<!--$Id: cxx.so,v 1.3 2005/12/01 03:18:53 bostic Exp $--> <!--Copyright (c) 1997,2008 Oracle. All rights reserved.--> <!--See the file LICENSE for redistribution information.--> <html> <head> <title>Berkeley DB Reference Guide: Release 4.0: C++ ostream objects</title> <meta name="description" content="Berkeley DB: An embedded database programmatic toolkit."> <meta name="keywords" content="embedded,database,programmatic,toolkit,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,Java,C,C++"> </head> <body bgcolor=white> <table width="100%"><tr valign=top> <td><b><dl><dt>Berkeley DB Reference Guide:<dd>Upgrading Berkeley DB Applications</dl></b></td> <td align=right><a href="../upgrade.4.0/java.html"><img src="../../images/prev.gif" alt="Prev"></a><a href="../toc.html"><img src="../../images/ref.gif" alt="Ref"></a><a href="../upgrade.4.0/asr.html"><img src="../../images/next.gif" alt="Next"></a> </td></tr></table> <p align=center><b>Release 4.0: C++ ostream objects</b></p> <p>In the 4.0 release, the Berkeley DB C++ API has been changed to use the ISO standard C++ API in preference to the older, less portable interfaces, where available. This means the Berkeley DB methods that used to take an ostream object as a parameter now expect a std::ostream. Specifically, the following methods have changed:</p> <blockquote><pre>DbEnv::set_error_stream Db::set_error_stream Db::verify</pre></blockquote> <p>On many platforms, the old and the new C++ styles are interchangeable; on some platforms (notably Windows systems), they are incompatible. If your code uses these methods and you have trouble with the 4.0 release, you should update code that looks like this:</p> <blockquote><pre>#include <iostream.h> #include <db_cxx.h> <p> void foo(Db db) { db.set_error_stream(&cerr); }</pre></blockquote> <p>to look like this:</p> <blockquote><pre>#include <iostream> #include <db_cxx.h> <p> using std::cerr; <p> void foo(Db db) { db.set_error_stream(&cerr); }</pre></blockquote> <table width="100%"><tr><td><br></td><td align=right><a href="../upgrade.4.0/java.html"><img src="../../images/prev.gif" alt="Prev"></a><a href="../toc.html"><img src="../../images/ref.gif" alt="Ref"></a><a href="../upgrade.4.0/asr.html"><img src="../../images/next.gif" alt="Next"></a> </td></tr></table> <p><font size=1>Copyright (c) 1996,2008 Oracle. All rights reserved.</font> </body> </html>