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88 lines
3.6 KiB
HTML
88 lines
3.6 KiB
HTML
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<title>C++ ostream objects</title>
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<link rel="stylesheet" href="gettingStarted.css" type="text/css" />
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<meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
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<link rel="start" href="index.html" title="Berkeley DB Upgrade Guide" />
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<link rel="up" href="upgrade_4_0_toc.html" title="Chapter 10. Upgrading Berkeley DB 3.3 applications to Berkeley DB 4.0" />
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<link rel="prev" href="upgrade_4_0_java.html" title="Java CLASSPATH environment variable" />
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<link rel="next" href="upgrade_4_0_asr.html" title="application-specific recovery" />
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</head>
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<body>
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<div xmlns="" class="navheader">
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<div class="libver">
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<p>Library Version 11.2.5.2</p>
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</div>
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<table width="100%" summary="Navigation header">
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<tr>
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<th colspan="3" align="center">C++ ostream objects</th>
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</tr>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href="upgrade_4_0_java.html">Prev</a> </td>
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<th width="60%" align="center">Chapter 10. Upgrading Berkeley DB 3.3 applications to Berkeley DB 4.0</th>
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<td width="20%" align="right"> <a accesskey="n" href="upgrade_4_0_asr.html">Next</a></td>
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</tr>
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</table>
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<hr />
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</div>
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<div class="sect1" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h2 class="title" style="clear: both"><a id="upgrade_4_0_cxx"></a>C++ ostream objects</h2>
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</div>
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</div>
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</div>
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<p>In the 4.0 release, the Berkeley DB C++ API has been changed to use the ISO
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standard C++ API in preference to the older, less portable interfaces,
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where available. This means the Berkeley DB methods that used to take an
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ostream object as a parameter now expect a std::ostream. Specifically,
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the following methods have changed:</p>
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<pre class="programlisting">DbEnv::set_error_stream
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Db::set_error_stream
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Db::verify</pre>
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<p>On many platforms, the old and the new C++ styles are interchangeable;
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on some platforms (notably Windows systems), they are incompatible. If
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your code uses these methods and you have trouble with the 4.0 release,
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you should update code that looks like this:</p>
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<pre class="programlisting">#include <iostream.h>
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#include <db_cxx.h>
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void foo(Db db) {
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db.set_error_stream(&cerr);
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}</pre>
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<p>to look like this:</p>
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<pre class="programlisting">#include <iostream>
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#include <db_cxx.h>
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using std::cerr;
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void foo(Db db) {
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db.set_error_stream(&cerr);
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}</pre>
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</div>
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<div class="navfooter">
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<hr />
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<table width="100%" summary="Navigation footer">
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<tr>
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<td width="40%" align="left"><a accesskey="p" href="upgrade_4_0_java.html">Prev</a> </td>
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<td width="20%" align="center">
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<a accesskey="u" href="upgrade_4_0_toc.html">Up</a>
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</td>
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<td width="40%" align="right"> <a accesskey="n" href="upgrade_4_0_asr.html">Next</a></td>
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</tr>
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<tr>
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<td width="40%" align="left" valign="top">Java CLASSPATH environment variable </td>
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<td width="20%" align="center">
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<a accesskey="h" href="index.html">Home</a>
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</td>
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<td width="40%" align="right" valign="top"> application-specific recovery</td>
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</tr>
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</table>
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</div>
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</body>
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</html>
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