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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>dbUserFunction class Reference</title><link href="doxygen.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.2.18 --><center><a class="qindex" href="index.html">Main Page</a> <a class="qindex" href="hierarchy.html">Class Hierarchy</a> <a class="qindex" href="annotated.html">Compound List</a> <a class="qindex" href="files.html">File List</a> <a class="qindex" href="functions.html">Compound Members</a> </center><hr><h1>dbUserFunction Class Reference</h1><code>#include <<a class="el" href="query_8h-source.html">query.h</a>></code><p><a href="classdbUserFunction-members.html">List of all members.</a><table border=0 cellpadding=0 cellspacing=0><tr><td></td></tr></table><hr><a name="_details"></a><h2>Detailed Description</h2>dbUserFunction class is used to bind user defined functions to the database. This class contains list of all user functions declared by application and provides method for locating function by name and adding new user defined functions. User defined functions can have fro 0 till 3 parameters (of <code><a class="el" href="classdbUserFunctionArgument.html">dbUserFunctionArgument</a></code> type) and should return integer, boolean, real or string value. Type of the function is detected by overloaded constructors. User defined function descriptor is cerated by <code>USER_FUNC</code> macro. <p><hr>The documentation for this class was generated from the following file:<ul><li><a class="el" href="query_8h-source.html">query.h</a></ul><hr><address style="align: right;"><small>Generated on Mon Oct 23 13:23:59 2006 for FastDB by<a href="http://www.doxygen.org/index.html"><img src="doxygen.png" alt="doxygen" align="middle" border=0 width=110 height=53></a>1.2.18 </small></address></body></html>⌨️ 快捷键说明
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