75 lines
2.3 KiB
C#
75 lines
2.3 KiB
C#
using CalendarNotepad.Models;
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using SqlSugar;
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using System.Text;
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using System.Text.RegularExpressions;
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namespace CalendarNotepad.Extends
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{
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/// <summary>
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/// 数据库上下文
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/// </summary>
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public class DbContext:SqlSugar.SqlSugarClient
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{
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public DbContext() : base(GetConfig()) {
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}
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public static ConnectionConfig GetConfig() => new() {
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DbType = DbType.Sqlite,
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ConnectionString = AppConfig.SqliteFileName,
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IsAutoCloseConnection = false,
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};
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/// <summary>
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/// 初始化数据库
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/// </summary>
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public void DbInit() {
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using var db = new DbContext();
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db.CodeFirst.InitTables<WorkUnit>();
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db.CodeFirst.InitTables<PlusFileUnit>();
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db.CodeFirst.InitTables<WorkUnitPlusFile>();
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}
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/// <summary>
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/// 清除数据库垃圾
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/// </summary>
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public string DbClean() {
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StringBuilder sb = new();
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int i;
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i = this.Deleteable<WorkUnitPlusFile>()
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.Where(a => !SqlFunc.Subqueryable<WorkUnit>().Where(b => b.WorkDay == a.WorkDay).Any())
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.ExecuteCommand();
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sb.AppendLine($"WorkUnitPlusFile 清除{i}条数据。");
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i = this.Deleteable<PlusFileUnit>()
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.Where(a => !SqlFunc.Subqueryable<WorkUnitPlusFile>().Where(b => b.FileKey == a.FileId).Any())
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.ExecuteCommand();
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sb.AppendLine($"PlusFileUnit 清除{i}条数据。");
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return sb.ToString();
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}
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/// <summary>
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/// 压缩数据库文件
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/// </summary>
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/// <returns></returns>
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public string DbVacuum() {
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var file = this.SqliteDbfile;
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var oldSize = new FileInfo(file).Length;
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this.Ado.ExecuteCommand("VACUUM;");
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var newSize = new FileInfo(file).Length;
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return $"数据库压缩：原始{oldSize},压缩后{newSize}";
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}
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/// <summary>
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/// sqllite数据库文件
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/// </summary>
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public string SqliteDbfile {
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get {
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var regex = new Regex(@"DataSource\s*=\s*(?<key>.*?);");
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var mc = regex.Match(AppConfig.SqliteFileName);
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var file = mc.Groups["key"].Value;
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return file;
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}
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}
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}
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}
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