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pgLab/mainwindow.cpp

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#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "QueryResultModel.h"
#include "QueryExplainModel.h"
#include "sqlhighlighter.h"
#include <QTextTable>
#include <QTimer>
#include <windows.h>
#include "json/json.h"
#include "explaintreemodelitem.h"
//#include <thread>
namespace pg = Pgsql;
const char * test_query =
//"SELECT id, program, version, lic_bedrijf, lic_plaats, "
//"lic_number, callstack_crc_1, callstack_crc_2, callstack_crc_3, exception_class, "
//"exception_message \nFROM foutrapport"
"SELECT f1.id, f1.program, f1.version, f1.lic_number, f1.callstack_crc_1, f1.callstack_crc_2, array_agg(f2.id) \n"
"FROM foutrapport f1 JOIN foutrapport f2 USING (callstack_crc_2) \n"
"WHERE f1.actief \n"
"GROUP BY f1.id"
;
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
, ui(new Ui::MainWindow)
// , queryCancel(nullptr)
{
ui->setupUi(this);
QFont font;
font.setFamily("Source Code Pro");
font.setFixedPitch(true);
font.setPointSize(10);
ui->queryEdit->setFont(font);
highlighter.reset(new SqlHighlighter(ui->queryEdit->document()));
ui->queryEdit->setPlainText(test_query);
ui->connectionStringEdit->setText("user=postgres dbname=foutrapport password=admin");
QAction *action;
action = ui->mainToolBar->addAction("connect");
connect(action, &QAction::triggered, this, &MainWindow::startConnect);
// action = ui->mainToolBar->addAction("execute");
// connect(action, &QAction::triggered, this, &MainWindow::performQuery);
// action = ui->mainToolBar->addAction("explain");
// connect(action, &QAction::triggered, this, &MainWindow::performExplain);
// action = ui->mainToolBar->addAction("cancel");
// connect(action, &QAction::triggered, this, &MainWindow::cancel_query);
m_dbConnection.setStateCallback([this](ASyncDBConnection::State st)
{
QueueTask([this, st]() { connectionStateChanged(st); });
});
}
MainWindow::~MainWindow()
{
m_dbConnection.closeConnection();
m_dbConnection.setStateCallback(nullptr);
}
void MainWindow::QueueTask(TSQueue::t_Callable c)
{
m_taskQueue.add(c);
// Theoretically this needs to be only called if the queue was empty because otherwise it already would
// be busy emptying the queue. For now however I think it is safer to call it just to make sure.
QMetaObject::invokeMethod(this, "processCallableQueue", Qt::QueuedConnection); // queues on main thread
}
void MainWindow::processCallableQueue()
{
if (!m_taskQueue.empty()) {
auto c = m_taskQueue.pop();
c();
if (!m_taskQueue.empty()) {
QTimer::singleShot(0, this, SLOT(processCallableQueue()));
}
}
}
void MainWindow::connectionStateChanged(ASyncDBConnection::State state)
{
QString status_str;
switch (state) {
case ASyncDBConnection::State::NotConnected:
status_str = tr("Geen verbinding");
break;
case ASyncDBConnection::State::Connecting:
status_str = tr("Verbinden");
break;
case ASyncDBConnection::State::Connected:
status_str = tr("Verbonden");
break;
case ASyncDBConnection::State::QuerySend:
status_str = tr("Query verstuurd");
break;
case ASyncDBConnection::State::CancelSend:
status_str = tr("Query geannuleerd");
break;
}
statusBar()->showMessage(status_str);
}
void MainWindow::startConnect()
{
// if (connection == nullptr) {
// connection = std::make_unique<pg::Connection>();
// }
// QString connstr = ui->connectionStringEdit->text();
// bool ok = connection->connectStart(connstr + " application_name=Ivory client_encoding=utf8");
// if (ok && connection->status() != CONNECTION_BAD) {
// // Start polling
// int s = connection->socket();
// connectingState.notifier = std::make_unique<QSocketNotifier>(s, QSocketNotifier::Write);
// connect(connectingState.notifier.get(), &QSocketNotifier::activated, this, &MainWindow::socket_activate_connect);
// connectingState.poll_state = PGRES_POLLING_WRITING;
// statusBar()->showMessage(tr("Connecting"));
// }
// else {
// statusBar()->showMessage(tr("Connecting fail"));
// }
std::string connstr = ui->connectionStringEdit->text().toUtf8().data();
m_dbConnection.setupConnection(connstr);
}
//void MainWindow::socket_activate_connect(int )
//{
// connectingState.poll_state = connection->connectPoll();
// if (connectingState.poll_state == PGRES_POLLING_OK) {
// connection->setNoticeReceiver(
// std::bind(&MainWindow::processNotice, this, std::placeholders::_1));
// statusBar()->showMessage(tr("Connected"));
// connectingState.notifier.reset();
// }
// else if (connectingState.poll_state == PGRES_POLLING_FAILED) {
// statusBar()->showMessage(tr("Connection failed"));
// connectingState.notifier.reset();
// }
// else if (connectingState.poll_state == PGRES_POLLING_READING) {
// statusBar()->showMessage(tr("Connecting.."));
// connectingState.notifier = std::make_unique<QSocketNotifier>(connection->socket(), QSocketNotifier::Read);
// connect(connectingState.notifier.get(), &QSocketNotifier::activated, this, &MainWindow::socket_activate_connect);
// }
// else if (connectingState.poll_state == PGRES_POLLING_WRITING) {
// statusBar()->showMessage(tr("Connecting..."));
// connectingState.notifier = std::make_unique<QSocketNotifier>(connection->socket(), QSocketNotifier::Write);
// connect(connectingState.notifier.get(), &QSocketNotifier::activated, this, &MainWindow::socket_activate_connect);
// }
//}
//void MainWindow::performQuery()
//{
// ui->ResultView->setModel(nullptr);
// resultModel.reset();
// ui->messagesEdit->clear();
// queryCancel = std::move(connection->getCancel());
// QString command = ui->queryEdit->toPlainText();
// std::thread([this,command]()
// {
// auto res = std::make_shared<Pgsql::Result>(connection->query(command));
// QueueTask([this, res]() { query_ready(std::move(*res)); });
// }).detach();
//}
//void MainWindow::query_ready(Pgsql::Result dbres)
//{
// if (dbres) {
// auto st = dbres.resultStatus();
// if (st == PGRES_TUPLES_OK) {
// resultModel.reset(new QueryResultModel(nullptr , std::move(dbres)));
// ui->ResultView->setModel(resultModel.get());
// statusBar()->showMessage(tr("Query ready."));
// }
// else {
// if (st == PGRES_EMPTY_QUERY) {
// statusBar()->showMessage(tr("Empty query."));
// }
// else if (st == PGRES_COMMAND_OK) {
// statusBar()->showMessage(tr("Command OK."));
// }
// else if (st == PGRES_COPY_OUT) {
// statusBar()->showMessage(tr("COPY OUT."));
// }
// else if (st == PGRES_COPY_IN) {
// statusBar()->showMessage(tr("COPY IN."));
// }
// else if (st == PGRES_BAD_RESPONSE) {
// statusBar()->showMessage(tr("BEAD RESPONSE."));
// }
// else if (st == PGRES_NONFATAL_ERROR) {
// statusBar()->showMessage(tr("NON FATAL ERROR."));
// }
// else if (st == PGRES_FATAL_ERROR) {
// statusBar()->showMessage(tr("FATAL ERROR."));
// }
// else if (st == PGRES_COPY_BOTH) {
// statusBar()->showMessage(tr("COPY BOTH shouldn't happen is for replication."));
// }
// else if (st == PGRES_SINGLE_TUPLE) {
// statusBar()->showMessage(tr("SINGLE TUPLE result."));
// }
// else {
// statusBar()->showMessage(tr("No tuples returned, possibly an error..."));
// }
// receiveNotice(dbres.diagDetails());
// }
// }
// else {
// statusBar()->showMessage(tr("Query cancelled."));
// }
//}
//void MainWindow::performExplain()
//{
// ui->ResultView->setModel(nullptr);
// resultModel.reset();
// ui->messagesEdit->clear();
// queryCancel = std::move(connection->getCancel());
// QString command = "EXPLAIN (ANALYZE, VERBOSE, BUFFERS, FORMAT JSON) ";
// command += ui->queryEdit->toPlainText();
//// explainFuture = std::async(std::launch::async, [this,command]()-> std::unique_ptr<ExplainRoot>
// std::thread([this,command]()
// {
// std::shared_ptr<ExplainRoot> explain;
// auto res = connection->query(command);
// if (res.getCols() == 1 && res.getRows() == 1) {
// std::string s = res.getVal(0, 0);
// Json::Value root; // will contains the root value after parsing.
// Json::Reader reader;
// bool parsingSuccessful = reader.parse(s, root);
// if (parsingSuccessful) {
// explain = ExplainRoot::createFromJson(root);
// }
// }
// QueueTask([this, explain]() { explain_ready(explain); });
// }).detach();
//}
//void MainWindow::explain_ready(ExplainRoot::SPtr explain)
//{
// if (explain) {
// explainModel.reset(new QueryExplainModel(nullptr, explain));
// ui->explainTreeView->setModel(explainModel.get());
// ui->explainTreeView->expandAll();
// ui->explainTreeView->setColumnWidth(0, 200);
// ui->explainTreeView->setColumnWidth(1, 80);
// ui->explainTreeView->setColumnWidth(2, 80);
// ui->explainTreeView->setColumnWidth(3, 80);
// ui->explainTreeView->setColumnWidth(4, 80);
// ui->explainTreeView->setColumnWidth(5, 80);
// ui->explainTreeView->setColumnWidth(6, 600);
// statusBar()->showMessage(tr("Explain ready."));
// }
// else {
// statusBar()->showMessage(tr("Explain failed."));
// }
//}
//void MainWindow::cancel_query()
//{
// queryCancel.cancel();
//}
//void MainWindow::processNotice(const PGresult *result)
//{
// qRegisterMetaType<Pgsql::ErrorDetails>("Pgsql::ErrorDetails");
// pg::ErrorDetails details = pg::ErrorDetails::createErrorDetailsFromPGresult(result);
// QMetaObject::invokeMethod(this, "receiveNotice", Qt::AutoConnection, Q_ARG(Pgsql::ErrorDetails, details)); // queues on main thread
//}
//void MainWindow::receiveNotice(Pgsql::ErrorDetails notice)
//{
// QTextCursor cursor = ui->messagesEdit->textCursor();
// cursor.movePosition(QTextCursor::End, QTextCursor::MoveAnchor);
//// QString msg;
//// cursor.insertText("TEST\r\n");
// QTextTable *table = cursor.insertTable(4, 2);
// if (table) {
// table->cellAt(1, 0).firstCursorPosition().insertText("State");
// table->cellAt(1, 1).firstCursorPosition().insertText(QString::fromStdString(notice.state));
// table->cellAt(2, 0).firstCursorPosition().insertText("Primary");
// table->cellAt(2, 1).firstCursorPosition().insertText(QString::fromStdString(notice.messagePrimary));
// table->cellAt(3, 0).firstCursorPosition().insertText("Detail");
// table->cellAt(3, 1).firstCursorPosition().insertText(QString::fromStdString(notice.messageDetail));
// }
//}
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