8a75b1fdc5
Removes obsolete query builder interface and implementations. Introduces a new namespace for query-related classes to enhance organization. Updates various database managers to use the new query utilities, promoting code reuse and maintainability. Enhances query functionality, ensuring better consistency across the codebase.
103 lines
3.4 KiB
C#
103 lines
3.4 KiB
C#
/*
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TShock, a server mod for Terraria
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Copyright (C) 2011-2019 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 Sqlite
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/// </summary>
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public class SqliteQueryCreator : GenericQueryCreator, 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,
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DbTypeToString(c.Type, c.Length),
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c.Primary ? "PRIMARY KEY" : "",
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c.AutoIncrement ? "AUTOINCREMENT" : "",
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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),
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string.Join(", ", columns),
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uniques.Count() > 0 ? ", UNIQUE({0})".SFormat(string.Join(", ", uniques)) : "");
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}
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/// <summary>
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/// Renames the given table.
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/// </summary>
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/// <param name="from">Old name of the table</param>
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/// <param name="to">New name of the table</param>
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/// <returns>The sql query for renaming the table.</returns>
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public override string RenameTable(string from, string to)
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{
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return "ALTER TABLE {0} RENAME TO {1}".SFormat(from, to);
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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.Float, "REAL" },
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{ MySqlDbType.Double, "REAL" },
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{ MySqlDbType.Int32, "INTEGER" },
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{ MySqlDbType.Blob, "BLOB" },
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{ MySqlDbType.Int64, "BIGINT"},
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{ MySqlDbType.DateTime, "DATETIME"},
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};
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/// <summary>
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/// Converts the MySqlDbType enum to it's string representation.
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/// </summary>
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/// <param name="type">The MySqlDbType type</param>
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/// <param name="length">The length of the datatype</param>
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/// <returns>The string representation</returns>
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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;
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}
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throw new NotImplementedException(Enum.GetName(typeof(MySqlDbType), type));
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}
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/// <summary>
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/// Escapes the table name
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/// </summary>
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/// <param name="table">The name of the table to be escaped</param>
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/// <returns></returns>
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protected override string EscapeTableName(string table) => $"\'{table}\'";
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}
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