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utilSQLite.go
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utilSQLite.go
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// Copyright (c) 2023 gpress Authors.
//
// This file is part of gpress.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package main
import (
"context"
"database/sql"
"fmt"
"os"
"runtime"
"gitee.com/chunanyong/zorm"
// 00.引入数据库驱动
"github.com/mattn/go-sqlite3"
)
var dbDao *zorm.DBDao
var dbDaoConfig = zorm.DataSourceConfig{
DSN: sqliteDBfile,
DriverName: "sqlite3_simple", // 使用simple分词器会注册这个驱动名
Dialect: "sqlite",
MaxOpenConns: 50,
MaxIdleConns: 50,
ConnMaxLifetimeSecond: 600,
SlowSQLMillis: -1,
}
// 全局存放 表对象,启动之后,所有的表都通过这个map获取,一个表只能打开一次,类似数据库连接,用一个对象操作
//var TableMap map[string]bleve.Table = make(map[string]bleve.Table)
//var TableMap sync.Map
// 初始化 sqlite数据库
func checkSQLiteStatus() bool {
const failSuffix = ".fail"
if failDB := datadir + "gpress.db" + failSuffix; pathExist(failDB) {
FuncLogError(fmt.Errorf("请确认[%s]是否需要手动重命名为[gpress.db],不需要请手动删除[%s]", failDB, failDB))
return false
}
defaultFtsFile := datadir + "fts5/libsimple"
//CPU架构
goarch := runtime.GOARCH
ftsFile := defaultFtsFile + "-" + goarch
if !pathExist(ftsFile) { //文件不存在,使用默认的地址
ftsFile = defaultFtsFile
}
//注册fts5的simple分词器,建议使用jieba分词
//需要 --tags "fts5"
sql.Register("sqlite3_simple", &sqlite3.SQLiteDriver{
Extensions: []string{
ftsFile, //不要加后缀,它会自己处理,这样代码也统一
},
})
var err error
dbDao, err = zorm.NewDBDao(&dbDaoConfig)
if dbDao == nil || err != nil { //数据库初始化失败
if db := datadir + "gpress.db"; pathExist(db) {
_ = os.Rename(db, db+failSuffix)
}
return false
}
//初始化结巴分词的字典
finder := zorm.NewFinder().Append("SELECT jieba_dict(?)", datadir+"dict")
fts5jieba := ""
_, err = zorm.QueryRow(context.Background(), finder, &fts5jieba)
if err != nil {
return false
}
finder = zorm.NewFinder().Append("select jieba_query(?)", "让数据自由一点点,让世界美好一点点")
_, err = zorm.QueryRow(context.Background(), finder, &fts5jieba)
if err != nil {
return false
}
//fmt.Println(fts5jieba)
isInit := pathExist(datadir + "gpress.db")
if !isInit { //需要初始化数据库
return isInit
}
if tableExist(tableContentName) {
return true
}
sqlByte, err := os.ReadFile("gpressdatadir/gpress.sql")
if err != nil {
panic(err)
}
createTableSQL := string(sqlByte)
if createTableSQL == "" {
panic("gpressdatadir/gpress.sql 文件异常")
}
ctx := context.Background()
_, err = execNativeSQL(ctx, createTableSQL)
if err != nil {
panic(err)
}
return true
}
func tableExist(tableName string) bool {
finder := zorm.NewSelectFinder("sqlite_master", "count(*)").Append("WHERE type=? and name=?", "table", tableName)
count := 0
zorm.QueryRow(context.Background(), finder, &count)
return count > 0
}
/*
// 保存新表
func saveEntityMap(ctx context.Context, newTable zorm.IEntityMap) (ResponseData, error) {
responseData := ResponseData{StatusCode: 1}
id := ""
newId, ok := newTable.GetDBFieldMap()["id"]
if ok {
id = newId.(string)
}
if id == "" {
id = FuncGenerateStringID()
}
newTable.Set("id", id)
if newTable.GetDBFieldMap()["sortNo"] == 0 {
count, _ := selectTableCount(ctx, newTable.GetTableName())
newTable.Set("sortNo", count)
}
_, err := zorm.Transaction(ctx, func(ctx context.Context) (interface{}, error) {
_, err := zorm.InsertEntityMap(ctx, newTable)
return nil, err
})
if err != nil {
FuncLogError(err)
responseData.StatusCode = 304
responseData.Message = "建立表异常"
return responseData, err
}
responseData.StatusCode = 200
responseData.Message = "保存成功"
responseData.Data = id
return responseData, err
}
*/
func updateTable(ctx context.Context, newMap zorm.IEntityMap) error {
_, err := zorm.Transaction(ctx, func(ctx context.Context) (interface{}, error) {
_, err := zorm.UpdateEntityMap(ctx, newMap)
return nil, err
})
return err
}
func deleteById(ctx context.Context, tableName string, id string) error {
finder := zorm.NewDeleteFinder(tableName).Append(" WHERE id=?", id)
_, err := zorm.Transaction(ctx, func(ctx context.Context) (interface{}, error) {
_, err := zorm.UpdateFinder(ctx, finder)
return nil, err
})
return err
}
func deleteAll(ctx context.Context, tableName string) error {
finder := zorm.NewDeleteFinder(tableName)
_, err := zorm.Transaction(ctx, func(ctx context.Context) (interface{}, error) {
_, err := zorm.UpdateFinder(ctx, finder)
return nil, err
})
return err
}
func execNativeSQL(ctx context.Context, nativeSQL string) (bool, error) {
finder := zorm.NewFinder().Append(nativeSQL)
finder.InjectionCheck = false
_, err := zorm.Transaction(ctx, func(ctx context.Context) (interface{}, error) {
_, err := zorm.UpdateFinder(ctx, finder)
return nil, err
})
if err != nil {
return false, err
}
return true, nil
}
func selectTableCount(ctx context.Context, tableName string) (int, error) {
finder := zorm.NewSelectFinder(tableName, "count(*)")
count := 0
_, err := zorm.QueryRow(ctx, finder, &count)
return count, err
}