<?xml version="1.0" encoding="UTF-8" standalone="no"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <title>Release 3.0: additional C++ changes</title> <link rel="stylesheet" href="gettingStarted.css" type="text/css" /> <meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /> <link rel="start" href="index.html" title="Berkeley DB Programmer's Reference Guide" /> <link rel="up" href="upgrade_3_0_toc.html" title="Chapter 33. Upgrading Berkeley DB 2.X applications to Berkeley DB 3.0" /> <link rel="prev" href="upgrade_3_0_db_cxx.html" title="Release 3.0: the Db class for C++ and Java" /> <link rel="next" href="upgrade_3_0_java.html" title="Release 3.0: additional Java changes" /> </head> <body> <div class="navheader"> <table width="100%" summary="Navigation header"> <tr> <th colspan="3" align="center">Release 3.0: additional C++ changes</th> </tr> <tr> <td width="20%" align="left"><a accesskey="p" href="upgrade_3_0_db_cxx.html">Prev</a> </td> <th width="60%" align="center">Chapter 33. Upgrading Berkeley DB 2.X applications to Berkeley DB 3.0</th> <td width="20%" align="right"> <a accesskey="n" href="upgrade_3_0_java.html">Next</a></td> </tr> </table> <hr /> </div> <div class="sect1" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h2 class="title" style="clear: both"><a id="upgrade_3_0_cxx"></a>Release 3.0: additional C++ changes</h2> </div> </div> </div> <p>The Db::set_error_model method is gone. The way to change the C++ API to return errors rather than throw exceptions is via a flag on the DbEnv or Db constructor. For example:</p> <pre class="programlisting">int dberr; DbEnv *dbenv = new DbEnv(DB_CXX_NO_EXCEPTIONS);</pre> <p>creates an environment that will never throw exceptions, and method returns should be checked instead.</p> <p>There are a number of smaller changes to the API that bring the C, C++ and Java APIs much closer in terms of functionality and usage. Please refer to the pages for upgrading C applications for further details.</p> </div> <div class="navfooter"> <hr /> <table width="100%" summary="Navigation footer"> <tr> <td width="40%" align="left"><a accesskey="p" href="upgrade_3_0_db_cxx.html">Prev</a> </td> <td width="20%" align="center"> <a accesskey="u" href="upgrade_3_0_toc.html">Up</a> </td> <td width="40%" align="right"> <a accesskey="n" href="upgrade_3_0_java.html">Next</a></td> </tr> <tr> <td width="40%" align="left" valign="top">Release 3.0: the Db class for C++ and Java </td> <td width="20%" align="center"> <a accesskey="h" href="index.html">Home</a> </td> <td width="40%" align="right" valign="top"> Release 3.0: additional Java changes</td> </tr> </table> </div> </body> </html>