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63 řádky
2.4 KiB
63 řádky
2.4 KiB
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 System.Threading.Tasks;
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namespace AppTime
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{
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/**
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* 初始化数据库
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*/
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class InitDB
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{
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private DB db;
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public InitDB()
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{
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db = DB.Instance;
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}
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public void Start()
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{
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// 创建数据表
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db.Execute("CREATE TABLE IF NOT EXISTS \"app\" (\"id\" INTEGER NOT NULL, \"process\" text NOT NULL," +
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"\"text\" TEXT NOT NULL DEFAULT process, " +
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"\"tagId\" INTEGER NOT NULL DEFAULT(0), " +
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"PRIMARY KEY(\"id\") ) WITHOUT ROWID");
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db.Execute("CREATE TABLE IF NOT EXISTS \"period\" ( \"timeStart\" DATETIME NOT NULL, \"timeEnd\" DATETIME NOT NULL, " +
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"\"winId\" INTEGER NOT NULL," +
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"PRIMARY KEY(\"timeStart\")," +
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"UNIQUE(\"timeStart\" ASC) )WITHOUT ROWID");
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db.Execute("CREATE TABLE IF NOT EXISTS \"tag\" ( \"id\" INTEGER NOT NULL, \"text\" TEXT NOT NULL," +
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"PRIMARY KEY(\"id\"), UNIQUE(\"id\" ASC), UNIQUE(\"text\" ASC) ) WITHOUT ROWID");
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db.Execute("CREATE TABLE IF NOT EXISTS \"win\" (\"id\" INTEGER NOT NULL," +
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"\"appId\" INTEGER NOT NULL, \"text\" TEXT NOT NULL, " +
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"\"tagId\" INTEGER NOT NULL DEFAULT(0), " +
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"PRIMARY KEY(\"id\") ) WITHOUT ROWID");
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// 创建索引
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long existIndex = (long)db.ExecuteData("SELECT count(*) FROM sqlite_master WHERE type=\"table\" AND name =\'is_index\'")[0][0];
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// 判断是否已经存在索引
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if (existIndex == 0)
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{
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db.Execute("CREATE UNIQUE INDEX \"ix_app\" ON \"app\"( \"process\" ASC )");
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db.Execute("CREATE INDEX \"ix_app_tagId\" ON \"app\" ( \"tagId\" ASC )");
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db.Execute("CREATE UNIQUE INDEX \"ix_period\" ON \"period\" ( \"timeStart\" ASC, \"timeEnd\" ASC )");
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db.Execute("CREATE UNIQUE INDEX \"ix_win\" ON \"win\" ( \"appId\" ASC, \"text\" ASC )");
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db.Execute("CREATE INDEX \"ix_win_tagId\" ON \"win\" (\"tagId\" ASC )");
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// 此表仅用于标识索引已经创建完成
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db.Execute("CREATE TABLE IF NOT EXISTS \"is_index\"( \"id\" INTEGER NOT NULL, PRIMARY KEY(\"id\"))");
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}
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}
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}
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}
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