mirror of
https://github.com/yasuhirokimura/db18
synced 2026-06-08 18:29:23 +00:00
Yasuhiro KIMURA
176 lines
7.7 KiB
HTML
176 lines
7.7 KiB
HTML
<?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>Renaming the BLOB file feature to External Files</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 Installation and Build Guide" />
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<link rel="up" href="upgrade_62_toc.html" title="Chapter 9. Upgrading Berkeley DB 12.1.6.1 applications to Berkeley DB 12.1.6.2" />
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<link rel="prev" href="upgrade_slices.html" title="Database Slices" />
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<link rel="next" href="upgrade_regiondir.html" title="Configurable Region Directory" />
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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 18.1.40</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">Renaming the BLOB file feature to External Files</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_slices.html">Prev</a> </td>
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<th width="60%" align="center">Chapter 9. Upgrading Berkeley DB 12.1.6.1 applications to Berkeley DB 12.1.6.2 </th>
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<td width="20%" align="right"> <a accesskey="n" href="upgrade_regiondir.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="renaming_blobs_external"></a>Renaming the BLOB file feature to External Files</h2>
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</div>
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</div>
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</div>
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<div class="toc">
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<dl>
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<dt>
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<span class="sect2">
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<a href="renaming_blobs_external.html#idm140649572890384">Functions</a>
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</span>
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</dt>
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<dt>
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<span class="sect2">
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<a href="renaming_blobs_external.html#idm140649572879488">New Parameter Values</a>
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</span>
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</dt>
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<dt>
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<span class="sect2">
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<a href="renaming_blobs_external.html#idm140649572871264">New Statistics</a>
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</span>
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</dt>
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</dl>
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</div>
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<p>
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The BLOB file feature has been renamed to
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<span class="emphasis"><em>external files</em></span> to avoid
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confusion with the SQL datatype BLOB. The functions and flags
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associated with BLOBs have been deprecated, and new functions
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have been added to replace them. Existing applications that
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use the old functions will still work, but users are
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encouraged to use the new functions.
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</p>
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<p>
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Below is a list of the deprecated
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functions, flags, and statistics, along with the replacements.
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</p>
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<div class="sect2" 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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<h3 class="title"><a id="idm140649572890384"></a>Functions</h3>
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</div>
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</div>
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</div>
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<div class="itemizedlist">
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<ul type="disc">
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<li><code class="literal"><a href="../api_reference/C/set_blob_dir.html" class="olink">DB->set_ext_file_dir()</a></code> replaces
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<code class="literal">DB->get_blob_dir</code>.
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</li>
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<li><code class="literal"><a href="../api_reference/C/get_blob_threshold.html" class="olink">DB->get_ext_file_threshold()</a></code> replaces
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<code class="literal">DB->get_blob_threshold</code>.
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</li>
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<li><code class="literal"><a href="../api_reference/C/set_blob_dir.html" class="olink">DB->set_ext_file_dir()</a></code> replaces
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<code class="literal">DB->set_blob_dir</code>.
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</li>
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<li><code class="literal"><a href="../api_reference/C/set_blob_threshold.html" class="olink">DB->set_ext_file_threshold()</a></code> replaces
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<code class="literal">DB->set_blob_threshold</code>.
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</li>
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<li><code class="literal"><a href="../api_reference/C/envget_blob_dir.html" class="olink">DB_ENV->get_ext_file_dir()</a></code> replaces
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<code class="literal">DB_ENV->get_blob_dir</code>.
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</li>
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<li><code class="literal"><a href="../api_reference/C/envget_blob_threshold.html" class="olink">DB_ENV->get_ext_file_threshold()</a></code> replaces
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<code class="literal">DB_ENV->get_blob_threshold</code>.
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</li>
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<li><code class="literal"><a href="../api_reference/C/envset_blob_dir.html" class="olink">DB_ENV->set_ext_file_dir()</a></code> replaces
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<code class="literal">DB_ENV->set_blob_dir</code>.
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</li>
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<li><code class="literal"><a href="../api_reference/C/envset_blob_threshold.html" class="olink">DB_ENV->set_ext_file_threshold()</a></code> replaces
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<code class="literal">DB->set_blob_threshold</code>.
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</li>
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</ul>
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</div>
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</div>
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<div class="sect2" 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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<h3 class="title"><a id="idm140649572879488"></a>New Parameter Values</h3>
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</div>
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</div>
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</div>
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<div class="itemizedlist">
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<ul type="disc">
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<li><code class="literal">DB_LOG_EXT_FILE</code> replaces
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<code class="literal">DB_LOG_BLOB</code> as a
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<code class="literal">flags</code>
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parameter value for the <a href="../api_reference/C/envlog_set_config.html" class="olink">DB_ENV->log_set_config()</a> method.
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</li>
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<li><code class="literal">DB_DBT_EXT_FILE</code> replaces
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<code class="literal">DB_DBT_BLOB</code> as a
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<code class="literal">flags</code>
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parameter value for the <a href="../api_reference/C/dbt.html" class="olink">DBT</a> method.
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</li>
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</ul>
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</div>
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</div>
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<div class="sect2" 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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<h3 class="title"><a id="idm140649572871264"></a>New Statistics</h3>
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</div>
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</div>
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</div>
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<p>
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<a href="../api_reference/C/dbstat.html" class="olink">DB->stat()</a> now includes the following fields to replace
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the old fields in the returned statistical structure.
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</p>
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<div class="itemizedlist">
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<ul type="disc">
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<li><code class="literal">hash_ext_files</code> replaces
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<code class="literal">hash_nblobs</code></li>
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<li><code class="literal">heap_ext_files</code> replaces
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<code class="literal">heap_nblobs</code></li>
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<li><code class="literal">bt_ext_files</code> replaces
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<code class="literal">bt_nblobs</code></li>
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</ul>
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</div>
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</div>
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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_slices.html">Prev</a> </td>
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<td width="20%" align="center">
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<a accesskey="u" href="upgrade_62_toc.html">Up</a>
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</td>
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<td width="40%" align="right"> <a accesskey="n" href="upgrade_regiondir.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">Database Slices </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"> Configurable Region Directory</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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