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