1<?xml version="1.0" encoding="UTF-8" standalone="no"?> 2<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 3<html xmlns="http://www.w3.org/1999/xhtml"> 4 <head> 5 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> 6 <title>Release 4.0: txn_XXX</title> 7 <link rel="stylesheet" href="gettingStarted.css" type="text/css" /> 8 <meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /> 9 <link rel="start" href="index.html" title="Berkeley DB Programmer's Reference Guide" /> 10 <link rel="up" href="upgrade_4_0_toc.html" title="Chapter��37.��Upgrading Berkeley DB 3.3 applications to Berkeley DB 4.0" /> 11 <link rel="prev" href="upgrade_4_0_mp.html" title="Release 4.0: memp_XXX" /> 12 <link rel="next" href="upgrade_4_0_env.html" title="Release 4.0: db_env_set_XXX" /> 13 </head> 14 <body> 15 <div class="navheader"> 16 <table width="100%" summary="Navigation header"> 17 <tr> 18 <th colspan="3" align="center">Release 4.0: txn_XXX</th> 19 </tr> 20 <tr> 21 <td width="20%" align="left"><a accesskey="p" href="upgrade_4_0_mp.html">Prev</a>��</td> 22 <th width="60%" align="center">Chapter��37.��Upgrading Berkeley DB 3.3 applications to Berkeley DB 4.0</th> 23 <td width="20%" align="right">��<a accesskey="n" href="upgrade_4_0_env.html">Next</a></td> 24 </tr> 25 </table> 26 <hr /> 27 </div> 28 <div class="sect1" lang="en" xml:lang="en"> 29 <div class="titlepage"> 30 <div> 31 <div> 32 <h2 class="title" style="clear: both"><a id="upgrade_4_0_txn"></a>Release 4.0: txn_XXX</h2> 33 </div> 34 </div> 35 </div> 36 <p>The C API for the Berkeley DB Transaction subsystem was reworked in the 4.0 37release as follows:</p> 38 <div class="informaltable"> 39 <table border="1" width="80%"> 40 <colgroup> 41 <col /> 42 <col /> 43 </colgroup> 44 <thead> 45 <tr> 46 <th>Historic functional interface</th> 47 <th>Berkeley DB 4.X method</th> 48 </tr> 49 </thead> 50 <tbody> 51 <tr> 52 <td>txn_abort</td> 53 <td> 54 <a href="../api_reference/C/txnabort.html" class="olink">DB_TXN->abort()</a> 55 </td> 56 </tr> 57 <tr> 58 <td>txn_begin</td> 59 <td> 60 <a href="../api_reference/C/txnbegin.html" class="olink">DB_ENV->txn_begin()</a> 61 </td> 62 </tr> 63 <tr> 64 <td>txn_checkpoint</td> 65 <td> 66 <a href="../api_reference/C/txncheckpoint.html" class="olink">DB_ENV->txn_checkpoint()</a> 67 </td> 68 </tr> 69 <tr> 70 <td>txn_commit</td> 71 <td> 72 <a href="../api_reference/C/txncommit.html" class="olink">DB_TXN->commit()</a> 73 </td> 74 </tr> 75 <tr> 76 <td>txn_discard</td> 77 <td> 78 <a href="../api_reference/C/txndiscard.html" class="olink">DB_TXN->discard()</a> 79 </td> 80 </tr> 81 <tr> 82 <td>txn_id</td> 83 <td> 84 <a href="../api_reference/C/txnid.html" class="olink">DB_TXN->id()</a> 85 </td> 86 </tr> 87 <tr> 88 <td>txn_prepare</td> 89 <td> 90 <a href="../api_reference/C/txnprepare.html" class="olink">DB_TXN->prepare()</a> 91 </td> 92 </tr> 93 <tr> 94 <td>txn_recover</td> 95 <td> 96 <a href="../api_reference/C/txnrecover.html" class="olink">DB_TXN->recover()</a> 97 </td> 98 </tr> 99 <tr> 100 <td>txn_stat</td> 101 <td> 102 <a href="../api_reference/C/txnstat.html" class="olink">DB_TXN->stat()</a> 103 </td> 104 </tr> 105 </tbody> 106 </table> 107 </div> 108 <p>Applications calling any of these functions should update their calls 109to use the enclosing <a href="../api_reference/C/env.html" class="olink">DB_ENV class</a> handle's method 110(easily done as the first argument to the existing call is the correct 111handle to use).</p> 112 <p>As a special case, since applications might potentially have many calls 113to the txn_abort, txn_begin and txn_commit functions, those functions 114continue to work unchanged in the Berkeley DB 4.0 release.</p> 115 <p>In addition, the <a href="../api_reference/C/txnstat.html" class="olink">DB_TXN->stat()</a> call has been changed in the 4.0 116release to take a flags argument. To leave their historic behavior 117unchanged, applications should add a final argument of 0 to any calls 118made to <a href="../api_reference/C/txnstat.html" class="olink">DB_TXN->stat()</a>.</p> 119 </div> 120 <div class="navfooter"> 121 <hr /> 122 <table width="100%" summary="Navigation footer"> 123 <tr> 124 <td width="40%" align="left"><a accesskey="p" href="upgrade_4_0_mp.html">Prev</a>��</td> 125 <td width="20%" align="center"> 126 <a accesskey="u" href="upgrade_4_0_toc.html">Up</a> 127 </td> 128 <td width="40%" align="right">��<a accesskey="n" href="upgrade_4_0_env.html">Next</a></td> 129 </tr> 130 <tr> 131 <td width="40%" align="left" valign="top">Release 4.0: memp_XXX��</td> 132 <td width="20%" align="center"> 133 <a accesskey="h" href="index.html">Home</a> 134 </td> 135 <td width="40%" align="right" valign="top">��Release 4.0: db_env_set_XXX</td> 136 </tr> 137 </table> 138 </div> 139 </body> 140</html> 141