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140 lines
5.6 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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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<title>DB_MULTIPLE_WRITE_INIT</title>
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<link rel="stylesheet" href="apiReference.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 C API Reference" />
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<link rel="up" href="dbt.html" title="Chapter 4. The DBT Handle" />
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<link rel="prev" href="DB_MULTIPLE_RECNO_NEXT.html" title="DB_MULTIPLE_RECNO_NEXT" />
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<p>Library Version 11.2.5.3</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">DB_MULTIPLE_WRITE_INIT</th>
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</tr>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href="DB_MULTIPLE_RECNO_NEXT.html">Prev</a> </td>
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<th width="60%" align="center">Chapter 4.
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The DBT Handle
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</th>
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<td width="20%" align="right"> <a accesskey="n" href="DB_MULTIPLE_WRITE_NEXT.html">Next</a></td>
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</tr>
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<hr />
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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="DB_MULTIPLE_WRITE_INIT"></a>DB_MULTIPLE_WRITE_INIT</h2>
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</div>
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</div>
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</div>
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<pre class="programlisting">#include <db.h>
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DB_MULTIPLE_WRITE_INIT(void *pointer, DBT *data); </pre>
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<p>
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Initialize a DBT containing a bulk buffer for use with the <a class="link" href="dbput.html#put_DB_MULTIPLE">DB_MULTIPLE</a> or <a class="link" href="dbput.html#put_DB_MULTIPLE_KEY">DB_MULTIPLE_KEY</a> flags to the <a class="xref" href="dbput.html" title="DB->put()">DB->put()</a> or <a class="xref" href="dbdel.html" title="DB->del()">DB->del()</a> methods.
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</p>
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<p>
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This macro initializes an opaque pointer variable used for adding
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records to a bulk buffer. Use this macro for buffers that will contain
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either a data item per record (for use with
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<a class="link" href="dbput.html#put_DB_MULTIPLE">DB_MULTIPLE</a>),
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or key/data pairs, where the key is not a record number. For record
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number keys, use <a class="link" href="DB_MULTIPLE_RECNO_WRITE_INIT.html" title="DB_MULTIPLE_RECNO_WRITE_INIT">DB_MULTIPLE_RECNO_WRITE_INIT</a>.
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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="idp59152688"></a>Parameters</h3>
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</div>
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</div>
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</div>
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<div class="sect3" 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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<h4 class="title"><a id="idp59152880"></a>pointer</h4>
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</div>
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</div>
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</div>
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<p>
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The <span class="bold"><strong>pointer</strong></span> parameter
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is an opaque pointer variable to be initialized.
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</p>
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</div>
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<div class="sect3" 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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<h4 class="title"><a id="idp59109344"></a>data</h4>
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</div>
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</div>
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</div>
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<p>
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The <span class="bold"><strong>data</strong></span> parameter is
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a <a class="link" href="dbt.html" title="Chapter 4. The DBT Handle">DBT</a> structure that
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has been initialized by the application with a buffer
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to hold multiple records.
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The <span class="bold"><strong>ulen</strong></span> field must be
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set to the size of the buffer allocated by the
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application, and must be a multiple of 4.
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</p>
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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="idp59135872"></a>Class</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 class="link" href="dbt.html" title="Chapter 4. The DBT Handle">DBT</a>
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</p>
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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="idp59150680"></a>See Also</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 class="xref" href="dbt.html#dbtlist" title="DBT and Bulk Operations">DBT and Bulk Operations</a>
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</p>
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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="DB_MULTIPLE_RECNO_NEXT.html">Prev</a> </td>
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<td width="20%" align="center">
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<a accesskey="u" href="dbt.html">Up</a>
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</td>
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<td width="40%" align="right"> <a accesskey="n" href="DB_MULTIPLE_WRITE_NEXT.html">Next</a></td>
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<tr>
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<td width="40%" align="left" valign="top">DB_MULTIPLE_RECNO_NEXT </td>
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