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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>TQSqlIndex Class Reference<br><small>[<a href="sql.html">sql module</a>]</small></h1>
<p>The TQSqlIndex class provides functions to manipulate and
describe TQSqlCursor and TQSqlDatabase indexes.
<a href="#details">More...</a>
<p><tt>#include <<a href="qsqlindex-h.html">ntqsqlindex.h</a>></tt>
<p>Inherits <a href="ntqsqlrecord.html">TQSqlRecord</a>.
<p><a href="qsqlindex-members.html">List of all member functions.</a>
<h2>Public Members</h2>
<ul>
<li class=fn><a href="#TQSqlIndex"><b>TQSqlIndex</b></a> ( const TQString & cursorname = TQString::null, const TQString & name = TQString::null )</li>
<li class=fn><a href="#TQSqlIndex-2"><b>TQSqlIndex</b></a> ( const TQSqlIndex & other )</li>
<li class=fn><a href="#~TQSqlIndex"><b>~TQSqlIndex</b></a> ()</li>
<li class=fn>TQSqlIndex & <a href="#operator-eq"><b>operator=</b></a> ( const TQSqlIndex & other )</li>
<li class=fn>virtual void <a href="#setCursorName"><b>setCursorName</b></a> ( const TQString & cursorName )</li>
<li class=fn>TQString <a href="#cursorName"><b>cursorName</b></a> () const</li>
<li class=fn>virtual void <a href="#setName"><b>setName</b></a> ( const TQString & name )</li>
<li class=fn>TQString <a href="#name"><b>name</b></a> () const</li>
<li class=fn>virtual void <a href="#append"><b>append</b></a> ( const TQSqlField & field )</li>
<li class=fn>virtual void <a href="#append-2"><b>append</b></a> ( const TQSqlField & field, bool desc )</li>
<li class=fn>bool <a href="#isDescending"><b>isDescending</b></a> ( int i ) const</li>
<li class=fn>virtual void <a href="#setDescending"><b>setDescending</b></a> ( int i, bool desc )</li>
</ul>
<h2>Static Public Members</h2>
<ul>
<li class=fn>TQSqlIndex <a href="#fromStringList"><b>fromStringList</b></a> ( const TQStringList & l, const TQSqlCursor * cursor )</li>
</ul>
<hr><a name="details"></a><h2>Detailed Description</h2>
The TQSqlIndex class provides functions to manipulate and
describe <a href="ntqsqlcursor.html">TQSqlCursor</a> and <a href="ntqsqldatabase.html">TQSqlDatabase</a> indexes.
<p>
<p> This class is used to describe and manipulate TQSqlCursor and
TQSqlDatabase indexes. An index refers to a single table or view
in a database. Information about the fields that comprise the
index can be used to generate SQL statements, or to affect the
behavior of a <a href="ntqsqlcursor.html">TQSqlCursor</a> object.
<p> Normally, TQSqlIndex objects are created by <a href="ntqsqldatabase.html">TQSqlDatabase</a> or
TQSqlCursor.
<p>See also <a href="database.html">Database Classes</a>.
<hr><h2>Member Function Documentation</h2>
<h3 class=fn><a name="TQSqlIndex"></a>TQSqlIndex::TQSqlIndex ( const <a href="ntqstring.html">TQString</a> & cursorname = TQString::null, const <a href="ntqstring.html">TQString</a> & name = TQString::null )
</h3>
Constructs an empty index using the cursor name <em>cursorname</em> and
index name <em>name</em>.
<h3 class=fn><a name="TQSqlIndex-2"></a>TQSqlIndex::TQSqlIndex ( const <a href="ntqsqlindex.html">TQSqlIndex</a> & other )
</h3>
Constructs a copy of <em>other</em>.
<h3 class=fn><a name="~TQSqlIndex"></a>TQSqlIndex::~TQSqlIndex ()
</h3>
Destroys the object and frees any allocated resources.
<h3 class=fn>void <a name="append"></a>TQSqlIndex::append ( const <a href="ntqsqlfield.html">TQSqlField</a> & field )<tt> [virtual]</tt>
</h3>
Appends the field <em>field</em> to the list of indexed fields. The
field is appended with an ascending sort order.
<p>Reimplemented from <a href="ntqsqlrecord.html#append">TQSqlRecord</a>.
<h3 class=fn>void <a name="append-2"></a>TQSqlIndex::append ( const <a href="ntqsqlfield.html">TQSqlField</a> & field, bool desc )<tt> [virtual]</tt>
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Appends the field <em>field</em> to the list of indexed fields. The
field is appended with an ascending sort order, unless <em>desc</em> is
TRUE.
<h3 class=fn><a href="ntqstring.html">TQString</a> <a name="cursorName"></a>TQSqlIndex::cursorName () const
</h3>
<p> Returns the name of the cursor which the index is associated with.
<h3 class=fn><a href="ntqsqlindex.html">TQSqlIndex</a> <a name="fromStringList"></a>TQSqlIndex::fromStringList ( const <a href="ntqstringlist.html">TQStringList</a> & l, const <a href="ntqsqlcursor.html">TQSqlCursor</a> * cursor )<tt> [static]</tt>
</h3>
Returns an index based on the field descriptions in <em>l</em> and the
cursor <em>cursor</em>. The field descriptions should be in the same
format that <a href="ntqsqlrecord.html#toStringList">toStringList</a>() produces, for example, a surname field
in the people table might be in one of these forms: "surname",
"surname DESC" or "people.surname ASC".
<p> <p>See also <a href="ntqsqlrecord.html#toStringList">toStringList</a>().
<h3 class=fn>bool <a name="isDescending"></a>TQSqlIndex::isDescending ( int i ) const
</h3>
Returns TRUE if field <em>i</em> in the index is sorted in descending
order; otherwise returns FALSE.
<h3 class=fn><a href="ntqstring.html">TQString</a> <a name="name"></a>TQSqlIndex::name () const
</h3>
<p> Returns the name of the index.
<h3 class=fn><a href="ntqsqlindex.html">TQSqlIndex</a> & <a name="operator-eq"></a>TQSqlIndex::operator= ( const <a href="ntqsqlindex.html">TQSqlIndex</a> & other )
</h3>
Sets the index equal to <em>other</em>.
<h3 class=fn>void <a name="setCursorName"></a>TQSqlIndex::setCursorName ( const <a href="ntqstring.html">TQString</a> & cursorName )<tt> [virtual]</tt>
</h3>
Sets the name of the cursor that the index is associated with to
<em>cursorName</em>.
<h3 class=fn>void <a name="setDescending"></a>TQSqlIndex::setDescending ( int i, bool desc )<tt> [virtual]</tt>
</h3>
If <em>desc</em> is TRUE, field <em>i</em> is sorted in descending order.
Otherwise, field <em>i</em> is sorted in ascending order (the default).
If the field does not exist, nothing happens.
<h3 class=fn>void <a name="setName"></a>TQSqlIndex::setName ( const <a href="ntqstring.html">TQString</a> & name )<tt> [virtual]</tt>
</h3>
Sets the name of the index to <em>name</em>.
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