f5c1bf24c0
Standardizes class names for different database query builders, aligning naming conventions across SQLite, MySQL, PostgreSQL implementations, and updating related factory method calls to improve code clarity and maintainability.
88 lines
2.9 KiB
C#
88 lines
2.9 KiB
C#
/*
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TShock, a server mod for Terraria
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Copyright (C) 2011-2025 Pryaxis & TShock Contributors
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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 MySql.Data.MySqlClient;
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namespace TShockAPI.DB.Queries;
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/// <summary>
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/// Query Creator for MySQL
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/// </summary>
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public class MysqlQueryBuilder : GenericQueryBuilder, IQueryBuilder
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{
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/// <summary>
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/// Creates a table from a SqlTable object.
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/// </summary>
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/// <param name="table">The SqlTable to create the table from</param>
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/// <returns>The sql query for the table creation.</returns>
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public override string CreateTable(SqlTable table)
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{
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ValidateSqlColumnType(table.Columns);
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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),
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c.Primary ? "PRIMARY KEY" : "",
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c.AutoIncrement ? "AUTO_INCREMENT" : "",
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c.NotNull ? "NOT NULL" : "",
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c.DefaultCurrentTimestamp ? "DEFAULT CURRENT_TIMESTAMP" : ""));
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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(EscapeTableName(table.Name), string.Join(", ", columns),
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uniques.Any()
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? ", UNIQUE({0})".SFormat(string.Join(", ", uniques))
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: "");
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}
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/// <inheritdoc />
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public override string RenameTable(string from, string to) => /*lang=mysql*/"RENAME TABLE {0} TO {1}".SFormat(from, to);
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private static readonly Dictionary<MySqlDbType, string> TypesAsStrings = new()
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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.Float, "FLOAT" },
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{ MySqlDbType.Double, "DOUBLE" },
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{ MySqlDbType.Int32, "INT" },
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{ MySqlDbType.Int64, "BIGINT"},
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{ MySqlDbType.DateTime, "DATETIME"},
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};
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/// <inheritdoc />
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public override string DbTypeToString(MySqlDbType type, int? length)
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{
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if (TypesAsStrings.TryGetValue(type, out string ret))
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{
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return ret + (length is not null ? "({0})".SFormat((int)length) : "");
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}
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throw new NotImplementedException(Enum.GetName(typeof(MySqlDbType), type));
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}
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/// <inheritdoc />
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protected override string EscapeTableName(string table) => table.SFormat("`{0}`", table);
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}
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