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Diffstat (limited to 'tqtinterface/qt4/src/sql/tqsqlselectcursor.cpp')
| -rw-r--r-- | tqtinterface/qt4/src/sql/tqsqlselectcursor.cpp | 249 |
1 files changed, 249 insertions, 0 deletions
diff --git a/tqtinterface/qt4/src/sql/tqsqlselectcursor.cpp b/tqtinterface/qt4/src/sql/tqsqlselectcursor.cpp new file mode 100644 index 0000000..77d0548 --- /dev/null +++ b/tqtinterface/qt4/src/sql/tqsqlselectcursor.cpp @@ -0,0 +1,249 @@ +/**************************************************************************** +** +** Definition of TQSqlSelectCursor class +** +** Created : 2002-11-13 +** +** Copyright (C) 2005-2008 Trolltech ASA. All rights reserved. +** +** This file is part of the sql module of the TQt GUI Toolkit. +** +** This file may be used under the terms of the GNU General +** Public License versions 2.0 or 3.0 as published by the Free +** Software Foundation and appearing in the files LICENSE.GPL2 +** and LICENSE.GPL3 included in the packaging of this file. +** Alternatively you may (at your option) use any later version +** of the GNU General Public License if such license has been +** publicly approved by Trolltech ASA (or its successors, if any) +** and the KDE Free TQt Foundation. +** +** Please review the following information to ensure GNU General +** Public Licensing requirements will be met: +** http://trolltech.com/products/qt/licenses/licensing/opensource/. +** If you are unsure which license is appropriate for your use, please +** review the following information: +** http://trolltech.com/products/qt/licenses/licensing/licensingoverview +** or contact the sales department at sales@trolltech.com. +** +** This file may be used under the terms of the Q Public License as +** defined by Trolltech ASA and appearing in the file LICENSE.TQPL +** included in the packaging of this file. Licensees holding valid TQt +** Commercial licenses may use this file in accordance with the TQt +** Commercial License Agreement provided with the Software. +** +** This file is provided "AS IS" with NO WARRANTY OF ANY KIND, +** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted +** herein. +** +**********************************************************************/ + +#include "tqsqlselectcursor.h" +#include "tqsqldriver.h" + +#ifndef TQT_NO_SQL + +class TQSqlSelectCursorPrivate +{ +public: + TQSqlSelectCursorPrivate() : populated( FALSE ) {} + TQString query; + bool populated : 1; +}; + +/*! + \class TQSqlSelectCursor tqsqlselectcursor.h + \brief The TQSqlSelectCursor class provides browsing of general SQL + SELECT statements. + + \ingroup database + \module sql + + TQSqlSelectCursor is a convenience class that makes it possible to + display result sets from general SQL \c SELECT statements in + data-aware TQt widgets. TQSqlSelectCursor is read-only and does not + support \c INSERT, \c UPDATE or \c DELETE operations. + + Pass the query in at construction time, or use the + TQSqlSelectCursor::exec() function. + + Example: + \code + ... + TQSqlSelectCursor* cur = new TQSqlSelectCursor( "SELECT id, firstname, lastname FROM author" ); + TQDataTable* table = new TQDataTable( this ); + table->setSqlCursor( cur, TRUE, TRUE ); + table->refresh(); + ... + cur->exec( "SELECT * FROM books" ); + table->refresh(); + ... + \endcode +*/ + +/*! + Constructs a read only cursor on database \a db using the query \a query. + */ +TQSqlSelectCursor::TQSqlSelectCursor( const TQString& query, TQSqlDatabase* db ) + : TQSqlCursor( TQString::null, FALSE, db ) +{ + d = new TQSqlSelectCursorPrivate; + d->query = query; + TQSqlCursor::setMode( ReadOnly ); + if ( !query.isNull() ) + exec( query ); +} + +/*! Constructs a copy of \a other */ +TQSqlSelectCursor::TQSqlSelectCursor( const TQSqlSelectCursor& other ) + : TQSqlCursor( other ) +{ + d = new TQSqlSelectCursorPrivate; + d->query = other.d->query; + d->populated = other.d->populated; +} + +/*! Destroys the object and frees any allocated resources */ +TQSqlSelectCursor::~TQSqlSelectCursor() +{ + delete d; +} + +/*! \reimp */ +bool TQSqlSelectCursor::exec( const TQString& query ) +{ + d->query = query; + bool ret = TQSqlCursor::exec( query ); + if ( ret ) { + TQSqlCursor::clear(); + populateCursor(); + } + return ret; +} + +/*! \fn bool TQSqlSelectCursor::select() + \reimp +*/ + +/*! \reimp */ +bool TQSqlSelectCursor::select( const TQString&, const TQSqlIndex& ) +{ + bool ret = TQSqlCursor::exec( d->query ); + if ( ret && !d->populated ) + populateCursor(); + return ret; +} + +/*! \internal */ +void TQSqlSelectCursor::populateCursor() +{ + TQSqlRecordInfo inf = driver()->recordInfo( *(TQSqlQuery*)this ); + for ( TQSqlRecordInfo::const_iterator it = inf.begin(); it != inf.end(); ++it ) + TQSqlCursor::append( *it ); + d->populated = TRUE; +} + +/*! \fn TQSqlIndex TQSqlSelectCursor::primaryIndex( bool ) const + \reimp +*/ + +/*! \fn TQSqlIndex TQSqlSelectCursor::index( const TQStringList& ) const + \reimp +*/ + +/*! \fn TQSqlIndex TQSqlSelectCursor::index( const TQString& ) const + \reimp +*/ + +/*! \fn TQSqlIndex TQSqlSelectCursor::index( const char* ) const + \reimp +*/ + +/*! \fn void TQSqlSelectCursor::setPrimaryIndex( const TQSqlIndex& ) + \reimp +*/ + +/*! \fn void TQSqlSelectCursor::append( const TQSqlFieldInfo& ) + \reimp +*/ + +/*! \fn void TQSqlSelectCursor::insert( int, const TQSqlFieldInfo& ) + \reimp +*/ + +/*! \fn void TQSqlSelectCursor::remove( int ) + \reimp +*/ + +/*! \fn void TQSqlSelectCursor::clear() + \reimp +*/ + +/*! \fn void TQSqlSelectCursor::setGenerated( const TQString&, bool ) + \reimp +*/ + +/*! \fn void TQSqlSelectCursor::setGenerated( int, bool ) + \reimp +*/ + +/*! \fn TQSqlRecord* TQSqlSelectCursor::editBuffer( bool ) + \reimp +*/ + +/*! \fn TQSqlRecord* TQSqlSelectCursor::primeInsert() + \reimp +*/ + +/*! \fn TQSqlRecord* TQSqlSelectCursor::primeUpdate() + \reimp +*/ + +/*! \fn TQSqlRecord* TQSqlSelectCursor::primeDelete() + \reimp +*/ + +/*! \fn int TQSqlSelectCursor::insert( bool ) + \reimp +*/ + +/*! \fn int TQSqlSelectCursor::update( bool ) + \reimp +*/ + +/*! \fn int TQSqlSelectCursor::del( bool ) + \reimp +*/ + +/*! \fn void TQSqlSelectCursor::setMode( int ) + \reimp +*/ + +/*! \fn void TQSqlSelectCursor::setSort( const TQSqlIndex& ) + \reimp +*/ + +/*! \fn TQSqlIndex TQSqlSelectCursor::sort() const + \reimp +*/ + +/*! \fn void TQSqlSelectCursor::setFilter( const TQString& ) + \reimp +*/ + +/*! \fn TQString TQSqlSelectCursor::filter() const + \reimp +*/ + +/*! \fn void TQSqlSelectCursor::setName( const TQString&, bool ) + \reimp +*/ + +/*! \fn TQString TQSqlSelectCursor::name() const + \reimp +*/ + +/*! \fn TQString TQSqlSelectCursor::toString( const TQString&, const TQString& ) const + \reimp +*/ +#endif // TQT_NO_SQL |