diff options
Diffstat (limited to 'src/sql/doc/snippets/code/doc_src_sql-driver.cpp')
| -rw-r--r-- | src/sql/doc/snippets/code/doc_src_sql-driver.cpp | 149 |
1 files changed, 50 insertions, 99 deletions
diff --git a/src/sql/doc/snippets/code/doc_src_sql-driver.cpp b/src/sql/doc/snippets/code/doc_src_sql-driver.cpp index 54576733bf..efcb45c98e 100644 --- a/src/sql/doc/snippets/code/doc_src_sql-driver.cpp +++ b/src/sql/doc/snippets/code/doc_src_sql-driver.cpp @@ -1,141 +1,92 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the documentation of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, you may use this file under the terms of the BSD license -** as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of The Qt Company Ltd nor the names of its -** contributors may be used to endorse or promote products derived -** from this software without specific prior written permission. -** -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause +#include <QSqlDatabase> +#include <QSqlQuery> +#include <QSqlDriver> +#include <QSqlResult> +#include <QVariant> +#include <QDebug> + +void testProc() +{ //! [2] QSqlQuery q; q.exec("call qtestproc (@outval1, @outval2)"); q.exec("select @outval1, @outval2"); -q.next(); -qDebug() << q.value(0) << q.value(1); // outputs "42" and "43" +if (q.next()) + qDebug() << q.value(0) << q.value(1); // outputs "42" and "43" //! [2] +} - +void callStoredProc() +{ //! [10] // STORED_PROC uses the return statement or returns multiple result sets QSqlQuery query; query.setForwardOnly(true); query.exec("{call STORED_PROC}"); //! [10] +} - +void setHost() +{ //! [24] +QSqlDatabase db; db.setHostName("MyServer"); db.setDatabaseName("C:\\test.gdb"); //! [24] +} - -//! [25] -// connect to database using the Latin-1 character set -db.setConnectOptions("ISC_DPB_LC_CTYPE=Latin1"); -db.open(); -//! [25] - - +void exProc() +{ //! [26] QSqlQuery q; q.exec("execute procedure my_procedure"); -q.next(); -qDebug() << q.value(0); // outputs the first RETURN/OUT value +if (q.next()) + qDebug() << q.value(0); // outputs the first RETURN/OUT value //! [26] +qDebug( \ +"QSqlDatabase: QMYSQL driver not loaded \ +QSqlDatabase: available drivers: QMYSQL" \ +); -//! [31] -QSqlDatabase: QMYSQL driver not loaded -QSqlDatabase: available drivers: QMYSQL -//! [31] - - +/* Commented because the following line is not compilable //! [34] column.contains(QRegularExpression("pattern")); //! [34] - - -//! [36] -QSqlQuery query(db); -query.setForwardOnly(true); -query.exec("SELECT * FROM table"); -while (query.next()) { - // Handle changes in every iteration of the loop - QVariant v = query.result()->handle(); - if (qstrcmp(v.typeName(), "PGresult*") == 0) { - PGresult *handle = *static_cast<PGresult **>(v.data()); - if (handle) { - // Do something... - } - } +*/ } -//! [36] + +void updTable2() +{ +QSqlDatabase db; //! [37] int value; -QSqlQuery query1(db); +QSqlQuery query1; query1.setForwardOnly(true); query1.exec("select * FROM table1"); while (query1.next()) { value = query1.value(0).toInt(); if (value == 1) { - QSqlQuery query2(db); + QSqlQuery query2; query2.exec("update table2 set col=2"); // WRONG: This will discard all results of } // query1, and cause the loop to quit } //! [37] +} - -//! [39] -QSqlDatabase db = QSqlDatabase::addDatabase("QODBC3"); -QString connectString = QStringLiteral( - "DRIVER=/path/to/installation/libodbcHDB.so;" - "SERVERNODE=hostname:port;" - "UID=USER;" - "PWD=PASSWORD;" - "SCROLLABLERESULT=true"); -db.setDatabaseName(connectString); -//! [39] +void callOutProc() +{ +//! [40] + QSqlDatabase db; + QSqlQuery query; + int i1 = 10, i2 = 0; + query.prepare("call qtestproc(?, ?)"); + query.bindValue(0, i1, QSql::InOut); + query.bindValue(1, i2, QSql::Out); + query.exec(); +//! [40] +} |