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375 lines
14 KiB
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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>Chapter 8. Db_multiset</title>
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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++ Standard Template Library API Reference" />
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<link rel="up" href="index.html" title="Berkeley DB C++ Standard Template Library API Reference" />
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<link rel="prev" href="stldb_setoperator_ueq.html" title="operator!=" />
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<link rel="next" href="stldb_multisetdstr_db_multiset.html" title="~db_multiset" />
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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">Chapter 8.
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Db_multiset </th>
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</tr>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href="stldb_setoperator_ueq.html">Prev</a> </td>
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<th width="60%" align="center"> </th>
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<td width="20%" align="right"> <a accesskey="n" href="stldb_multisetdstr_db_multiset.html">Next</a></td>
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<div class="chapter" 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"><a id="db_multiset"></a>Chapter 8.
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Db_multiset </h2>
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</div>
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</div>
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</div>
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<p>This class is the combination of std::multiset and hash_multiset. </p>
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<p>By setting database handles of DB_BTREE or DB_HASH type respectively, you will be using the equivalent of std::multiset or hash_multiset respectively. This container stores the key in the key element of a key/data pair in the underlying database, but doesn't store anything in the data element. Database and environment handle requirement: The requirement to these handles is the same as that to <a class="link" href="db_multimap.html" title="Chapter 6. Db_multimap">db_multimap</a>
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. </p>
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<h4><a id="id3526472"></a>
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See Also
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</h4>
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<p> </p>
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<p><a class="link" href="db_multimap.html" title="Chapter 6. Db_multimap">db_multimap</a>
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<a class="link" href="db_map.html" title="Chapter 5. Db_map">db_map</a>
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<a class="link" href="db_container.html" title="Chapter 3. Db_container">db_container</a>
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<a class="link" href="db_set.html" title="Chapter 7. Db_set">db_set</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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<h3 class="title"><a id="id3526583"></a>
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Class Template Parameters</h3>
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<div class="sect3" lang="en" xml:lang="en">
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<div class="titlepage">
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<h4 class="title"><a id="id3526250"></a>
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kdt</h4>
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</div>
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</div>
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</div>
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<p>The key data type. </p>
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<div class="sect3" lang="en" xml:lang="en">
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<div class="titlepage">
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<h4 class="title"><a id="id3526700"></a>
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value_type_sub</h4>
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</div>
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</div>
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</div>
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<p>If kdt is a class/struct type, do not specify anything in this parameter; Otherwise specify ElementHolder<kdt>. </p>
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</div>
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</div>
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<h4><a id="id3526545"></a> Public Members </h4>
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<div class="informaltable">
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<table border="1" width="80%">
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<colgroup>
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<col />
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<col />
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</colgroup>
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<thead>
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<tr>
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<th>Member</th>
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<th>Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td>
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<a class="xref" href="db_multiset.html#stldb_multisetdb_multiset" title="db_multiset">db_multiset</a>
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</td>
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<td>
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<p>Create a std::multiset/hash_multiset equivalent associative container. </p> </td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="stldb_multisetdstr_db_multiset.html" title="~db_multiset">~db_multiset</a>
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</td>
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<td>
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</td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="stldb_multisetinsert.html" title="insert">insert</a>
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</td>
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<td>
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<p>Insert a single key if the key is not in the container. </p> </td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="stldb_multiseterase.html" title="erase">erase</a>
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</td>
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<td>
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<p>Erase elements by key. </p> </td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="stldb_multisetoperator_assign.html" title="operator=">operator=</a>
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</td>
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<td>
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<p>Container content assignment operator. </p> </td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="stldb_multisetswap.html" title="swap">swap</a>
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</td>
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<td>
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<p>Swap content with another container. </p> </td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="stldb_multisetoperator_eq.html" title="operator==">operator==</a>
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</td>
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<td>
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<p>Container content equality compare operator. </p> </td>
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</tr>
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<tr>
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<td>
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<a class="xref" href="stldb_multisetoperator_ueq.html" title="operator!=">operator!=</a>
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</td>
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<td>
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<p>Inequality comparison operator. </p> </td>
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</tr>
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</tbody>
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</table>
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</div>
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<h4><a id="id3526829"></a>
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Group</h4>
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<p>
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<a class="xref" href="dbstl_containers.html" title="Chapter 2. Dbstl Container Classes">
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Dbstl Container Classes </a>
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</p>
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<p>
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</p>
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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="stldb_multisetdb_multiset"></a>db_multiset</h2>
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</div>
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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="stldb_multisetdb_multiset_details"></a>Function Details</h3>
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</div>
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</div>
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</div>
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<pre class="programlisting">
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db_multiset(Db *dbp=NULL,
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DbEnv *envp=NULL)
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</pre>
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<p>Create a std::multiset/hash_multiset equivalent associative container. </p>
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<p>See the handle requirement in class details to pass correct database/environment handles. </p>
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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="id3526482"></a>Parameters</h4>
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</div>
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</div>
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</div>
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<div class="sect4" 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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<h5 class="title"><a id="id3526991"></a>dbp</h5>
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</div>
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</div>
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</div>
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<p>The database handle. </p>
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</div>
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<div class="sect4" lang="en" xml:lang="en">
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<div class="titlepage">
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<h5 class="title"><a id="id3527022"></a>envp</h5>
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</div>
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</div>
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</div>
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<p>The database environment handle. </p>
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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="id3526953"></a>See Also</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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</p>
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<p><a class="link" href="stldb_multimapdb_multimap.html" title="db_multimap">db_multimap(Db*, DbEnv*)</a>
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</p>
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<p>
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</p>
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</div>
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<pre class="programlisting">
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db_multiset(Db *dbp, DbEnv *envp, InputIterator first,
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InputIterator last)
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</pre>
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<p>Iteration constructor. </p>
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<p>Iterates between first and last, copying each of the elements in the range into this container. Create a std::multi/hash_multiset equivalent associative container. Insert a range of elements into the database. The range is [first, last), which contains elements that can be converted to type ddt automatically. This function supports auto-commit. See the handle requirement in class details to pass correct database/environment handles. </p>
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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="id3526640"></a>Parameters</h4>
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</div>
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</div>
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</div>
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<div class="sect4" 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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<h5 class="title"><a id="id3526644"></a>dbp</h5>
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</div>
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</div>
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</div>
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<p>The database handle. </p>
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</div>
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<div class="sect4" 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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<h5 class="title"><a id="id3527077"></a>envp</h5>
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</div>
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</div>
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</div>
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<p>The database environment handle. </p>
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</div>
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<div class="sect4" 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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<h5 class="title"><a id="id3527083"></a>last</h5>
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</div>
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</div>
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</div>
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<p>The open boundary of the range. </p>
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</div>
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<div class="sect4" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<h5 class="title"><a id="id3527088"></a>first</h5>
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</div>
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</div>
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</div>
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<p>The closed boundary of the range. </p>
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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="id3526645"></a>See Also</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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</p>
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<p><a class="link" href="stldb_multimapdb_multimap.html" title="db_multimap">db_multimap(Db*, DbEnv*, InputIterator, InputIterator)</a>
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</p>
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<p>
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</p>
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</div>
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<pre class="programlisting">
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db_multiset(const self &x)
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</pre>
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<p>Copy constructor. </p>
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<p>Create a database and insert all key/data pairs in x into this container. x's data members are not copied. This function supports auto-commit. </p>
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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="id3526994"></a>Parameters</h4>
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</div>
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</div>
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</div>
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<div class="titlepage">
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<div>
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<div>
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<h5 class="title"><a id="id3526998"></a>x</h5>
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</div>
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</div>
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</div>
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<p>The source container to initialize this container. </p>
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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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<h4 class="title"><a id="id3527012"></a>See Also</h4>
|
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</div>
|
|||
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</div>
|
|||
|
|
</div>
|
|||
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|
<p>
|
|||
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|
</p>
|
|||
|
|
<p>db_multimap(const db_multimap&) <a class="link" href="stldb_containerdb_container.html" title="db_container">db_container(const db_container&)</a>
|
|||
|
|
</p>
|
|||
|
|
<p>
|
|||
|
|
</p>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
<div class="sect2" lang="en" xml:lang="en">
|
|||
|
|
<div class="titlepage">
|
|||
|
|
<div>
|
|||
|
|
<div>
|
|||
|
|
<h3 class="title"><a id="id3526691"></a>Class</h3>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
<p>
|
|||
|
|
<a class="link" href="db_multiset.html" title="Chapter 8. Db_multiset">db_multiset</a>
|
|||
|
|
</p>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
<div class="navfooter">
|
|||
|
|
<hr />
|
|||
|
|
<table width="100%" summary="Navigation footer">
|
|||
|
|
<tr>
|
|||
|
|
<td width="40%" align="left"><a accesskey="p" href="stldb_setoperator_ueq.html">Prev</a> </td>
|
|||
|
|
<td width="20%" align="center"> </td>
|
|||
|
|
<td width="40%" align="right"> <a accesskey="n" href="stldb_multisetdstr_db_multiset.html">Next</a></td>
|
|||
|
|
</tr>
|
|||
|
|
<tr>
|
|||
|
|
<td width="40%" align="left" valign="top">operator!= </td>
|
|||
|
|
<td width="20%" align="center">
|
|||
|
|
<a accesskey="h" href="index.html">Home</a>
|
|||
|
|
</td>
|
|||
|
|
<td width="40%" align="right" valign="top"> ~db_multiset</td>
|
|||
|
|
</tr>
|
|||
|
|
</table>
|
|||
|
|
</div>
|
|||
|
|
</body>
|
|||
|
|
</html>
|