{"id":270832,"date":"2015-12-22T08:57:02","date_gmt":"2015-12-22T05:57:02","guid":{"rendered":"http:\/\/savepearlharbor.com\/?p=270832"},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-29T21:00:00","slug":"","status":"publish","type":"post","link":"https:\/\/savepearlharbor.com\/?p=270832","title":{"rendered":"QThread + QtSql: \u0410\u0441\u0438\u043d\u0445\u0440\u043e\u043d\u043d\u044b\u0435 \u0437\u0430\u043f\u0440\u043e\u0441\u044b"},"content":{"rendered":"<p>       \u041f\u0440\u0438 \u043d\u0430\u043f\u0438\u0441\u0430\u043d\u0438\u0438 \u043c\u043d\u043e\u0433\u043e\u043f\u043e\u0442\u043e\u0447\u043d\u044b\u0445 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u043d\u0430 Qt \u043c\u043d\u043e\u0433\u0438\u0435 \u0441\u0442\u0430\u043b\u043a\u0438\u0432\u0430\u043b\u0438\u0441\u044c \u0441 \u0442\u0435\u043c, \u0447\u0442\u043e \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f QtSql \u0441\u0442\u0440\u043e\u0433\u043e \u043e\u0434\u043d\u043e\u043f\u043e\u0442\u043e\u0447\u043d\u0430\u044f. \u0427\u0442\u043e \u0445\u0443\u0436\u0435, \u0432 \u043d\u0435\u0439 \u043d\u0435\u0442 \u043d\u0438 \u0435\u0434\u0438\u043d\u043e\u0433\u043e \u043c\u0435\u0442\u043e\u0434\u0430 \u0434\u043b\u044f \u0444\u043e\u043d\u043e\u0432\u043e\u0433\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0437\u0430\u043f\u0440\u043e\u0441\u0430. \u0410 \u0435\u0441\u043b\u0438 \u0437\u0430\u043f\u0440\u043e\u0441 \u0431\u043e\u043b\u044c\u0448\u043e\u0439 \u0438\u043b\u0438 \u043f\u0440\u043e\u0441\u0442\u043e \u0434\u043e\u043b\u0433\u0438\u0439, \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u0435\u0433\u043e \u0432 \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u043c \u043f\u043e\u0442\u043e\u043a\u0435 \u043d\u0430\u043c\u0435\u0440\u0442\u0432\u043e \u043f\u043e\u0434\u0432\u0435\u0441\u0438\u0442 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441.<\/p>\n<p>  \u0427\u0442\u043e \u043d\u0435\u0440\u0432\u0438\u0440\u0443\u0435\u0442 \u0435\u0449\u0451 \u0431\u043e\u043b\u044c\u0448\u0435, \u043d\u0438\u0433\u0434\u0435 \u043d\u0435\u0442 \u0445\u043e\u0442\u044c \u0441\u043a\u043e\u043b\u044c\u043a\u043e-\u043d\u0438\u0431\u0443\u0434\u044c \u0436\u0438\u0437\u043d\u0435\u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0442\u0430\u043a\u043e\u0439, \u043a\u0430\u0437\u0430\u043b\u043e\u0441\u044c \u0431\u044b, \u043d\u0443\u0436\u043d\u043e\u0439 \u0432\u0435\u0449\u0438. \u041c\u0430\u043a\u0441\u0438\u043c\u0443\u043c, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043c\u043e\u0436\u043d\u043e \u043d\u0430\u0439\u0442\u0438 \u2014 <a href=\"http:\/\/habrahabr.ru\/post\/164377\/\">\u043f\u0443\u043b \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0439<\/a>, \u0440\u0430\u0431\u043e\u0442\u0430\u044e\u0449\u0438\u0439 \u0432\u043f\u043e\u043b\u043d\u0435 \u0441\u0438\u043d\u0445\u0440\u043e\u043d\u043d\u043e. \u0427\u0442\u043e \u0436, \u0432\u0440\u0435\u043c\u044f \u0442\u0435\u0447\u0451\u0442, \u0432\u0441\u0451 \u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f.<br \/>  <a name=\"habracut\"><\/a>  <\/p>\n<div class=\"spoiler\"><b class=\"spoiler_title\">tl;dr<\/b><\/p>\n<div class=\"spoiler_text\">Worker.h:<\/p>\n<pre><code class=\"cpp\">#include &lt;QVariant&gt; #include &lt;QThread&gt; #include &lt;QSqlDatabase&gt;  typedef QVector&lt; QVariant &gt; VariantVector; typedef QVector&lt; VariantVector &gt; VariantVector2;  class Worker : public QObject {     Q_OBJECT public:     Worker();     virtual ~Worker();     bool init();     bool isInitiated();      static int queryNum();     static int exec(Worker * w, QString query, QStringList bindNames = QStringList(), VariantVector bindList = VariantVector());  private slots:     void slotExec(int num, QString query, QStringList bindNames, VariantVector bindList);  signals:     void signalExec(int, VariantVector2);     void queryError(int, const QSqlError &);  protected:     QThread * th;     QSqlDatabase db; }; <\/code><\/pre>\n<p>  Worker.cpp:<\/p>\n<pre><code class=\"cpp\">#include &lt;QSqlRecord&gt; #include &lt;QSqlQuery&gt; #include &lt;QSqlError&gt; #include &lt;QTimer&gt;  QString GenConnectionName(){     static int num = 0;     return QString(&quot;DBConnection%1&quot;).arg(num++); }   Worker::Worker(): QObject(){     th = new QThread(this);     qRegisterMetaType&lt;VariantVector&gt;(&quot;VariantVector&quot;);     qRegisterMetaType&lt;VariantVector2&gt;(&quot;VariantVector2&quot;); }  Worker::~Worker() {     th-&gt;terminate();     db.close();     th-&gt;deleteLater(); }   bool Worker::init() {     if (db.isOpen())         return true;     if (!th-&gt;isRunning())  {         th-&gt;start(QThread::LowPriority);         moveToThread(th);     }     if (!db.isOpen())  {         db = QSqlDatabase::addDatabase(&quot;QPSQL&quot;,connection);         db.setHostName(&quot;localhost&quot;);         db.setPort(5432);         db.setUserName(&quot;username&quot;);         db.setDatabaseName(&quot;postgres&quot;);         QTimer timer;         timer.start(10000);         forever {             if (db.isOpen()) break;             if (db.open()) break;             if (!timer.remainingTime()) break;             if (db.lastError().databaseText().contains(&quot;\u0412\u0410\u0416\u041d\u041e:  \u0441\u0438\u0441\u0442\u0435\u043c\u0430 \u0431\u0430\u0437 \u0434\u0430\u043d\u043d\u044b\u0445 \u0437\u0430\u043f\u0443\u0441\u043a\u0430\u0435\u0442\u0441\u044f&quot;) == 0)                 continue;     }    }     if (!db.isOpen())   return false;     return true; }  bool Worker::isInitiated() {     return th-&gt;isRunning() && db.isOpen(); }  int Worker::queryNum() {     static int i = 0;     return i++; }  int Worker::exec(Worker * w, QString q, QStringList s, VariantVector v) {     int i = queryNum();     QMetaObject::invokeMethod(w, &quot;slotExec&quot;, Qt::QueuedConnection, Q_ARG(int,i), Q_ARG(QString,q), Q_ARG(QStringList,s), Q_ARG(VariantVector,v));     return i; }  void Worker::slotExec(int num, QString query, QStringList bindNames, VariantVector bindList) {     QSqlQuery q(db);     q.prepare(query);     for (int i = 0; i &lt; bindNames.size(); ++i)         q.bindValue(bindNames[i],bindList[i]);     q.exec();     if (q.lastError().isValid())          emit queryError(q.lastError());     VariantVector2 vv;     QSqlRecord r = q.record();     int rn = r.count();     vv.push_back(VariantVector());     for (int i = 0; i &lt; rn; ++i)         vv[0].push_back(r.fieldName(i));     while(q.next()) {          static int j = -1; ++j;          vv.push_back(VariantVector());          for (int i = 0; i &lt; rn; ++i)              vv[j].push_back(q.value(i));     }     emit signalExec(num,vv); } <\/code><\/pre>\n<p>  Example.cpp:<\/p>\n<pre><code class=\"cpp\">class MainView { \/\/ ...     int id;     Worker w; public slots: void onTest(int mid, VariantVector2 ret) {     qDebug() &lt;&lt; mid;     if (id != mid) return;     foreach (VariantVector r, ret)         foreach (QVariant v, r)         qDebug() &lt;&lt; v; } public: void run() {     connect(&w,SIGNAL(signalExec(int,VariantVector2)),this,SLOT(onTest(int,VariantVector2)));     QStringList names;     VariantVector params;     names &lt;&lt; &quot;:myid&quot;;     params.push_back(3);    if (w.init());     id = Worker::exec(&w,&quot;select * from Table where not ID = :myid;&quot;,names,params);     qDebug() &lt;&lt; &quot;Finished!&quot;; } }; <\/code><\/pre>\n<p>  <\/p>\n<pre> Finished! QVariant(QString, &quot;id&quot;) QVariant(QString, &quot;code&quot;) QVariant(QString, &quot;prefasfk_id&quot;) QVariant(QString, &quot;creationdate&quot;) QVariant(QString, &quot;lasteditdate&quot;) QVariant(int, 1) QVariant(int, 10) QVariant(QString, &quot;&quot;) QVariant(QDateTime, QDateTime(2015-12-18 17:05:43.877 RTZ 5 (\u0437\u0438\u043c\u0430) Qt::TimeSpec(LocalTime))) QVariant(QDateTime, QDateTime(2015-12-18 17:05:43.877 RTZ 5 (\u0437\u0438\u043c\u0430) Qt::TimeSpec(LocalTime))) QVariant(int, 2) QVariant(int, 20) QVariant(QString, &quot;&quot;) QVariant(QDateTime, QDateTime(2015-12-18 17:05:45.729 RTZ 5 (\u0437\u0438\u043c\u0430) Qt::TimeSpec(LocalTime))) QVariant(QDateTime, QDateTime(2015-12-18 17:05:45.729 RTZ 5 (\u0437\u0438\u043c\u0430) Qt::TimeSpec(LocalTime))) QVariant(int, 4) QVariant(int, 40) QVariant(QString, &quot;&quot;) QVariant(QDateTime, QDateTime(2015-12-18 17:05:49.152 RTZ 5 (\u0437\u0438\u043c\u0430) Qt::TimeSpec(LocalTime))) QVariant(QDateTime, QDateTime(2015-12-18 17:05:49.152 RTZ 5 (\u0437\u0438\u043c\u0430) Qt::TimeSpec(LocalTime))) <\/pre>\n<p>  <\/div>\n<\/div>\n<p>  \u0427\u0442\u043e\u0431\u044b \u0432\u044b\u043d\u0435\u0441\u0442\u0438 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 \u0432 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0439 \u043f\u043e\u0442\u043e\u043a, \u0432\u043e\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u0441\u044f \u0441\u0442\u0430\u0440\u043e\u0439 \u0434\u043e\u0431\u0440\u043e\u0439 \u0441\u0432\u044f\u0437\u043a\u043e\u0439 QThread+QObject.<\/p>\n<div class=\"spoiler\"><b class=\"spoiler_title\">\u041d\u043e \u043d\u0435 \u0431\u0443\u0434\u0435\u043c \u043e\u0431 \u044d\u0442\u043e\u043c.<\/b><\/p>\n<div class=\"spoiler_text\">Worker.h:<\/p>\n<pre><code class=\"cpp\">#include &lt;QVariant&gt; #include &lt;QThread&gt; #include &lt;QSqlDatabase&gt;  class Worker : public QObject {     Q_OBJECT public:     Worker();     virtual ~Worker();     bool init();     bool isInitiated();      static int queryNum();  protected:     QThread * th;     QSqlDatabase db; }; <\/code><\/pre>\n<p>  Worker.cpp:<\/p>\n<pre><code class=\"cpp\">#include &lt;QSqlRecord&gt; #include &lt;QSqlQuery&gt; #include &lt;QSqlError&gt; #include &lt;QTimer&gt;  QString GenConnectionName(){     static int num = 0;     return QString(&quot;DBConnection%1&quot;).arg(num++); }  Worker::Worker(): QObject(){     th = new QThread(this); }  Worker::~Worker() {     th-&gt;terminate();     db.close();     th-&gt;deleteLater(); }  bool Worker::init() {     if (db.isOpen())         return true;     if (!th-&gt;isRunning())  {         th-&gt;start(QThread::LowPriority);         moveToThread(th);     }     if (!db.isOpen())  {         db = QSqlDatabase::addDatabase(&quot;QPSQL&quot;,connection);         db.setHostName(&quot;localhost&quot;);         db.setPort(5432);         db.setUserName(&quot;username&quot;);         db.setDatabaseName(&quot;postgres&quot;);         QTimer timer;         timer.start(10000);         forever {             if (db.isOpen()) break;             if (db.open()) break;             if (!timer.remainingTime()) break;             if (db.lastError().databaseText().contains(&quot;\u0412\u0410\u0416\u041d\u041e:  \u0441\u0438\u0441\u0442\u0435\u043c\u0430 \u0431\u0430\u0437 \u0434\u0430\u043d\u043d\u044b\u0445 \u0437\u0430\u043f\u0443\u0441\u043a\u0430\u0435\u0442\u0441\u044f&quot;) == 0)                 continue;     }    }     if (!db.isOpen())   return false;     return true; }  bool Worker::isInitiated() {     return th-&gt;isRunning() && db.isOpen(); }  int Worker::queryNum() {     static int i = 0;     return i++; } <\/code><\/pre>\n<p>  <\/div>\n<\/div>\n<p>  \u041f\u043e\u0442\u043e\u043a \u0441 \u0441\u043e\u0431\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u043c \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435\u043c \u0441\u043e\u0437\u0434\u0430\u043d, \u043d\u043e \u0437\u0430\u043f\u0440\u043e\u0441\u044b \u0432\u0441\u0451 \u0440\u0430\u0432\u043d\u043e \u0431\u0443\u0434\u0443\u0442 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0442\u044c\u0441\u044f \u0441\u0438\u043d\u0445\u0440\u043e\u043d\u043d\u043e. \u0427\u0442\u043e\u0431\u044b \u043f\u043e\u0431\u043e\u0440\u043e\u0442\u044c \u044d\u0442\u0443 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0443, \u0432\u043e\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u0441\u044f \u0441\u0442\u0430\u0440\u044b\u043c\u0438 \u0434\u043e\u0431\u0440\u044b\u043c\u0438 \u0441\u0438\u0433\u043d\u0430\u043b\u0430\u043c\u0438-\u0441\u043b\u043e\u0442\u0430\u043c\u0438. \u041a\u0430\u043a \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u043e, \u043f\u0440\u0438 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0435 \u043c\u0435\u0436\u0434\u0443 \u043f\u043e\u0442\u043e\u043a\u0430\u043c\u0438 \u043e\u043d\u0438 \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u0443\u044e\u0442\u0441\u044f \u0432 \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u044f \u0438 \u0441\u0442\u0430\u0432\u044f\u0442\u0441\u044f \u0432 \u043e\u0447\u0435\u0440\u0435\u0434\u044c. \u041e\u0434\u043d\u0430\u043a\u043e, \u0435\u0441\u0442\u044c \u043e\u0434\u043d\u0430 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430. [\u0411\u043e\u0440\u043e\u043c\u0438\u0440.gif] \u041d\u0435\u043b\u044c\u0437\u044f \u043f\u0440\u043e\u0441\u0442\u043e \u0432\u0437\u044f\u0442\u044c, \u0438 \u0434\u043e\u0431\u0430\u0432\u0438\u0442\u044c \u0432\u044b\u0437\u043e\u0432 \u0441\u043b\u043e\u0442\u0430. \u0415\u0441\u043b\u0438 \u0432\u044b\u0437\u044b\u0432\u0430\u0442\u044c \u043c\u0435\u0442\u043e\u0434 \u043a\u043b\u0430\u0441\u0441\u0430 \u043a\u0430\u043a \u043e\u0431\u044b\u0447\u043d\u043e, Qt \u0437\u0430\u0431\u043b\u043e\u043a\u0438\u0440\u0443\u0435\u0442 \u043e\u0431\u0430 \u043f\u043e\u0442\u043e\u043a\u0430, \u0438 \u0432\u044b\u0437\u044b\u0432\u0430\u044e\u0449\u0438\u0439, \u0438 \u0432\u044b\u0437\u044b\u0432\u0430\u0435\u043c\u044b\u0439, \u043f\u043e\u043a\u0430 \u043e\u043d\u0438 \u043d\u0435 \u043e\u043a\u0430\u0436\u0443\u0442\u0441\u044f \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u044b \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043c\u0435\u0442\u043e\u0434. \u0427\u0442\u043e\u0431\u044b \u0438\u043c\u0435\u043d\u043d\u043e \u0434\u043e\u0431\u0430\u0432\u0438\u0442\u044c \u0432\u044b\u0437\u043e\u0432 \u0441\u043b\u043e\u0442\u0430, \u043d\u0443\u0436\u043d\u043e \u0432\u043e\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u043c\u0435\u0442\u043e\u0434\u043e\u043c QMetaObject::invokeMethod. \u0417\u0430\u043c\u0435\u0442\u044c\u0442\u0435, \u044f \u043e\u0441\u0442\u0430\u0432\u0438\u043b \u043c\u0435\u0442\u043e\u0434 Worker::exec \u0441\u0442\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u043c \u0438\u043c\u0435\u043d\u043d\u043e \u0438\u0437 \u0442\u0435\u0445 \u0436\u0435 \u0431\u043b\u043e\u043a\u0438\u0440\u0443\u044e\u0449\u0438\u0445 \u043f\u043e\u0431\u0443\u0436\u0434\u0435\u043d\u0438\u0439.<\/p>\n<pre><code class=\"cpp\">\/\/Worker.h class Worker : public QObject {     \/\/... public:     static int exec(Worker * w, QString query, QStringList bindNames = QStringList(), VariantVector bindList = VariantVector());  private slots:     void slotExec(int num, QString query, QStringList bindNames, VariantVector bindList);  signals:     void signalExec(int, VariantVector2);     void queryError(int, const QSqlError &); \/\/... };  \/\/Worker.cpp int Worker::exec(Worker * w, QString q, QStringList s, VariantVector v) {     int i = queryNum();     QMetaObject::invokeMethod(w, &quot;slotExec&quot;, Qt::QueuedConnection, Q_ARG(int,i), Q_ARG(QString,q), Q_ARG(QStringList,s), Q_ARG(VariantVector,v));     return i; }  void Worker::slotExec(int num, QString query, QStringList bindNames, VariantVector bindList) {     QSqlQuery q(db);     q.prepare(query);     for (int i = 0; i &lt; bindNames.size(); ++i)         q.bindValue(bindNames[i],bindList[i]);     q.exec();     if (q.lastError().isValid())          emit queryError(q.lastError());     VariantVector2 vv;     QSqlRecord r = q.record();     int rn = r.count();     vv.push_back(VariantVector());     for (int i = 0; i &lt; rn; ++i)         vv[0].push_back(r.fieldName(i));     while(q.next()) {          static int j = -1; ++j;          vv.push_back(VariantVector());          for (int i = 0; i &lt; rn; ++i)              vv[j].push_back(q.value(i));     }     emit signalExec(num,vv); } <\/code><\/pre>\n<p>  \u041f\u043e\u0447\u0442\u0438 \u0433\u043e\u0442\u043e\u0432\u043e. \u041e\u0434\u043d\u0430\u043a\u043e, \u0435\u0441\u043b\u0438 \u0441\u0435\u0439\u0447\u0430\u0441 \u0437\u0430\u043f\u0443\u0441\u0442\u0438\u0442\u044c \u0438\u0441\u0445\u043e\u0434\u043d\u0438\u043a\u0438, \u043c\u0435\u0442\u0430\u043f\u0440\u043e\u0446\u0435\u0441\u043e\u0440 \u043e\u0442\u043a\u0430\u0436\u0435\u0442\u0441\u044f \u043f\u0435\u0440\u0435\u0434\u0430\u0432\u0430\u0442\u044c \u0434\u0430\u043d\u043d\u044b\u0435, \u0441\u043e\u0441\u043b\u0430\u0432\u0448\u0438\u0441\u044c \u043d\u0430 \u043d\u0435\u0438\u0437\u0432\u0435\u0441\u0442\u043d\u044b\u0439 \u0442\u0438\u043f \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u043e\u0432. \u0418 \u0432 \u0447\u0451\u043c-\u0442\u043e \u043e\u043d \u043f\u0440\u0430\u0432. \u041d\u0443 \u0447\u0442\u043e \u0436, \u0434\u0430\u0432\u0430\u0439\u0442\u0435 \u043f\u043e\u0437\u043d\u0430\u043a\u043e\u043c\u0438\u043c \u043d\u0430\u0448\u0438 \u0445 \u0433\u0435\u0440\u043e\u0435\u0432.<\/p>\n<pre><code class=\"cpp\">\/\/Worker.h typedef QVector&lt; QVariant &gt; VariantVector; typedef QVector&lt; VariantVector &gt; VariantVector2;  \/\/Worker.cpp Worker::Worker(): QObject(){     th = new QThread(this);     qRegisterMetaType&lt;VariantVector&gt;(&quot;VariantVector&quot;);     qRegisterMetaType&lt;VariantVector2&gt;(&quot;VariantVector2&quot;); } <\/code><\/pre>\n<p>  \u0422\u0435\u043f\u0435\u0440\u044c \u0432\u0441\u0451, \u043e\u0441\u0442\u0430\u043b\u043e\u0441\u044c \u0442\u043e\u043b\u044c\u043a\u043e \u0441\u043e\u0437\u0434\u0430\u0442\u044c \u0441\u043b\u043e\u0442\u044b, \u0441\u043e\u0435\u0434\u0438\u043d\u0438\u0442\u044c \u0438 \u0432\u044b\u0437\u0432\u0430\u0442\u044c. \u0423\u0447\u0442\u0438\u0442\u0435, \u0432 \u0434\u0430\u043d\u043d\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043f\u0435\u0440\u0432\u043e\u0439 \u0441\u0442\u0440\u043e\u043a\u043e\u0439 \u043f\u0435\u0440\u0435\u0434\u0430\u044e\u0442\u0441\u044f \u043d\u0430\u0437\u0432\u0430\u043d\u0438\u044f \u0441\u0442\u043e\u043b\u0431\u0446\u043e\u0432 \u0442\u0430\u0431\u043b\u0438\u0446\u044b.<\/p>\n<pre><code class=\"cpp\">class MainView { \/\/ ...     int id;     Worker w; public slots: void onTest(int mid, VariantVector2 ret) {     qDebug() &lt;&lt; mid;     if (id != mid) return;     foreach (VariantVector r, ret)         foreach (QVariant v, r)         qDebug() &lt;&lt; v; } public: void run() {     connect(&w,SIGNAL(signalExec(int,VariantVector2)),this,SLOT(onTest(int,VariantVector2)));     QStringList names;     VariantVector params;     names &lt;&lt; &quot;:myid&quot;;     params.push_back(3);    if (w.init());     id = Worker::exec(&w,&quot;select * from Table where not ID = :myid;&quot;,names,params);     qDebug() &lt;&lt; &quot;Finished!&quot;; } }; <\/code><\/pre>\n<p>  <\/p>\n<pre><code class=\"cpp\">Finished! QVariant(QString, &quot;id&quot;) QVariant(QString, &quot;code&quot;) QVariant(QString, &quot;prefasfk_id&quot;) QVariant(QString, &quot;creationdate&quot;) QVariant(QString, &quot;lasteditdate&quot;) QVariant(int, 1) QVariant(int, 10) QVariant(QString, &quot;&quot;) QVariant(QDateTime, QDateTime(2015-12-18 17:05:43.877 RTZ 5 (\u0437\u0438\u043c\u0430) Qt::TimeSpec(LocalTime))) QVariant(QDateTime, QDateTime(2015-12-18 17:05:43.877 RTZ 5 (\u0437\u0438\u043c\u0430) Qt::TimeSpec(LocalTime))) QVariant(int, 2) QVariant(int, 20) QVariant(QString, &quot;&quot;) QVariant(QDateTime, QDateTime(2015-12-18 17:05:45.729 RTZ 5 (\u0437\u0438\u043c\u0430) Qt::TimeSpec(LocalTime))) QVariant(QDateTime, QDateTime(2015-12-18 17:05:45.729 RTZ 5 (\u0437\u0438\u043c\u0430) Qt::TimeSpec(LocalTime))) QVariant(int, 4) QVariant(int, 40) QVariant(QString, &quot;&quot;) QVariant(QDateTime, QDateTime(2015-12-18 17:05:49.152 RTZ 5 (\u0437\u0438\u043c\u0430) Qt::TimeSpec(LocalTime))) QVariant(QDateTime, QDateTime(2015-12-18 17:05:49.152 RTZ 5 (\u0437\u0438\u043c\u0430) Qt::TimeSpec(LocalTime))) <\/code><\/pre>\n<p>  \u0412\u043e\u0442 \u0438 \u0432\u0441\u0451. \u0416\u0435\u043b\u0430\u044e\u0449\u0438\u0435 \u043c\u043e\u0433\u0443\u0442 \u0434\u043e\u0431\u0430\u0432\u0438\u0442\u044c \u043f\u043e\u0441\u0442\u0440\u043e\u0447\u043d\u0443\u044e \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0443 \u0434\u0430\u043d\u043d\u044b\u0445 \u0438\u043b\u0438, \u043a \u043f\u0440\u0438\u043c\u0435\u0440\u0443, \u0443\u0434\u043e\u0431\u043d\u044b\u0439 \u043f\u0443\u043b. \u0421\u0430\u043c\u044b\u0435 \u043e\u0442\u0447\u0430\u044f\u043d\u044b\u0435 \u043c\u043e\u0433\u0443\u0442 \u0434\u0430\u0436\u0435 \u0434\u043e\u0431\u0430\u0432\u0438\u0442\u044c \u0441\u0438\u043d\u0445\u0440\u043e\u043d\u043d\u044b\u0435 \u0437\u0430\u043f\u0440\u043e\u0441\u044b \u0431\u0435\u0437 \u044d\u0442\u0438\u0445 \u0432\u0430\u0448\u0438\u0445 \u0441\u0438\u0433\u043d\u0430\u043b\u043e\u0432 \u0438 \u0441\u043b\u043e\u0442\u043e\u0432.       <\/p>\n<div class=\"clear\"><\/div>\n<p> \u0441\u0441\u044b\u043b\u043a\u0430 \u043d\u0430 \u043e\u0440\u0438\u0433\u0438\u043d\u0430\u043b \u0441\u0442\u0430\u0442\u044c\u0438 <a href=\"http:\/\/habrahabr.ru\/post\/273647\/\"> http:\/\/habrahabr.ru\/post\/273647\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>       \u041f\u0440\u0438 \u043d\u0430\u043f\u0438\u0441\u0430\u043d\u0438\u0438 \u043c\u043d\u043e\u0433\u043e\u043f\u043e\u0442\u043e\u0447\u043d\u044b\u0445 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u043d\u0430 Qt \u043c\u043d\u043e\u0433\u0438\u0435 \u0441\u0442\u0430\u043b\u043a\u0438\u0432\u0430\u043b\u0438\u0441\u044c \u0441 \u0442\u0435\u043c, \u0447\u0442\u043e \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f QtSql \u0441\u0442\u0440\u043e\u0433\u043e \u043e\u0434\u043d\u043e\u043f\u043e\u0442\u043e\u0447\u043d\u0430\u044f. \u0427\u0442\u043e \u0445\u0443\u0436\u0435, \u0432 \u043d\u0435\u0439 \u043d\u0435\u0442 \u043d\u0438 \u0435\u0434\u0438\u043d\u043e\u0433\u043e \u043c\u0435\u0442\u043e\u0434\u0430 \u0434\u043b\u044f \u0444\u043e\u043d\u043e\u0432\u043e\u0433\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0437\u0430\u043f\u0440\u043e\u0441\u0430. \u0410 \u0435\u0441\u043b\u0438 \u0437\u0430\u043f\u0440\u043e\u0441 \u0431\u043e\u043b\u044c\u0448\u043e\u0439 \u0438\u043b\u0438 \u043f\u0440\u043e\u0441\u0442\u043e \u0434\u043e\u043b\u0433\u0438\u0439, \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u0435\u0433\u043e \u0432 \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u043c \u043f\u043e\u0442\u043e\u043a\u0435 \u043d\u0430\u043c\u0435\u0440\u0442\u0432\u043e \u043f\u043e\u0434\u0432\u0435\u0441\u0438\u0442 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441.<\/p>\n<p>  \u0427\u0442\u043e \u043d\u0435\u0440\u0432\u0438\u0440\u0443\u0435\u0442 \u0435\u0449\u0451 \u0431\u043e\u043b\u044c\u0448\u0435, \u043d\u0438\u0433\u0434\u0435 \u043d\u0435\u0442 \u0445\u043e\u0442\u044c \u0441\u043a\u043e\u043b\u044c\u043a\u043e-\u043d\u0438\u0431\u0443\u0434\u044c \u0436\u0438\u0437\u043d\u0435\u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0442\u0430\u043a\u043e\u0439, \u043a\u0430\u0437\u0430\u043b\u043e\u0441\u044c \u0431\u044b, \u043d\u0443\u0436\u043d\u043e\u0439 \u0432\u0435\u0449\u0438. \u041c\u0430\u043a\u0441\u0438\u043c\u0443\u043c, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043c\u043e\u0436\u043d\u043e \u043d\u0430\u0439\u0442\u0438 \u2014 <a href=\"http:\/\/habrahabr.ru\/post\/164377\/\">\u043f\u0443\u043b \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0439<\/a>, \u0440\u0430\u0431\u043e\u0442\u0430\u044e\u0449\u0438\u0439 \u0432\u043f\u043e\u043b\u043d\u0435 \u0441\u0438\u043d\u0445\u0440\u043e\u043d\u043d\u043e. \u0427\u0442\u043e \u0436, \u0432\u0440\u0435\u043c\u044f \u0442\u0435\u0447\u0451\u0442, \u0432\u0441\u0451 \u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f.  <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-270832","post","type-post","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/posts\/270832","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=270832"}],"version-history":[{"count":0,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/posts\/270832\/revisions"}],"wp:attachment":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=270832"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=270832"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=270832"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}