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<th colspan="3" align="center">Chapter 7.
Db_set </th>
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<h2 class="title"><a id="db_set"></a>Chapter 7.
Db_set </h2>
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</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="id1554608"></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="id1554869"></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="id1554781"></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="id1554925"></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="id1554362"></a> Public Members </h4>
<div class="informaltable">
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<th>Member</th>
<th>Description</th>
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<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>
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<h4><a id="id1555581"></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="id1555521"></a>
Parameters</h4>
</div>
</div>
</div>
<div class="sect4" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h5 class="title"><a id="id1555506"></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="id1555460"></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="id1555655"></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="id1555664"></a>
Parameters</h4>
</div>
</div>
</div>
<div class="sect4" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h5 class="title"><a id="id1555424"></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="id1555799"></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="id1555697"></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="id1555396"></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="id1555110"></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="id1555961"></a>
Parameters</h4>
</div>
</div>
</div>
<div class="sect4" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h5 class="title"><a id="id1555537"></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="id1555781"></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="id1556015"></a>
Class</h3>
</div>
</div>
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<p>
<a class="link" href="db_set.html" title="Chapter 7. Db_set">
db_set</a>
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