Qt数据库应用之实现通用数据库清理

void frmDbClean::on_btnOpen_clicked()
{
    if (ui->btnOpen->text() == "打开数据库") {
        DbInfo dbInfo;
        dbInfo.connName = this->objectName();
        dbInfo.dbName = AppConfig::DbName3;
        dbInfo.hostName = AppConfig::HostName3;
        dbInfo.hostPort = AppConfig::HostPort3;
        dbInfo.userName = AppConfig::UserName3;
        dbInfo.userPwd = AppConfig::UserPwd3;

        QString dbType = AppConfig::DbType3.toUpper();
        if (dbType == "SQLITE") {
            dbInfo.dbName = DbHelper::getDbDefaultFile();
        }

        dbClean->setConnInfo(DbHelper::getDbType(dbType), dbInfo);
        if (dbClean->openDb()) {
            //dbClean->start();
            ui->btnOpen->setText("关闭数据库");
        } else {
            QString error = dbClean->getDatabase().lastError().text();
            QUIHelper::showMessageBoxError("打开数据库失败!\n" + error, 3);
        }
    } else {
        dbClean->stop();
        dbClean->closeDb();
        ui->btnOpen->setText("打开数据库");
        ui->btnStart->setText("启动服务");
        on_btnClear_clicked();
    }

    QTimer::singleShot(100, this, SLOT(getTables()));
    QTimer::singleShot(1000, this, SLOT(on_btnStart_clicked()));
}

void frmDbClean::on_btnCopy_clicked()
{
    //将数据库设置参数一键粘贴过来
    ui->cboxDbType->setCurrentIndex(ui->cboxDbType->findText(AppConfig::LocalDbType));
    ui->txtDbName->setText(AppConfig::LocalDbName);
    ui->txtHostName->setText(AppConfig::LocalHostName);
    ui->txtHostPort->setText(QString::number(AppConfig::LocalHostPort));
    ui->txtUserName->setText(AppConfig::LocalUserName);
    ui->txtUserPwd->setText(AppConfig::LocalUserPwd);
}

void frmDbClean::getTables()
{
    if (!dbClean->getOk()) {
        return;
    }

    //取出数据库对应的表集合
    QStringList tables = dbClean->getDatabase().tables();
    ui->cboxTables->clear();
    ui->cboxTables->addItems(tables);
    if (tables.contains("LogInfo")) {
        ui->cboxTables->setCurrentIndex(ui->cboxTables->findText("LogInfo"));
    }
}

void frmDbClean::on_btnDo_clicked()
{
    if (!dbClean->getOk()) {
        return;
    }

    QString tableName = ui->cboxTables->currentText();
    QString countName = ui->txtCountName->text();
    QString orderSql = ui->txtOrderSql->text();
    dbClean->setTableName(tableName);
    dbClean->setCountName(countName);
    dbClean->setWhereColumnName(countName);
    dbClean->setOrderSql(orderSql);

    //最大保留记录数量
    dbClean->setMaxCount(AppConfig::Count3 * 10000);
    //清理间隔
    dbClean->setCleanInterval(AppConfig::Interval3);
    dbClean->cleanData();
}