5635823e17
As in the past, to avoid rewriting various autotests that contain line-number information, an extra blank line has been inserted at the end of the license text to ensure that this commit does not change the total number of lines in the license header. Change-Id: I311e001373776812699d6efc045b5f742890c689 Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
248 lines
9.4 KiB
C++
248 lines
9.4 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/
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**
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** This file is part of the demonstration applications of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "browser.h"
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#include "qsqlconnectiondialog.h"
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#include <QtWidgets>
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#include <QtSql>
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Browser::Browser(QWidget *parent)
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: QWidget(parent)
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{
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setupUi(this);
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table->addAction(insertRowAction);
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table->addAction(deleteRowAction);
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if (QSqlDatabase::drivers().isEmpty())
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QMessageBox::information(this, tr("No database drivers found"),
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tr("This demo requires at least one Qt database driver. "
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"Please check the documentation how to build the "
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"Qt SQL plugins."));
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emit statusMessage(tr("Ready."));
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}
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Browser::~Browser()
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{
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}
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void Browser::exec()
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{
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QSqlQueryModel *model = new QSqlQueryModel(table);
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model->setQuery(QSqlQuery(sqlEdit->toPlainText(), connectionWidget->currentDatabase()));
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table->setModel(model);
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if (model->lastError().type() != QSqlError::NoError)
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emit statusMessage(model->lastError().text());
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else if (model->query().isSelect())
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emit statusMessage(tr("Query OK."));
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else
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emit statusMessage(tr("Query OK, number of affected rows: %1").arg(
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model->query().numRowsAffected()));
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updateActions();
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}
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QSqlError Browser::addConnection(const QString &driver, const QString &dbName, const QString &host,
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const QString &user, const QString &passwd, int port)
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{
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static int cCount = 0;
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QSqlError err;
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QSqlDatabase db = QSqlDatabase::addDatabase(driver, QString("Browser%1").arg(++cCount));
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db.setDatabaseName(dbName);
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db.setHostName(host);
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db.setPort(port);
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if (!db.open(user, passwd)) {
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err = db.lastError();
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db = QSqlDatabase();
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QSqlDatabase::removeDatabase(QString("Browser%1").arg(cCount));
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}
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connectionWidget->refresh();
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return err;
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}
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void Browser::addConnection()
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{
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QSqlConnectionDialog dialog(this);
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if (dialog.exec() != QDialog::Accepted)
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return;
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if (dialog.useInMemoryDatabase()) {
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QSqlDatabase::database("in_mem_db", false).close();
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QSqlDatabase::removeDatabase("in_mem_db");
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QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE", "in_mem_db");
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db.setDatabaseName(":memory:");
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if (!db.open())
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QMessageBox::warning(this, tr("Unable to open database"), tr("An error occurred while "
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"opening the connection: ") + db.lastError().text());
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QSqlQuery q("", db);
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q.exec("drop table Movies");
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q.exec("drop table Names");
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q.exec("create table Movies (id integer primary key, Title varchar, Director varchar, Rating number)");
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q.exec("insert into Movies values (0, 'Metropolis', 'Fritz Lang', '8.4')");
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q.exec("insert into Movies values (1, 'Nosferatu, eine Symphonie des Grauens', 'F.W. Murnau', '8.1')");
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q.exec("insert into Movies values (2, 'Bis ans Ende der Welt', 'Wim Wenders', '6.5')");
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q.exec("insert into Movies values (3, 'Hardware', 'Richard Stanley', '5.2')");
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q.exec("insert into Movies values (4, 'Mitchell', 'Andrew V. McLaglen', '2.1')");
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q.exec("create table Names (id integer primary key, Firstname varchar, Lastname varchar, City varchar)");
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q.exec("insert into Names values (0, 'Sala', 'Palmer', 'Morristown')");
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q.exec("insert into Names values (1, 'Christopher', 'Walker', 'Morristown')");
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q.exec("insert into Names values (2, 'Donald', 'Duck', 'Andeby')");
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q.exec("insert into Names values (3, 'Buck', 'Rogers', 'Paris')");
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q.exec("insert into Names values (4, 'Sherlock', 'Holmes', 'London')");
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connectionWidget->refresh();
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} else {
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QSqlError err = addConnection(dialog.driverName(), dialog.databaseName(), dialog.hostName(),
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dialog.userName(), dialog.password(), dialog.port());
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if (err.type() != QSqlError::NoError)
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QMessageBox::warning(this, tr("Unable to open database"), tr("An error occurred while "
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"opening the connection: ") + err.text());
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}
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}
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void Browser::showTable(const QString &t)
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{
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QSqlTableModel *model = new QSqlTableModel(table, connectionWidget->currentDatabase());
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model->setEditStrategy(QSqlTableModel::OnRowChange);
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model->setTable(connectionWidget->currentDatabase().driver()->escapeIdentifier(t, QSqlDriver::TableName));
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model->select();
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if (model->lastError().type() != QSqlError::NoError)
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emit statusMessage(model->lastError().text());
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table->setModel(model);
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table->setEditTriggers(QAbstractItemView::DoubleClicked|QAbstractItemView::EditKeyPressed);
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connect(table->selectionModel(), SIGNAL(currentRowChanged(QModelIndex,QModelIndex)),
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this, SLOT(currentChanged()));
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updateActions();
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}
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void Browser::showMetaData(const QString &t)
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{
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QSqlRecord rec = connectionWidget->currentDatabase().record(t);
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QStandardItemModel *model = new QStandardItemModel(table);
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model->insertRows(0, rec.count());
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model->insertColumns(0, 7);
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model->setHeaderData(0, Qt::Horizontal, "Fieldname");
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model->setHeaderData(1, Qt::Horizontal, "Type");
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model->setHeaderData(2, Qt::Horizontal, "Length");
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model->setHeaderData(3, Qt::Horizontal, "Precision");
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model->setHeaderData(4, Qt::Horizontal, "Required");
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model->setHeaderData(5, Qt::Horizontal, "AutoValue");
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model->setHeaderData(6, Qt::Horizontal, "DefaultValue");
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for (int i = 0; i < rec.count(); ++i) {
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QSqlField fld = rec.field(i);
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model->setData(model->index(i, 0), fld.name());
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model->setData(model->index(i, 1), fld.typeID() == -1
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? QString(QVariant::typeToName(fld.type()))
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: QString("%1 (%2)").arg(QVariant::typeToName(fld.type())).arg(fld.typeID()));
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model->setData(model->index(i, 2), fld.length());
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model->setData(model->index(i, 3), fld.precision());
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model->setData(model->index(i, 4), fld.requiredStatus() == -1 ? QVariant("?")
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: QVariant(bool(fld.requiredStatus())));
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model->setData(model->index(i, 5), fld.isAutoValue());
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model->setData(model->index(i, 6), fld.defaultValue());
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}
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table->setModel(model);
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table->setEditTriggers(QAbstractItemView::NoEditTriggers);
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updateActions();
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}
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void Browser::insertRow()
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{
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QSqlTableModel *model = qobject_cast<QSqlTableModel *>(table->model());
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if (!model)
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return;
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QModelIndex insertIndex = table->currentIndex();
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int row = insertIndex.row() == -1 ? 0 : insertIndex.row();
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model->insertRow(row);
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insertIndex = model->index(row, 0);
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table->setCurrentIndex(insertIndex);
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table->edit(insertIndex);
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}
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void Browser::deleteRow()
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{
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QSqlTableModel *model = qobject_cast<QSqlTableModel *>(table->model());
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if (!model)
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return;
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model->setEditStrategy(QSqlTableModel::OnManualSubmit);
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QModelIndexList currentSelection = table->selectionModel()->selectedIndexes();
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for (int i = 0; i < currentSelection.count(); ++i) {
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if (currentSelection.at(i).column() != 0)
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continue;
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model->removeRow(currentSelection.at(i).row());
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}
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model->submitAll();
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model->setEditStrategy(QSqlTableModel::OnRowChange);
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updateActions();
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}
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void Browser::updateActions()
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{
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bool enableIns = qobject_cast<QSqlTableModel *>(table->model());
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bool enableDel = enableIns && table->currentIndex().isValid();
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insertRowAction->setEnabled(enableIns);
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deleteRowAction->setEnabled(enableDel);
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}
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void Browser::about()
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{
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QMessageBox::about(this, tr("About"), tr("The SQL Browser demonstration "
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"shows how a data browser can be used to visualize the results of SQL"
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"statements on a live database"));
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}
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