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Breadcrumbs go here --> <li><a href="modules.html">Modules</a></li> <li><a href="qtsql.html">QtSql</a></li> <li>QSqlError</li> </ul> </div> <div class="toolbuttons toolblock"> <ul> <li id="smallA" class="t_button">A</li> <li id="medA" class="t_button active">A</li> <li id="bigA" class="t_button">A</li> <li id="print" class="t_button"><a href="javascript:this.print();"> <span>Print</span></a></li> </ul> </div> </div> <div class="content mainContent"> <div class="toc"> <h3><a name="toc">Contents</a></h3> <ul> <li class="level1"><a href="#public-types">Public Types</a></li> <li class="level1"><a href="#public-functions">Public Functions</a></li> <li class="level1"><a href="#details">Detailed Description</a></li> </ul> </div> <h1 class="title">QSqlError Class Reference</h1> <!-- $$$QSqlError-brief --> <p>The QSqlError class provides SQL database error information. <a href="#details">More...</a></p> <!-- @@@QSqlError --> <pre class="cpp"> <span class="preprocessor">#include <QSqlError></span></pre><ul> <li><a href="qsqlerror-members.html">List of all members, including inherited members</a></li> </ul> <a name="public-types"></a> <h2>Public Types</h2> <table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> enum </td><td class="memItemRight bottomAlign"><b><a href="qsqlerror.html#ErrorType-enum">ErrorType</a></b> { NoError, ConnectionError, StatementError, TransactionError, UnknownError }</td></tr> </table> <a name="public-functions"></a> <h2>Public Functions</h2> <table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qsqlerror.html#QSqlError">QSqlError</a></b> ( const QString & <i>driverText</i> = QString(), const QString & <i>databaseText</i> = QString(), ErrorType <i>type</i> = NoError, int <i>number</i> = -1 )</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qsqlerror.html#QSqlError-2">QSqlError</a></b> ( const QSqlError & <i>other</i> )</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qsqlerror.html#dtor.QSqlError">~QSqlError</a></b> ()</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> QString </td><td class="memItemRight bottomAlign"><b><a href="qsqlerror.html#databaseText">databaseText</a></b> () const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> QString </td><td class="memItemRight bottomAlign"><b><a href="qsqlerror.html#driverText">driverText</a></b> () const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qsqlerror.html#isValid">isValid</a></b> () const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qsqlerror.html#number">number</a></b> () const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qsqlerror.html#setDatabaseText">setDatabaseText</a></b> ( const QString & <i>databaseText</i> )</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qsqlerror.html#setDriverText">setDriverText</a></b> ( const QString & <i>driverText</i> )</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qsqlerror.html#setNumber">setNumber</a></b> ( int <i>number</i> )</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qsqlerror.html#setType">setType</a></b> ( ErrorType <i>type</i> )</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> QString </td><td class="memItemRight bottomAlign"><b><a href="qsqlerror.html#text">text</a></b> () const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> ErrorType </td><td class="memItemRight bottomAlign"><b><a href="qsqlerror.html#type">type</a></b> () const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> QSqlError & </td><td class="memItemRight bottomAlign"><b><a href="qsqlerror.html#operator-eq">operator=</a></b> ( const QSqlError & <i>other</i> )</td></tr> </table> <a name="details"></a> <!-- $$$QSqlError-description --> <div class="descr"> <h2>Detailed Description</h2> <p>The QSqlError class provides SQL database error information.</p> <p>A QSqlError object can provide database-specific error data, including the <a href="qsqlerror.html#driverText">driverText</a>() and <a href="qsqlerror.html#databaseText">databaseText</a>() messages (or both concatenated together as <a href="qsqlerror.html#text">text</a>()), and the error <a href="qsqlerror.html#number">number</a>() and <a href="qsqlerror.html#type">type</a>(). The functions all have setters so that you can create and return QSqlError objects from your own classes, for example from your own SQL drivers.</p> </div> <p><b>See also </b><a href="qsqldatabase.html#lastError">QSqlDatabase::lastError</a>() and <a href="qsqlquery.html#lastError">QSqlQuery::lastError</a>().</p> <!-- @@@QSqlError --> <div class="types"> <h2>Member Type Documentation</h2> <!-- $$$ErrorType$$$NoError$$$ConnectionError$$$StatementError$$$TransactionError$$$UnknownError$$$None$$$Connection$$$Statement$$$Transaction$$$Unknown --> <h3 class="fn"><a name="ErrorType-enum"></a>enum QSqlError::<span class="name">ErrorType</span></h3> <p>This enum type describes the context in which the error occurred, e.g., a connection error, a statement error, etc.</p> <table class="valuelist"><tr valign="top" class="odd"><th class="tblConst">Constant</th><th class="tblval">Value</th><th class="tbldscr">Description</th></tr> <tr><td class="topAlign"><tt>QSqlError::NoError</tt></td><td class="topAlign"><tt>0</tt></td><td class="topAlign">No error occurred.</td></tr> <tr><td class="topAlign"><tt>QSqlError::ConnectionError</tt></td><td class="topAlign"><tt>1</tt></td><td class="topAlign">Connection error.</td></tr> <tr><td class="topAlign"><tt>QSqlError::StatementError</tt></td><td class="topAlign"><tt>2</tt></td><td class="topAlign">SQL statement syntax error.</td></tr> <tr><td class="topAlign"><tt>QSqlError::TransactionError</tt></td><td class="topAlign"><tt>3</tt></td><td class="topAlign">Transaction failed error.</td></tr> <tr><td class="topAlign"><tt>QSqlError::UnknownError</tt></td><td class="topAlign"><tt>4</tt></td><td class="topAlign">Unknown error.</td></tr> </table> <!-- @@@ErrorType --> </div> <div class="func"> <h2>Member Function Documentation</h2> <!-- $$$QSqlError[overload1]$$$QSqlErrorconstQString&constQString&ErrorTypeint --> <h3 class="fn"><a name="QSqlError"></a>QSqlError::<span class="name">QSqlError</span> ( const <span class="type"><a href="qstring.html">QString</a></span> & <i>driverText</i> = QString(), const <span class="type"><a href="qstring.html">QString</a></span> & <i>databaseText</i> = QString(), <span class="type"><a href="qsqlerror.html#ErrorType-enum">ErrorType</a></span> <i>type</i> = NoError, <span class="type">int</span> <i>number</i> = -1 )</h3> <p>Constructs an error containing the driver error text <i>driverText</i>, the database-specific error text <i>databaseText</i>, the type <i>type</i> and the optional error number <i>number</i>.</p> <!-- @@@QSqlError --> <!-- $$$QSqlError$$$QSqlErrorconstQSqlError& --> <h3 class="fn"><a name="QSqlError-2"></a>QSqlError::<span class="name">QSqlError</span> ( const <span class="type">QSqlError</span> & <i>other</i> )</h3> <p>Creates a copy of <i>other</i>.</p> <!-- @@@QSqlError --> <!-- $$$~QSqlError[overload1]$$$~QSqlError --> <h3 class="fn"><a name="dtor.QSqlError"></a>QSqlError::<span class="name">~QSqlError</span> ()</h3> <p>Destroys the object and frees any allocated resources.</p> <!-- @@@~QSqlError --> <!-- $$$databaseText[overload1]$$$databaseText --> <h3 class="fn"><a name="databaseText"></a><span class="type"><a href="qstring.html">QString</a></span> QSqlError::<span class="name">databaseText</span> () const</h3> <p>Returns the text of the error as reported by the database. This may contain database-specific descriptions; it may be empty.</p> <p><b>See also </b><a href="qsqlerror.html#setDatabaseText">setDatabaseText</a>(), <a href="qsqlerror.html#driverText">driverText</a>(), and <a href="qsqlerror.html#text">text</a>().</p> <!-- @@@databaseText --> <!-- $$$driverText[overload1]$$$driverText --> <h3 class="fn"><a name="driverText"></a><span class="type"><a href="qstring.html">QString</a></span> QSqlError::<span class="name">driverText</span> () const</h3> <p>Returns the text of the error as reported by the driver. This may contain database-specific descriptions. It may also be empty.</p> <p><b>See also </b><a href="qsqlerror.html#setDriverText">setDriverText</a>(), <a href="qsqlerror.html#databaseText">databaseText</a>(), and <a href="qsqlerror.html#text">text</a>().</p> <!-- @@@driverText --> <!-- $$$isValid[overload1]$$$isValid --> <h3 class="fn"><a name="isValid"></a><span class="type">bool</span> QSqlError::<span class="name">isValid</span> () const</h3> <p>Returns true if an error is set, otherwise false.</p> <p>Example:</p> <pre class="cpp"> <span class="type"><a href="qsqlquerymodel.html">QSqlQueryModel</a></span> model; model<span class="operator">.</span>setQuery(<span class="string">"select * from myTable"</span>); <span class="keyword">if</span> (model<span class="operator">.</span>lastError()<span class="operator">.</span>isValid()) <a href="qtglobal.html#qDebug">qDebug</a>() <span class="operator"><</span><span class="operator"><</span> model<span class="operator">.</span>lastError();</pre> <p><b>See also </b><a href="qsqlerror.html#type">type</a>().</p> <!-- @@@isValid --> <!-- $$$number[overload1]$$$number --> <h3 class="fn"><a name="number"></a><span class="type">int</span> QSqlError::<span class="name">number</span> () const</h3> <p>Returns the database-specific error number, or -1 if it cannot be determined.</p> <p><b>See also </b><a href="qsqlerror.html#setNumber">setNumber</a>().</p> <!-- @@@number --> <!-- $$$setDatabaseText[overload1]$$$setDatabaseTextconstQString& --> <h3 class="fn"><a name="setDatabaseText"></a><span class="type">void</span> QSqlError::<span class="name">setDatabaseText</span> ( const <span class="type"><a href="qstring.html">QString</a></span> & <i>databaseText</i> )</h3> <p>Sets the database error text to the value of <i>databaseText</i>.</p> <p><b>See also </b><a href="qsqlerror.html#databaseText">databaseText</a>(), <a href="qsqlerror.html#setDriverText">setDriverText</a>(), and <a href="qsqlerror.html#text">text</a>().</p> <!-- @@@setDatabaseText --> <!-- $$$setDriverText[overload1]$$$setDriverTextconstQString& --> <h3 class="fn"><a name="setDriverText"></a><span class="type">void</span> QSqlError::<span class="name">setDriverText</span> ( const <span class="type"><a href="qstring.html">QString</a></span> & <i>driverText</i> )</h3> <p>Sets the driver error text to the value of <i>driverText</i>.</p> <p><b>See also </b><a href="qsqlerror.html#driverText">driverText</a>(), <a href="qsqlerror.html#setDatabaseText">setDatabaseText</a>(), and <a href="qsqlerror.html#text">text</a>().</p> <!-- @@@setDriverText --> <!-- $$$setNumber[overload1]$$$setNumberint --> <h3 class="fn"><a name="setNumber"></a><span class="type">void</span> QSqlError::<span class="name">setNumber</span> ( <span class="type">int</span> <i>number</i> )</h3> <p>Sets the database-specific error number to <i>number</i>.</p> <p><b>See also </b><a href="qsqlerror.html#number">number</a>().</p> <!-- @@@setNumber --> <!-- $$$setType[overload1]$$$setTypeErrorType --> <h3 class="fn"><a name="setType"></a><span class="type">void</span> QSqlError::<span class="name">setType</span> ( <span class="type"><a href="qsqlerror.html#ErrorType-enum">ErrorType</a></span> <i>type</i> )</h3> <p>Sets the error type to the value of <i>type</i>.</p> <p><b>See also </b><a href="qsqlerror.html#type">type</a>().</p> <!-- @@@setType --> <!-- $$$text[overload1]$$$text --> <h3 class="fn"><a name="text"></a><span class="type"><a href="qstring.html">QString</a></span> QSqlError::<span class="name">text</span> () const</h3> <p>This is a convenience function that returns <a href="qsqlerror.html#databaseText">databaseText</a>() and <a href="qsqlerror.html#driverText">driverText</a>() concatenated into a single string.</p> <p><b>See also </b><a href="qsqlerror.html#driverText">driverText</a>() and <a href="qsqlerror.html#databaseText">databaseText</a>().</p> <!-- @@@text --> <!-- $$$type[overload1]$$$type --> <h3 class="fn"><a name="type"></a><span class="type"><a href="qsqlerror.html#ErrorType-enum">ErrorType</a></span> QSqlError::<span class="name">type</span> () const</h3> <p>Returns the error type, or -1 if the type cannot be determined.</p> <p><b>See also </b><a href="qsqlerror.html#setType">setType</a>().</p> <!-- @@@type --> <!-- $$$operator=[overload1]$$$operator=constQSqlError& --> <h3 class="fn"><a name="operator-eq"></a><span class="type">QSqlError</span> & QSqlError::<span class="name">operator=</span> ( const <span class="type">QSqlError</span> & <i>other</i> )</h3> <p>Assigns the <i>other</i> error's values to this error.</p> <!-- @@@operator= --> </div> </div> </div> </div> <div class="ft"> <span></span> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2013 Digia Plc and/or its subsidiaries. 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