|
|
}
|
|
|
|
public class MysqlQueryCreator : GenericQueryCreator, IQueryBuilder
|
|
{
|
|
public override string CreateTable(SqlTable table)
|
|
{
|
|
var columns =
|
|
table.Columns.Select(
|
|
c =>
|
|
"{0} {1} {2} {3} {4}".SFormat(c.Name, DbTypeToString(c.Type, c.Length), c.Primary ? "PRIMARY KEY" : "",
|
|
c.AutoIncrement ? "AUTO_INCREMENT" : "", c.NotNull ? "NOT NULL" : ""));
|
|
var uniques = table.Columns.Where(c => c.Unique).Select(c => c.Name);
|
|
return "CREATE TABLE {0} ({1} {2})".SFormat(EscapeTableName(table.Name), string.Join(", ", columns),
|
|
uniques.Count() > 0
|
|
? ", UNIQUE({0})".SFormat(string.Join(", ", uniques))
|
|
: "");
|
|
}
|
|
|
|
public override string RenameTable(string from, string to)
|
|
{
|
|
return "RENAME TABLE {0} TO {1}".SFormat(from, to);
|
|
}
|
|
|
|
private static readonly Dictionary<MySqlDbType, string> TypesAsStrings = new Dictionary<MySqlDbType, string>
|
|
{
|
|
{ MySqlDbType.VarChar, "VARCHAR" },
|
|
{ MySqlDbType.String, "CHAR" },
|
|
{ MySqlDbType.Text, "TEXT" },
|
|
{ MySqlDbType.TinyText, "TINYTEXT" },
|
|
{ MySqlDbType.MediumText, "MEDIUMTEXT" },
|
|
{ MySqlDbType.LongText, "LONGTEXT" },
|
|
{ MySqlDbType.Float, "FLOAT" },
|
|
{ MySqlDbType.Double, "DOUBLE" },
|
|
{ MySqlDbType.Int32, "INT" },
|
|
{ MySqlDbType.Int64, "BIGINT"},
|
|
};
|
|
|
|
public string DbTypeToString(MySqlDbType type, int? length)
|
|
{
|
|
string ret;
|
|
if (TypesAsStrings.TryGetValue(type, out ret))
|
|
return ret + (length != null ? "({0})".SFormat((int)length) : "");
|
|
throw new NotImplementedException(Enum.GetName(typeof(MySqlDbType), type));
|
|
}
|
|
|
|
protected override string EscapeTableName(string table)
|
|
{
|
|
return table.SFormat("`{0}`", table);
|
|
}
|
|
}
|
|
|
|
public abstract class GenericQueryCreator
|
|
{
|
|
protected static Random rand = new Random();
|
|
protected abstract string EscapeTableName(string table);
|
|
public abstract string CreateTable(SqlTable table);
|
|
public abstract string RenameTable(string from, string to);
|
|
|
|
/// <summary>
|
|
/// Alter a table from source to destination
|
|
/// </summary>
|
|
/// <param name="from">Must have name and column names. Column types are not required</param>
|
|
/// <param name="to">Must have column names and column types.</param>
|
|
/// <returns></returns>
|
|
public string AlterTable(SqlTable from, SqlTable to)
|
|
{
|
|
/*
|
|
* Any example outpuf from this looks like:-
|
|
ALTER TABLE "main"."Bans" RENAME TO "oXHFcGcd04oXHFcGcd04_Bans"
|
|
CREATE TABLE "main"."Bans" ("IP" TEXT PRIMARY KEY ,"Name" TEXT)
|
|
INSERT INTO "main"."Bans" SELECT "IP","Name" FROM "main"."oXHFcGcd04oXHFcGcd04_Bans"
|
|
DROP TABLE "main"."oXHFcGcd04oXHFcGcd04_Bans"
|
|
*
|
|
* Twitchy - Oh. I get it!
|
|
*/
|
|
var rstr = rand.NextString(20);
|
|
var escapedTable = EscapeTableName(from.Name);
|
|
var tmpTable = EscapeTableName("{0}_{1}".SFormat(rstr, from.Name));
|
|
var alter = RenameTable(escapedTable, tmpTable);
|
|
var create = CreateTable(to);
|
|
// combine all columns in the 'from' variable excluding ones that aren't in the 'to' variable.
|
|
// exclude the ones that aren't in 'to' variable because if the column is deleted, why try to import the data?
|
|
var columns = string.Join(", ", from.Columns.Where(c => to.Columns.Any(c2 => c2.Name == c.Name)).Select(c => c.Name));
|
|
var insert = "INSERT INTO {0} ({1}) SELECT {1} FROM {2}".SFormat(escapedTable, columns, tmpTable);
|
|
var drop = "DROP TABLE {0}".SFormat(tmpTable);
|
|
return "{0}; {1}; {2}; {3};".SFormat(alter, create, insert, drop);
|
|
}
|
|
|
|
public string DeleteRow(string table, List<SqlValue> wheres)
|
|
{
|
|
return "DELETE FROM {0} {1}".SFormat(EscapeTableName(table), BuildWhere(wheres));
|
|
}
|
|
|
|
public string UpdateValue(string table, List<SqlValue> values, List<SqlValue> wheres)
|
|
{
|
|
if (0 == values.Count)
|
|
throw new ArgumentException("No values supplied");
|
|
|
|
return "UPDATE {0} SET {1} {2}".SFormat(EscapeTableName(table), string.Join(", ", values.Select(v => v.Name + " = " + v.Value)), BuildWhere(wheres));
|
|
}
|
|
|
|
public string ReadColumn(string table, List<SqlValue> wheres)
|
|
{
|
|
return "SELECT * FROM {0} {1}".SFormat(EscapeTableName(table), BuildWhere(wheres));
|
|
}
|
|
|
|
public string InsertValues(string table, List<SqlValue> values)
|
|
{
|
|
var sbnames = new StringBuilder();
|
|
var sbvalues = new StringBuilder();
|
|
int count = 0;
|
|
foreach (SqlValue value in values)
|
|
{
|
|
sbnames.Append(value.Name);
|
|
sbvalues.Append(value.Value.ToString());
|
|
|
|
if (count != values.Count - 1)
|
|
{
|
|
sbnames.Append(", ");
|
|
sbvalues.Append(", ");
|
|
}
|
|
count++;
|
|
}
|
|
|
|
return "INSERT INTO {0} ({1}) VALUES ({2})".SFormat(EscapeTableName(table), sbnames, sbvalues);
|
|
}
|
|
|
|
protected static string BuildWhere(List<SqlValue> wheres)
|
|
{
|
|
if (0 == wheres.Count)
|
|
return string.Empty;
|
|
|
|
return "WHERE {0}".SFormat(string.Join(", ", wheres.Select(v => v.Name + " = " + v.Value)));
|
|
}
|
|
}
|
|
}
|