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138 lines
6.2 KiB
138 lines
6.2 KiB
14 years ago
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/doc/sql.doc:67 -->
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<title>sql/overview/subclass5/main.cpp Example File</title>
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<style type="text/css"><!--
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fn { margin-left: 1cm; text-indent: -1cm; }
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a:visited { color: #672967; text-decoration: none }
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body { background: #ffffff; color: black; }
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<tr bgcolor="#E5E5E5">
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<td valign=center>
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<a href="index.html">
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<font color="#004faf">Home</font></a>
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<font color="#004faf">All Classes</font></a>
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</td>
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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>sql/overview/subclass5/main.cpp Example File</h1>
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<pre>/****************************************************************************
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** $Id: qt/main.cpp 3.3.8 edited Jan 11 14:37 $
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**
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** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
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**
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** This file is part of an example program for Qt. This example
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** program may be used, distributed and modified without limitation.
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**
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*****************************************************************************/
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#include "main.h"
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#include <<a href="qdatatable-h.html">qdatatable.h</a>>
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<a name="f25"></a>InvoiceItemCursor::InvoiceItemCursor() :
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<a href="qsqlcursor.html">QSqlCursor</a>( "invoiceitem" )
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{
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<a href="qsqlfieldinfo.html">QSqlFieldInfo</a> productName( "productname", QVariant::String );
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<a href="qsqlcursor.html#append">append</a>( productName );
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<a href="qsqlcursor.html#setCalculated">setCalculated</a>( productName.<a href="qsqlfieldinfo.html#name">name</a>(), TRUE );
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<a href="qsqlfieldinfo.html">QSqlFieldInfo</a> productPrice( "price", QVariant::Double );
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<a href="qsqlcursor.html#append">append</a>( productPrice );
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<a href="qsqlcursor.html#setCalculated">setCalculated</a>( productPrice.<a href="qsqlfieldinfo.html#name">name</a>(), TRUE );
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<a href="qsqlfieldinfo.html">QSqlFieldInfo</a> productCost( "cost", QVariant::Double );
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<a href="qsqlcursor.html#append">append</a>( productCost );
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<a href="qsqlcursor.html#setCalculated">setCalculated</a>( productCost.<a href="qsqlfieldinfo.html#name">name</a>(), TRUE );
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}
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QVariant InvoiceItemCursor::<a href="qsqlcursor.html#calculateField">calculateField</a>( const <a href="qstring.html">QString</a> & name )
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{
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if ( name == "productname" ) {
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<a href="qsqlquery.html">QSqlQuery</a> query( "SELECT name FROM prices WHERE id=" +
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<a href="qsqlrecord.html#field">field</a>( "pricesid" )->value().toString() );
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if ( query.<a href="qsqlquery.html#next">next</a>() )
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return query.<a href="qsqlquery.html#value">value</a>( 0 );
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}
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else if ( name == "price" ) {
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<a href="qsqlquery.html">QSqlQuery</a> query( "SELECT price FROM prices WHERE id=" +
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<a href="qsqlrecord.html#field">field</a>( "pricesid" )->value().toString() );
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if ( query.<a href="qsqlquery.html#next">next</a>() )
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return query.<a href="qsqlquery.html#value">value</a>( 0 );
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}
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else if ( name == "cost" ) {
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<a href="qsqlquery.html">QSqlQuery</a> query( "SELECT price FROM prices WHERE id=" +
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<a href="qsqlrecord.html#field">field</a>( "pricesid" )->value().toString() );
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if ( query.<a href="qsqlquery.html#next">next</a>() )
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return QVariant( query.<a href="qsqlquery.html#value">value</a>( 0 ).toDouble() *
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<a href="qsqlquery.html#value">value</a>( "quantity").toDouble() );
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}
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return QVariant( QString::null );
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}
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QSqlRecord *InvoiceItemCursor::<a href="qsqlcursor.html#primeInsert">primeInsert</a>()
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{
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<a href="qsqlrecord.html">QSqlRecord</a> *buffer = <a href="qsqlcursor.html#editBuffer">editBuffer</a>();
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<a href="qsqlquery.html">QSqlQuery</a> query( "SELECT NEXTVAL( 'invoiceitem_seq' )" );
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if ( query.<a href="qsqlquery.html#next">next</a>() )
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buffer-><a href="qsqlrecord.html#setValue">setValue</a>( "id", query.<a href="qsqlquery.html#value">value</a>( 0 ) );
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buffer-><a href="qsqlrecord.html#setValue">setValue</a>( "paiddate", QDate::currentDate() );
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buffer-><a href="qsqlrecord.html#setValue">setValue</a>( "quantity", 1 );
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return buffer;
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}
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int main( int argc, char *argv[] )
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{
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<a href="qapplication.html">QApplication</a> app( argc, argv );
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if ( createConnections() ) {
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InvoiceItemCursor invoiceItemCursor;
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<a href="qdatatable.html">QDataTable</a> *invoiceItemTable = new <a href="qdatatable.html">QDataTable</a>( &invoiceItemCursor );
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app.<a href="qapplication.html#setMainWidget">setMainWidget</a>( invoiceItemTable );
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invoiceItemTable-><a href="qdatatable.html#addColumn">addColumn</a>( "productname", "Product" );
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invoiceItemTable-><a href="qdatatable.html#addColumn">addColumn</a>( "price", "Price" );
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invoiceItemTable-><a href="qdatatable.html#addColumn">addColumn</a>( "quantity", "Quantity" );
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invoiceItemTable-><a href="qdatatable.html#addColumn">addColumn</a>( "cost", "Cost" );
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invoiceItemTable-><a href="qdatatable.html#addColumn">addColumn</a>( "paiddate", "Paid" );
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invoiceItemTable-><a href="qdatatable.html#refresh">refresh</a>();
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invoiceItemTable-><a href="qwidget.html#show">show</a>();
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return app.<a href="qapplication.html#exec">exec</a>();
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}
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return 1;
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}
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</pre><!-- eof -->
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<p><address><hr><div align=center>
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<table width=100% cellspacing=0 border=0><tr>
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<td>Copyright © 2007
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<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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<td align=right><div align=right>Qt 3.3.8</div>
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</table></div></address></body>
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</html>
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