314 lines
9.1 KiB
C++
Executable File
314 lines
9.1 KiB
C++
Executable File
#include "DatabaseManager.h"
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#include "Constant.h"
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#include "Log.h"
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#include <QCoreApplication>
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#include <QMutex>
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#include <QtSql/QSqlError>
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#include <QtSql/QSqlQuery>
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DatabaseManager* DatabaseManager::instance = nullptr;
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DatabaseManager::DatabaseManager()
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{
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if (QSqlDatabase::contains("qt_sql_default_connection")) {
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db = QSqlDatabase::database("qt_sql_default_connection");
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} else {
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db = QSqlDatabase::addDatabase("QSQLITE");
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db.setDatabaseName(Constant::DatabasePath);
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}
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}
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DatabaseManager::~DatabaseManager()
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{
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db.close();
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}
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DatabaseManager* DatabaseManager::getInstace()
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{
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if (instance == nullptr) {
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static QMutex mutex;
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QMutexLocker locker(&mutex);
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if (instance == nullptr) {
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instance = new DatabaseManager();
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}
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}
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return instance;
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}
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/**
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* @brief 打开数据库
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* @return
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*/
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bool DatabaseManager::open()
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{
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if (!db.open()) {
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Log::error("database open failed");
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qDebug() << db.lastError();
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return false;
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}
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Log::info("database open success");
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return true;
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}
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/**
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* @brief 关闭数据库
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*/
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void DatabaseManager::close()
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{
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if (db.isOpen())
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db.close();
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}
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/**
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* @brief 添加数据
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* @param file
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*/
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bool DatabaseManager::insert(File file)
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{
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QSqlQuery query;
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query.prepare("insert into file (channel, datetime, filename) values (?, ?, ?)");
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query.addBindValue(file.channel);
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query.addBindValue(file.datetime);
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query.addBindValue(file.filename);
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if (query.exec()) {
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return true;
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} else {
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Log::error("insert one record into database failed, reason: {}",
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query.lastError().databaseText().toStdString() + "," + query.lastError().driverText().toStdString());
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return false;
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}
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}
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/**
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* @brief 查询数据
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* @param params 参数
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* @return
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*/
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QList<DatabaseManager::File> DatabaseManager::get(QVariantMap params)
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{
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QList<DatabaseManager::File> result;
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QSqlQuery query;
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QString sql = "select * from file where channel=? and datetime like \'%1\'";
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QString year = params.value("year").toString();
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QString month = params.value("month").toString();
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QString day = params.value("day").toString();
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Channel chn = static_cast<Channel>(params.value("channel").toInt());
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if (year.isEmpty() || month.isEmpty() || day.isEmpty() || (chn != MainChannel && chn != SecondaryChannel)) {
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Log::error("select from database error, params error");
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return result;
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}
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query.prepare(sql);
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query.bindValue(0, chn);
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query.bindValue(1, QString("%1-%2-%3%"));
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if (query.exec()) {
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while (query.next()) {
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DatabaseManager::File file;
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file.id = query.value("id").toInt();
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file.channel = static_cast<DatabaseManager::Channel>(query.value("channel").toInt());
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file.datetime = query.value("datetime").toString();
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file.filename = query.value("filename").toString();
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result.push_back(file);
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}
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} else {
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Log::error("select from database failed, reason: {}",
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query.lastError().databaseText().toStdString());
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}
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Log::info("record of one day: {}", result.length());
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return result;
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}
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/**
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* @brief 获取某个通道的所有文件列表
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* @param chn
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* @return
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*/
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QList<DatabaseManager::File> DatabaseManager::get(DatabaseManager::Channel chn)
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{
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QList<DatabaseManager::File> result;
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QSqlQuery query;
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QString sql = "select * from file where channel=?";
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query.prepare(sql);
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query.bindValue(0, chn);
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if (query.exec()) {
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while (query.next()) {
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DatabaseManager::File file;
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file.id = query.value("id").toInt();
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file.channel = static_cast<DatabaseManager::Channel>(query.value("channel").toInt());
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file.datetime = query.value("datetime").toString();
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file.filename = query.value("filename").toString();
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result.push_back(file);
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}
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} else {
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Log::error("select from database failed, reason: {}",
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query.lastError().databaseText().toStdString());
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}
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return result;
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}
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/**
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* @brief 获取前两条记录
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*/
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QList<DatabaseManager::File> DatabaseManager::getTopTwo()
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{
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QList<DatabaseManager::File> result;
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QSqlQuery query;
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query.prepare("select * from file limit 0,2");
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if (query.exec()) {
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while (query.next()) {
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DatabaseManager::File file;
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file.id = query.value("id").toInt();
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file.channel = static_cast<DatabaseManager::Channel>(query.value("channel").toInt());
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file.datetime = query.value("datetime").toString();
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file.filename = query.value("filename").toString();
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result.push_back(file);
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}
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} else {
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Log::error("select top two records from database failed, reason: {}",
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query.lastError().databaseText().toStdString());
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}
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return result;
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}
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/**
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* @brief 获取所有的年份
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* @return
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*/
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QStringList DatabaseManager::getAllYears(Channel chn)
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{
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QStringList result;
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QSqlQuery query;
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query.prepare(R"(
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select distinct strftime('%Y', datetime) as year
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from file
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order by year
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)");
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if (query.exec()) {
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while (query.next()) {
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QString year = query.value(0).toString();
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result.push_back(year);
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}
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} else {
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Log::error("select all years from database failed, reason: {}",
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query.lastError().databaseText().toStdString());
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}
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Log::info("number of year: {}", result.length());
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return result;
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}
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/**
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* @brief 获取某年所有的月份
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* @param year
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* @return
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*/
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QStringList DatabaseManager::getAllMonths(Channel chn, QString year)
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{
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QStringList result;
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QSqlQuery query;
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query.prepare(R"(
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select distinct strftime('%m', datetime) as month
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from file
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where channel = ? and strftime('%Y', datetime) = '?'
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order by month
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)");
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query.bindValue(0, chn);
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query.bindValue(1, year);
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if (query.exec()) {
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while (query.next()) {
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QString month = query.value(0).toString();
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result.push_back(month);
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}
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} else {
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Log::error("select all months of one year from database failed, reason: {}",
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query.lastError().databaseText().toStdString());
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}
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Log::info("number of month: {}", result.length());
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return result;
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}
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/**
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* @brief 某年某月的天数
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* @param year
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* @param month
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* @return
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*/
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QStringList DatabaseManager::getAllDays(Channel chn, QString year, QString month)
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{
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QStringList result;
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QSqlQuery query;
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query.prepare(R"(
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select distinct strftime('%d', datetime) as day
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from file
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where channel = ?
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and strftime('%Y', datetime) = '?'
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and strftime('%m', datetime) = '?'
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order by day
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)");
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query.bindValue(0, chn);
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query.bindValue(1, year);
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query.bindValue(2, month);
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if (query.exec()) {
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while (query.next()) {
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QString day = query.value(0).toString();
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result.push_back(day);
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}
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} else {
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Log::error("select all days of one month from database failed, reason: {}",
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query.lastError().databaseText().toStdString());
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}
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Log::info("number of day: {}", result.length());
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return result;
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}
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/**
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* @brief 根据通道和文件名删除记录，文件名格式yyyyMMddhhmmss
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* @param id
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* @return
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*/
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bool DatabaseManager::remove(DatabaseManager::Channel chn, QString name)
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{
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int id = -1;
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// 找到对应记录
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QSqlQuery query;
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query.prepare("select * from file where channel = ? and filename = ?");
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query.bindValue(0, chn);
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query.bindValue(1, name);
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if (query.exec()) {
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while (query.next()) {
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id = query.value(0).toInt();
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break;
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}
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} else {
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Log::info("cannot find the record, channel = {}, name = {}",
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int(chn),
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name.toStdString());
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return false;
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}
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// 未找到
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if (id == -1) {
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Log::info("cannot find the record, channel = {}, name = {}",
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int(chn),
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name.toStdString());
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return false;
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}
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Log::info("find the record, channel = {} , name = {}, and the id = {}",
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int(chn),
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name.toStdString(),
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id);
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query.clear();
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// 删除文件
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query.prepare("delete from file where id = ?");
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query.bindValue(0, id);
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if (query.exec()) {
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Log::info("delete one record from database, id = {}, channel = {}, name = {}",
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id,
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int(chn),
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name.toStdString());
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return true;
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} else {
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Log::error("delete one record from database failed, channel = {}, name = {}, reason: {}",
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(int)chn,
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name.toStdString(),
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query.lastError().driverText().toStdString() + ", " + query.lastError().databaseText().toStdString());
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return false;
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}
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}
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