1<!--$Id: cxx.so,v 11.5 2000/03/18 21:43:20 bostic Exp $--> 2<!--Copyright (c) 1997,2008 Oracle. All rights reserved.--> 3<!--See the file LICENSE for redistribution information.--> 4<html> 5<head> 6<title>Berkeley DB Reference Guide: Release 3.0: additional C++ changes</title> 7<meta name="description" content="Berkeley DB: An embedded database programmatic toolkit."> 8<meta name="keywords" content="embedded,database,programmatic,toolkit,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,Java,C,C++"> 9</head> 10<body bgcolor=white> 11<table width="100%"><tr valign=top> 12<td><b><dl><dt>Berkeley DB Reference Guide:<dd>Upgrading Berkeley DB Applications</dl></b></td> 13<td align=right><a href="../upgrade.3.0/db_cxx.html"><img src="../../images/prev.gif" alt="Prev"></a><a href="../toc.html"><img src="../../images/ref.gif" alt="Ref"></a><a href="../upgrade.3.0/java.html"><img src="../../images/next.gif" alt="Next"></a> 14</td></tr></table> 15<p align=center><b>Release 3.0: additional C++ changes</b></p> 16<p>The Db::set_error_model method is gone. The way to change the C++ API to 17return errors rather than throw exceptions is via a flag on the DbEnv or 18Db constructor. For example:</p> 19<blockquote><pre>int dberr; 20DbEnv *dbenv = new DbEnv(DB_CXX_NO_EXCEPTIONS);</pre></blockquote> 21<p>creates an environment that will never throw exceptions, and method 22returns should be checked instead.</p> 23<p>There are a number of smaller changes to the API that bring the C, C++ 24and Java APIs much closer in terms of functionality and usage. Please 25refer to the pages for upgrading C applications for further details.</p> 26<table width="100%"><tr><td><br></td><td align=right><a href="../upgrade.3.0/db_cxx.html"><img src="../../images/prev.gif" alt="Prev"></a><a href="../toc.html"><img src="../../images/ref.gif" alt="Ref"></a><a href="../upgrade.3.0/java.html"><img src="../../images/next.gif" alt="Next"></a> 27</td></tr></table> 28<p><font size=1>Copyright (c) 1996,2008 Oracle. All rights reserved.</font> 29</body> 30</html> 31
