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| author | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2012-01-26 23:32:43 -0600 |
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| committer | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2012-01-26 23:32:43 -0600 |
| commit | ea318d1431c89e647598c510c4245c6571aa5f46 (patch) | |
| tree | 996d29b80c30d453dda86d1a23162d441628f169 /doc/html/ntqsqlresult.html | |
| parent | aaf89d4b48f69c9293feb187db26362e550b5561 (diff) | |
| download | tqt3-ea318d1431c89e647598c510c4245c6571aa5f46.tar.gz tqt3-ea318d1431c89e647598c510c4245c6571aa5f46.zip | |
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diff --git a/doc/html/ntqsqlresult.html b/doc/html/ntqsqlresult.html new file mode 100644 index 000000000..c05ad1743 --- /dev/null +++ b/doc/html/ntqsqlresult.html @@ -0,0 +1,260 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> +<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/sql/qsqlresult.cpp:54 --> +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> +<title>TQSqlResult Class</title> +<style type="text/css"><!-- +fn { margin-left: 1cm; text-indent: -1cm; } +a:link { color: #004faf; text-decoration: none } +a:visited { color: #672967; text-decoration: none } +body { background: #ffffff; color: black; } +--></style> +</head> +<body> + +<table border="0" cellpadding="0" cellspacing="0" width="100%"> +<tr bgcolor="#E5E5E5"> +<td valign=center> + <a href="index.html"> +<font color="#004faf">Home</font></a> + | <a href="classes.html"> +<font color="#004faf">All Classes</font></a> + | <a href="mainclasses.html"> +<font color="#004faf">Main Classes</font></a> + | <a href="annotated.html"> +<font color="#004faf">Annotated</font></a> + | <a href="groups.html"> +<font color="#004faf">Grouped Classes</font></a> + | <a href="functions.html"> +<font color="#004faf">Functions</font></a> +</td> +<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQSqlResult Class Reference<br><small>[<a href="sql.html">sql module</a>]</small></h1> + +<p>The TQSqlResult class provides an abstract interface for +accessing data from SQL databases. +<a href="#details">More...</a> +<p><tt>#include <<a href="qsqlresult-h.html">ntqsqlresult.h</a>></tt> +<p><a href="qsqlresult-members.html">List of all member functions.</a> +<h2>Public Members</h2> +<ul> +<li class=fn>virtual <a href="#~TQSqlResult"><b>~TQSqlResult</b></a> ()</li> +</ul> +<h2>Protected Members</h2> +<ul> +<li class=fn><a href="#TQSqlResult"><b>TQSqlResult</b></a> ( const TQSqlDriver * db )</li> +<li class=fn>int <a href="#at"><b>at</b></a> () const</li> +<li class=fn>TQString <a href="#lastQuery"><b>lastQuery</b></a> () const</li> +<li class=fn>TQSqlError <a href="#lastError"><b>lastError</b></a> () const</li> +<li class=fn>bool <a href="#isValid"><b>isValid</b></a> () const</li> +<li class=fn>bool <a href="#isActive"><b>isActive</b></a> () const</li> +<li class=fn>bool <a href="#isSelect"><b>isSelect</b></a> () const</li> +<li class=fn>bool <a href="#isForwardOnly"><b>isForwardOnly</b></a> () const</li> +<li class=fn>const TQSqlDriver * <a href="#driver"><b>driver</b></a> () const</li> +<li class=fn>virtual void <a href="#setAt"><b>setAt</b></a> ( int at )</li> +<li class=fn>virtual void <a href="#setActive"><b>setActive</b></a> ( bool a )</li> +<li class=fn>virtual void <a href="#setLastError"><b>setLastError</b></a> ( const TQSqlError & e )</li> +<li class=fn>virtual void <a href="#setQuery"><b>setQuery</b></a> ( const TQString & query )</li> +<li class=fn>virtual void <a href="#setSelect"><b>setSelect</b></a> ( bool s )</li> +<li class=fn>virtual void <a href="#setForwardOnly"><b>setForwardOnly</b></a> ( bool forward )</li> +<li class=fn>virtual TQVariant <a href="#data"><b>data</b></a> ( int i ) = 0</li> +<li class=fn>virtual bool <a href="#isNull"><b>isNull</b></a> ( int i ) = 0</li> +<li class=fn>virtual bool <a href="#reset"><b>reset</b></a> ( const TQString & query ) = 0</li> +<li class=fn>virtual bool <a href="#fetch"><b>fetch</b></a> ( int i ) = 0</li> +<li class=fn>virtual bool <a href="#fetchNext"><b>fetchNext</b></a> ()</li> +<li class=fn>virtual bool <a href="#fetchPrev"><b>fetchPrev</b></a> ()</li> +<li class=fn>virtual bool <a href="#fetchFirst"><b>fetchFirst</b></a> () = 0</li> +<li class=fn>virtual bool <a href="#fetchLast"><b>fetchLast</b></a> () = 0</li> +<li class=fn>virtual int <a href="#size"><b>size</b></a> () = 0</li> +<li class=fn>virtual int <a href="#numRowsAffected"><b>numRowsAffected</b></a> () = 0</li> +</ul> +<hr><a name="details"></a><h2>Detailed Description</h2> + + +The TQSqlResult class provides an abstract interface for +accessing data from SQL databases. +<p> + +<p> Normally you would use <a href="ntqsqlquery.html">TQSqlQuery</a> instead of TQSqlResult since TQSqlQuery +provides a generic wrapper for database-specific implementations of +TQSqlResult. +<p> <p>See also <a href="ntqsql.html">TQSql</a> and <a href="database.html">Database Classes</a>. + +<hr><h2>Member Function Documentation</h2> +<h3 class=fn><a name="TQSqlResult"></a>TQSqlResult::TQSqlResult ( const <a href="ntqsqldriver.html">TQSqlDriver</a> * db )<tt> [protected]</tt> +</h3> +Protected constructor which creates a TQSqlResult using database <em>db</em>. The object is initialized to an inactive state. + +<h3 class=fn><a name="~TQSqlResult"></a>TQSqlResult::~TQSqlResult ()<tt> [virtual]</tt> +</h3> +Destroys the object and frees any allocated resources. + +<h3 class=fn>int <a name="at"></a>TQSqlResult::at () const<tt> [protected]</tt> +</h3> +Returns the current (zero-based) position of the result. + +<h3 class=fn><a href="ntqvariant.html">TQVariant</a> <a name="data"></a>TQSqlResult::data ( int i )<tt> [pure virtual protected]</tt> +</h3> + +<p> Returns the data for field <em>i</em> (zero-based) as a <a href="ntqvariant.html">TQVariant</a>. This +function is only called if the result is in an active state and is +positioned on a valid record and <em>i</em> is non-negative. +Derived classes must reimplement this function and return the value +of field <em>i</em>, or TQVariant() if it cannot be determined. + +<h3 class=fn>const <a href="ntqsqldriver.html">TQSqlDriver</a> * <a name="driver"></a>TQSqlResult::driver () const<tt> [protected]</tt> +</h3> +Returns the driver associated with the result. + +<h3 class=fn>bool <a name="fetch"></a>TQSqlResult::fetch ( int i )<tt> [pure virtual protected]</tt> +</h3> + +<p> Positions the result to an arbitrary (zero-based) index <em>i</em>. This +function is only called if the result is in an active state. Derived +classes must reimplement this function and position the result to the +index <em>i</em>, and call <a href="#setAt">setAt</a>() with an appropriate value. Return TRUE +to indicate success, or FALSE to signify failure. + +<h3 class=fn>bool <a name="fetchFirst"></a>TQSqlResult::fetchFirst ()<tt> [pure virtual protected]</tt> +</h3> + +<p> Positions the result to the first record in the result. This +function is only called if the result is in an active state. +Derived classes must reimplement this function and position the result +to the first record, and call <a href="#setAt">setAt</a>() with an appropriate value. +Return TRUE to indicate success, or FALSE to signify failure. + +<h3 class=fn>bool <a name="fetchLast"></a>TQSqlResult::fetchLast ()<tt> [pure virtual protected]</tt> +</h3> + +<p> Positions the result to the last record in the result. This +function is only called if the result is in an active state. +Derived classes must reimplement this function and position the result +to the last record, and call <a href="#setAt">setAt</a>() with an appropriate value. +Return TRUE to indicate success, or FALSE to signify failure. + +<h3 class=fn>bool <a name="fetchNext"></a>TQSqlResult::fetchNext ()<tt> [virtual protected]</tt> +</h3> +Positions the result to the next available record in the result. +This function is only called if the result is in an active state. +The default implementation calls <a href="#fetch">fetch</a>() with the next index. +Derived classes can reimplement this function and position the result +to the next record in some other way, and call <a href="#setAt">setAt</a>() with an +appropriate value. Return TRUE to indicate success, or FALSE to +signify failure. + +<h3 class=fn>bool <a name="fetchPrev"></a>TQSqlResult::fetchPrev ()<tt> [virtual protected]</tt> +</h3> +Positions the result to the previous available record in the +result. This function is only called if the result is in an active +state. The default implementation calls <a href="#fetch">fetch</a>() with the previous +index. Derived classes can reimplement this function and position the +result to the next record in some other way, and call <a href="#setAt">setAt</a>() with +an appropriate value. Return TRUE to indicate success, or FALSE to +signify failure. + +<h3 class=fn>bool <a name="isActive"></a>TQSqlResult::isActive () const<tt> [protected]</tt> +</h3> +Returns TRUE if the result has records to be retrieved; otherwise +returns FALSE. + +<h3 class=fn>bool <a name="isForwardOnly"></a>TQSqlResult::isForwardOnly () const<tt> [protected]</tt> +</h3> +Returns TRUE if you can only scroll forward through a result set; +otherwise returns FALSE. + +<h3 class=fn>bool <a name="isNull"></a>TQSqlResult::isNull ( int i )<tt> [pure virtual protected]</tt> +</h3> + +<p> Returns TRUE if the field at position <em>i</em> is NULL; otherwise +returns FALSE. + +<h3 class=fn>bool <a name="isSelect"></a>TQSqlResult::isSelect () const<tt> [protected]</tt> +</h3> +Returns TRUE if the current result is from a SELECT statement; +otherwise returns FALSE. + +<h3 class=fn>bool <a name="isValid"></a>TQSqlResult::isValid () const<tt> [protected]</tt> +</h3> +Returns TRUE if the result is positioned on a valid record (that +is, the result is not positioned before the first or after the +last record); otherwise returns FALSE. + +<h3 class=fn><a href="ntqsqlerror.html">TQSqlError</a> <a name="lastError"></a>TQSqlResult::lastError () const<tt> [protected]</tt> +</h3> +Returns the last error associated with the result. + +<h3 class=fn><a href="ntqstring.html">TQString</a> <a name="lastQuery"></a>TQSqlResult::lastQuery () const<tt> [protected]</tt> +</h3> +Returns the current SQL query text, or <a href="ntqstring.html#TQString-null">TQString::null</a> if there is none. + +<h3 class=fn>int <a name="numRowsAffected"></a>TQSqlResult::numRowsAffected ()<tt> [pure virtual protected]</tt> +</h3> + +<p> Returns the number of rows affected by the last query executed. + +<h3 class=fn>bool <a name="reset"></a>TQSqlResult::reset ( const <a href="ntqstring.html">TQString</a> & query )<tt> [pure virtual protected]</tt> +</h3> + +<p> Sets the result to use the SQL statement <em>query</em> for subsequent +data retrieval. Derived classes must reimplement this function and +apply the <em>query</em> to the database. This function is called only +after the result is set to an inactive state and is positioned +before the first record of the new result. Derived classes should +return TRUE if the query was successful and ready to be used, +or FALSE otherwise. + +<h3 class=fn>void <a name="setActive"></a>TQSqlResult::setActive ( bool a )<tt> [virtual protected]</tt> +</h3> +Protected function provided for derived classes to set the +internal active state to the value of <em>a</em>. +<p> <p>See also <a href="#isActive">isActive</a>(). + +<h3 class=fn>void <a name="setAt"></a>TQSqlResult::setAt ( int at )<tt> [virtual protected]</tt> +</h3> +Protected function provided for derived classes to set the +internal (zero-based) result index to <em>at</em>. +<p> <p>See also <a href="#at">at</a>(). + +<h3 class=fn>void <a name="setForwardOnly"></a>TQSqlResult::setForwardOnly ( bool forward )<tt> [virtual protected]</tt> +</h3> +Sets forward only mode to <em>forward</em>. If forward is TRUE only +<a href="#fetchNext">fetchNext</a>() is allowed for navigating the results. Forward only +mode needs far less memory since results do not have to be cached. +forward only mode is off by default. +<p> <p>See also <a href="#fetchNext">fetchNext</a>(). + +<h3 class=fn>void <a name="setLastError"></a>TQSqlResult::setLastError ( const <a href="ntqsqlerror.html">TQSqlError</a> & e )<tt> [virtual protected]</tt> +</h3> +Protected function provided for derived classes to set the last +error to the value of <em>e</em>. +<p> <p>See also <a href="#lastError">lastError</a>(). + +<h3 class=fn>void <a name="setQuery"></a>TQSqlResult::setQuery ( const <a href="ntqstring.html">TQString</a> & query )<tt> [virtual protected]</tt> +</h3> +Sets the current query for the result to <em>query</em>. The result must +be <a href="#reset">reset</a>() in order to execute the query on the database. + +<h3 class=fn>void <a name="setSelect"></a>TQSqlResult::setSelect ( bool s )<tt> [virtual protected]</tt> +</h3> +Protected function provided for derived classes to indicate +whether or not the current statement is a SQL SELECT statement. +The <em>s</em> parameter should be TRUE if the statement is a SELECT +statement, or FALSE otherwise. + +<h3 class=fn>int <a name="size"></a>TQSqlResult::size ()<tt> [pure virtual protected]</tt> +</h3> + +<p> Returns the size of the result or -1 if it cannot be determined. + +<!-- eof --> +<hr><p> +This file is part of the <a href="index.html">TQt toolkit</a>. +Copyright © 1995-2007 +<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center> +<table width=100% cellspacing=0 border=0><tr> +<td>Copyright © 2007 +<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a> +<td align=right><div align=right>TQt 3.3.8</div> +</table></div></address></body> +</html> |