<?xml version="1.0" encoding="UTF-8" standalone="no"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <title>Chapter 7. Db_set</title> <link rel="stylesheet" href="apiReference.css" type="text/css" /> <meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /> <link rel="start" href="index.html" title="Berkeley DB C++ Standard Template Library API Reference" /> <link rel="up" href="index.html" title="Berkeley DB C++ Standard Template Library API Reference" /> <link rel="prev" href="stldb_multimapoperator_ueq.html" title="operator!=" /> <link rel="next" href="stldb_setdstr_db_set.html" title="~db_set" /> </head> <body> <div class="navheader"> <table width="100%" summary="Navigation header"> <tr> <th colspan="3" align="center">Chapter 7. Db_set </th> </tr> <tr> <td width="20%" align="left"><a accesskey="p" href="stldb_multimapoperator_ueq.html">Prev</a> </td> <th width="60%" align="center"> </th> <td width="20%" align="right"> <a accesskey="n" href="stldb_setdstr_db_set.html">Next</a></td> </tr> </table> <hr /> </div> <div class="chapter" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h2 class="title"><a id="db_set"></a>Chapter 7. Db_set </h2> </div> </div> </div> <p>This class is the combination of std::set and hash_set. </p> <p>By setting database handles of DB_BTREE or DB_HASH type, you will be using the equivalent of std::set or hash_set. 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 same as that of <a class="link" href="db_map.html" title="Chapter 5. Db_map">db_map</a> . </p> <h4><a id="id1554850"></a> See Also </h4> <p> </p> <p><a class="link" href="db_map.html" title="Chapter 5. Db_map">db_map</a> <a class="link" href="db_container.html" title="Chapter 3. Db_container">db_container</a> </p> <div class="sect2" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h3 class="title"><a id="id1555426"></a> Class Template Parameters</h3> </div> </div> </div> <div class="sect3" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h4 class="title"><a id="id1555469"></a> kdt</h4> </div> </div> </div> <p>The key data type. </p> </div> <div class="sect3" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h4 class="title"><a id="id1555470"></a> value_type_sub</h4> </div> </div> </div> <p>If kdt is a class/struct type, do not specify anything in this parameter; Otherwise specify ElementHolder<kdt>. </p> </div> </div> <h4><a id="id1555442"></a> Public Members </h4> <div class="informaltable"> <table border="1" width="80%"> <colgroup> <col /> <col /> </colgroup> <thead> <tr> <th>Member</th> <th>Description</th> </tr> </thead> <tbody> <tr> <td> <a class="xref" href="db_set.html#stldb_setdb_set" title="db_set"> db_set </a> </td> <td> <p>Create a std::set/hash_set equivalent associative container. </p> </td> </tr> <tr> <td> <a class="xref" href="stldb_setdstr_db_set.html" title="~db_set"> ~db_set </a> </td> <td> </td> </tr> <tr> <td> <a class="xref" href="stldb_setinsert.html" title="insert"> insert </a> </td> <td> <p>Insert a single key/data pair if the key is not in the container. </p> </td> </tr> <tr> <td> <a class="xref" href="stldb_setoperator_assign.html" title="operator="> operator= </a> </td> <td> <p>Container content assignment operator. </p> </td> </tr> <tr> <td> <a class="xref" href="stldb_setvalue_comp.html" title="value_comp"> value_comp </a> </td> <td> <p>Get value comparison functor. </p> </td> </tr> <tr> <td> <a class="xref" href="stldb_setswap.html" title="swap"> swap </a> </td> <td> <p>Swap content with another container. </p> </td> </tr> <tr> <td> <a class="xref" href="stldb_setoperator_eq.html" title="operator=="> operator== </a> </td> <td> <p>Set content equality comparison operator. </p> </td> </tr> <tr> <td> <a class="xref" href="stldb_setoperator_ueq.html" title="operator!="> operator!= </a> </td> <td> <p>Inequality comparison operator. </p> </td> </tr> </tbody> </table> </div> <h4><a id="id1555694"></a> Group</h4> <p> <a class="xref" href="dbstl_containers.html" title="Chapter 2. Dbstl Container Classes"> Dbstl Container Classes </a> </p> <p> </p> <div class="sect1" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h2 class="title" style="clear: both"><a id="stldb_setdb_set"></a> db_set </h2> </div> </div> </div> <div class="sect2" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h3 class="title"><a id="func_details"></a> Function Details</h3> </div> </div> </div> <pre class="programlisting"> db_set(Db *dbp=NULL, DbEnv *envp=NULL) </pre> <div class="sect3" lang="en" xml:lang="en"> <div class="titlepage"></div> <p>Create a std::set/hash_set equivalent associative container. </p> <p>See the handle requirement in class details to pass correct database/environment handles. </p> </div> <div class="sect3" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h4 class="title"><a id="id1555652"></a> Parameters</h4> </div> </div> </div> <div class="sect4" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h5 class="title"><a id="id1555713"></a> dbp </h5> </div> </div> </div> <p>The database handle. </p> </div> <div class="sect4" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h5 class="title"><a id="id1555662"></a> envp </h5> </div> </div> </div> <p>The database environment handle. </p> </div> </div> <div class="sect3" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h4 class="title"><a id="id1555007"></a> See Also</h4> </div> </div> </div> <p> </p> <p><a class="link" href="db_map.html#stldb_mapdb_map" title="db_map">db_map(Db*, DbEnv*)</a> <a class="link" href="stldb_containerdb_container.html" title="db_container">db_container(Db*, DbEnv*)</a> </p> <p> </p> </div> <pre class="programlisting"> db_set(Db *dbp, DbEnv *envp, InputIterator first, InputIterator last) </pre> <div class="sect3" lang="en" xml:lang="en"> <div class="titlepage"></div> <p>Iteration constructor. </p> <p>Iterates between first and last, copying each of the elements in the range into this container. Create a std::set/hash_set 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> </div> <div class="sect3" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h4 class="title"><a id="id1555627"></a> Parameters</h4> </div> </div> </div> <div class="sect4" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h5 class="title"><a id="id1555493"></a> dbp </h5> </div> </div> </div> <p>The database handle. </p> </div> <div class="sect4" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h5 class="title"><a id="id1555734"></a> envp </h5> </div> </div> </div> <p>The database environment handle. </p> </div> <div class="sect4" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h5 class="title"><a id="id1555664"></a> last </h5> </div> </div> </div> <p>The open boundary of the range. </p> </div> <div class="sect4" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h5 class="title"><a id="id1556004"></a> first </h5> </div> </div> </div> <p>The closed boundary of the range. </p> </div> </div> <div class="sect3" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h4 class="title"><a id="id1555738"></a> See Also</h4> </div> </div> </div> <p> </p> <p><a class="link" href="db_map.html#stldb_mapdb_map" title="db_map">db_map(Db*, DbEnv*, InputIterator, InputIterator)</a> </p> <p> </p> </div> <pre class="programlisting"> db_set(const self &x) </pre> <div class="sect3" lang="en" xml:lang="en"> <div class="titlepage"></div> <p>Copy constructor. </p> <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> </div> <div class="sect3" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h4 class="title"><a id="id1555779"></a> Parameters</h4> </div> </div> </div> <div class="sect4" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h5 class="title"><a id="id1555918"></a> x </h5> </div> </div> </div> <p>The source container to initialize this container. </p> </div> </div> <div class="sect3" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h4 class="title"><a id="id1555685"></a> See Also</h4> </div> </div> </div> <p> </p> <p><a class="link" href="db_map.html#stldb_mapdb_map" title="db_map">db_map(const db_map&)</a> <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="id1555111"></a> Class</h3> </div> </div> </div> <p> <a class="link" href="db_set.html" title="Chapter 7. Db_set"> db_set</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_multimapoperator_ueq.html">Prev</a> </td> <td width="20%" align="center"> </td> <td width="40%" align="right"> <a accesskey="n" href="stldb_setdstr_db_set.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_set </td> </tr> </table> </div> </body> </html>