326 lines
11 KiB
C#
326 lines
11 KiB
C#
/********************************************************************
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文件: SqliteManager.cs
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作者: 梦语
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邮箱: 1982614048@qq.com
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创建时间: 2024/03/29 17:28:19
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最后修改: 梦语
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最后修改时间: 2024/04/03 16:04:51
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功能: sqlite本地数据库管理类(用于存放一些本地数据)
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使用案例：
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SqliteManager.Inst.CreateTable("role", new List<DataBaseColumnTypeData>()
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{
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new DataBaseColumnTypeData(){ columnName = "角色id", columnType = DataBaseColumnType.Int, isAutoInchement = true, isPrimaryKey = true},
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new DataBaseColumnTypeData(){ columnName = "角色名称", columnType = DataBaseColumnType.VarChar, parameter = new List<int>() { 10 }, isNotNull = true},
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new DataBaseColumnTypeData(){ columnName = "等级", columnType = DataBaseColumnType.Int, isNotNull = true},
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});
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DataBaseManager.Inst.DelectTable("role");
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DataBaseManager.Inst.Update("role", new List<(string, string)>()
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{
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("角色名称", "11"),
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}, new List<DataBaseFitter>() {
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//new DataBaseFitter()
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//{
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// columnName = "角色名称",
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// fitterType = DataBaseFitterType.Equal,
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// fitterValue = "32",
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//},
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new DataBaseFitter()
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{
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columnName = "等级",
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fitterType = DataBaseFitterType.GreaterlEqual,
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fitterValue = "20",
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},
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});
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SqliteManager.Inst.Select("role", new List<DataBaseFitter>()
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{
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new DataBaseFitter()
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{
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columnName = "角色名称",
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fitterType = DataBaseFitterType.Equal,
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fitterValue = "11"
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}
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});
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*********************************************************************/
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using Mono.Data.Sqlite;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using UnityEngine;
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namespace Ether
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{
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public class SqliteManager : Singleton<SqliteManager>
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{
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private readonly static string dataBaseDirectory = $"{Application.persistentDataPath}/DB"; //数据库文件夹沙盒路径
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private const string dataBaseName = "ether.db"; //数据库名称
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private readonly static string databasePath = $"{dataBaseDirectory}/{dataBaseName}"; // 数据库文件沙盒路径
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private readonly static string streamingAssetsDatabasePath = $"{Application.streamingAssetsPath}/DB/{dataBaseName}"; // streamingAssets数据库文件名称
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static SqliteConnection connection;//创建一个数据库链接事件对象
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private SqliteCommand command;
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private SqliteDataReader reader;
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/// <summary>
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/// 数据库链接
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/// </summary>
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public void Connect()
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{
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// 定义数据库连接字符串
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string connectionString = $"URI = file:{databasePath};Version=3;"; //Android："URI = file:" + Application.dataPath + "test.db";
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// 创建数据库连接
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//传入创建或者访问SQLITE数据库的路径
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connection = new SqliteConnection(connectionString);
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//判断沙盒是否有数据库文件，如果没有则将streamingAssets中的数据库文件拷贝过去
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if (File.Exists(databasePath))
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{
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connection?.Open();//打开数据库
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command = connection.CreateCommand();
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Debug.Log("Sqlite数据库链接完毕已打开");
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}
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else
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{
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if (File.Exists(streamingAssetsDatabasePath))
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{
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if (!Directory.Exists(dataBaseDirectory))
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{
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Directory.CreateDirectory(dataBaseDirectory);
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}
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try
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{
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File.Copy(streamingAssetsDatabasePath, databasePath);
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Debug.Log("Sqlite数据库文件复制成功！");
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connection?.Open();//打开数据库
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command = connection.CreateCommand();
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Debug.Log("Sqlite数据库链接完毕已打开");
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}
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catch (Exception ex)
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{
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Debug.Log("Sqlite数据库文件复制失败：" + ex.Message);
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}
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}
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else
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{
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Debug.LogError("streamingAssets中Sqlite数据库文件不存在！");
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}
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}
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}
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/// <summary>
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/// 断开数据库链接
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/// </summary>
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public void DisConnect()
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{
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command?.Dispose();
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command = null;
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connection?.Close();
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Debug.Log("Sqlite数据库链接已关闭");
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}
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/// <summary>
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/// 创建表
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/// </summary>
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/// <param name="tableName"></param>
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/// <param name="tableColumnDataList"></param>
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public void CreateTable(string tableName, List<DataBaseColumnTypeData> tableColumnDataList)
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{
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string columnSqlStr = "";
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for (int i = 0; i < tableColumnDataList.Count; i++)
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{
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if (i == 0)
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{
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columnSqlStr += DataBaseColumnTypeData.FormatColumnType(tableColumnDataList[i]);
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}
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else
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{
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columnSqlStr += "," + DataBaseColumnTypeData.FormatColumnType(tableColumnDataList[i]);
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}
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}
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string commandStr = $"CREATE TABLE IF NOT EXISTS {tableName}({columnSqlStr}); ";
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Debug.Log("Sqlite创建表Sql:" + commandStr);
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command.CommandText = commandStr;
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command.ExecuteNonQuery();
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}
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/// <summary>
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/// 删除表
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/// </summary>
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/// <param name="tableName"></param>
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public void DropTable(string tableName)
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{
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string commandStr = $"DROP TABLE IF EXISTS {tableName}; ";
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Debug.Log("Sqlite删除表Sql:" + commandStr);
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command.CommandText = commandStr;
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command.ExecuteNonQuery();
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}
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#region 增
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/// <summary>
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/// 增加数据
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/// </summary>
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/// <param name="tableName">表名</param>
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/// <param name="insertDataList">插入数据</param>
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public void Insert(string tableName, List<(string, string)> insertDataList)
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{
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if (insertDataList.Count <= 0)
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{
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Debug.LogError("Sqlite插入表数据为空，请检查数据！");
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return;
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}
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string columnNameList = "";
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string columnValeList = "";
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for (int i = 0; i < insertDataList.Count; i++)
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{
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if (i == 0)
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{
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columnNameList += insertDataList[i].Item1;
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columnValeList += insertDataList[i].Item2;
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}
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else
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{
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columnNameList += "," + insertDataList[i].Item1;
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columnValeList += "," + insertDataList[i].Item2;
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}
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}
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string commandStr = $"INSERT INTO {tableName} ({columnNameList}) VALUES ({columnValeList});";
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Debug.Log("Sqlite插入表Sql:" + commandStr);
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command.CommandText = commandStr;
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command.ExecuteNonQuery();
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}
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#endregion
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#region 删
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/// <summary>
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/// 删除数据
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/// </summary>
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/// <param name="tableName">表名</param>
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/// <param name="fitterList">条件</param>
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public void Delete(string tableName, List<DataBaseFitter> fitterList)
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{
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if (fitterList.Count <= 0)
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{
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Debug.LogError("Sqlite删除表数据为空，请检查数据！");
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return;
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}
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string condition = "";
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for (int i = 0; i < fitterList.Count; i++)
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{
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if (i == 0)
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{
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condition += $"{fitterList[i].columnName} {DataBaseFitter.FormatFitter(fitterList[i].fitterType)} {fitterList[i].fitterValue}";
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}
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else
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{
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condition += $" AND {fitterList[i].columnName} {DataBaseFitter.FormatFitter(fitterList[i].fitterType)} {fitterList[i].fitterValue}";
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}
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}
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string commandStr = $"DELETE FROM {tableName} WHERE {condition};";
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Debug.Log("Sqlite删除表记录Sql:" + commandStr);
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command.CommandText = commandStr;
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command.ExecuteNonQuery();
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}
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#endregion
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#region 改
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public void Update(string tableName, List<(string, string)> setValues, List<DataBaseFitter> fitterList)
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{
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if (setValues.Count <= 0)
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{
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Debug.LogError("Sqlite修改表数据为空，请检查数据！");
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return;
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}
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string setStr = "";
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for (int i = 0; i < setValues.Count; i++)
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{
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if (i == 0)
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{
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setStr += $"{setValues[i].Item1} = '{setValues[i].Item2}'";
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}
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else
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{
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setStr += $",{setValues[i].Item1} = '{setValues[i].Item2}'";
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}
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}
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string condition = "";
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for (int i = 0; i < fitterList.Count; i++)
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{
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if (i == 0)
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{
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condition += $"{fitterList[i].columnName} {DataBaseFitter.FormatFitter(fitterList[i].fitterType)} {fitterList[i].fitterValue}";
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}
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else
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{
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condition += $" AND {fitterList[i].columnName} {DataBaseFitter.FormatFitter(fitterList[i].fitterType)} {fitterList[i].fitterValue}";
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}
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}
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string commandStr = $"UPDATE {tableName} SET {setStr} WHERE {condition};";
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Debug.Log("Sqlite修改表记录Sql:" + commandStr);
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command.CommandText = commandStr;
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command.ExecuteNonQuery();
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}
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#endregion
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#region 查
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public SqliteDataReader Select(string tableName, List<DataBaseFitter> fitterList = null, int limitNum = 0)
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{
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string condition = "";
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if (fitterList != null)
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{
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for (int i = 0; i < fitterList.Count; i++)
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{
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if (i == 0)
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{
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condition += $"WHERE {fitterList[i].columnName} {DataBaseFitter.FormatFitter(fitterList[i].fitterType)} {fitterList[i].fitterValue}";
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}
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else
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{
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condition += $" AND {fitterList[i].columnName} {DataBaseFitter.FormatFitter(fitterList[i].fitterType)} {fitterList[i].fitterValue}";
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}
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}
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}
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string limit = limitNum > 0 ? $"LIMIT {limitNum}" : "";
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string commandStr = $"SELECT * FROM {tableName} {condition} {limit};";
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Debug.Log("Sqlite查询表记录Sql:" + commandStr);
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command.CommandText = commandStr;
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SqliteDataReader read = command.ExecuteReader();
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return read;
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}
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#endregion
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}
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}
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