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11 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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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<title>Chapter 16. Db_map_iterator</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
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<link rel="prev" href="stldb_map_base_iteratoroperator_assign.html" title="operator=" />
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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 16.
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Db_map_iterator </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_map_base_iteratoroperator_assign.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_map_iteratordstr_db_map_iterator.html">Next</a></td>
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<hr />
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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_map_iterator"></a>Chapter 16.
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Db_map_iterator </h2>
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</div>
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</div>
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</div>
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<h4><a id="id3614183"></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_map_iterator.html#stldb_map_iteratordb_map_iterator" title="db_map_iterator">db_map_iterator</a>
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</td>
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<td>
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<p>Copy constructor. </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_map_iteratordstr_db_map_iterator.html" title="~db_map_iterator">~db_map_iterator</a>
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</td>
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<td>
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<p>Destructor. </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_map_iteratoroperator_incr.html" title="operator++">operator++</a>
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</td>
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<td>
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<p>Pre-increment. </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_map_iteratoroperator_decr.html" title="operator--">operator--</a>
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</td>
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<td>
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<p>Pre-decrement. </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_map_iteratoroperator__star.html" title="operator *">operator *</a>
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</td>
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<td>
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<p>Dereference 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_map_iteratoroperator_arrow.html" title="operator->">operator-></a>
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</td>
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<td>
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<p>Arrow 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_map_iteratorrefresh.html" title="refresh">refresh</a>
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</td>
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<td>
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<p>Refresh iterator cached value. </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_map_iteratoroperator_assign.html" title="operator=">operator=</a>
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</td>
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<td>
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<p>Assignment 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="id3614486"></a>
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Group</h4>
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<p>
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<a class="xref" href="dbstl_iterators.html" title="Chapter 9. Dbstl Iterator Classes">
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Dbstl Iterator 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_map_iteratordb_map_iterator"></a>db_map_iterator</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_map_iteratordb_map_iterator_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_map_iterator(const db_map_iterator< kdt, ddt,
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value_type_sub > &vi)
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</pre>
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<p>Copy constructor. </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="id3612885"></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="id3614413"></a>vi</h5>
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</div>
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</div>
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</div>
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<p>The other iterator of the same type to initialize this. </p>
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</div>
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</div>
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<pre class="programlisting">
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db_map_iterator(const db_map_base_iterator< kdt, realddt,
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ddt > &vi)
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</pre>
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<p>Base copy constructor. </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="id3614218"></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="id3614677"></a>vi</h5>
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</div>
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</div>
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</div>
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<p>Initialize from a base class iterator. </p>
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</div>
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</div>
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<pre class="programlisting">
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db_map_iterator(db_container *powner, u_int32_t b_bulk_retrieval=0,
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bool brmw=false, bool directdbget=true,
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bool b_read_only=false)
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</pre>
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<p>Constructor. </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="id3614691"></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="id3614694"></a>b_bulk_retrieval</h5>
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</div>
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</div>
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</div>
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<p>The bulk read buffer size. 0 means bulk read disabled. </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="id3614709"></a>brmw</h5>
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</div>
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</div>
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</div>
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<p>Whether set DB_RMW flag in underlying cursor. </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="id3614714"></a>powner</h5>
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</div>
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</div>
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</div>
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<p>The container which creates this iterator. </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="id3614720"></a>directdbget</h5>
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</div>
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</div>
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</div>
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<p>Whether do direct database get rather than using key/data values cached in the iterator whenever read. </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="id3614727"></a>b_read_only</h5>
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</div>
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</div>
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</div>
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<p>Whether open a read only cursor. Only effective when using Berkeley DB Concurrent Data Store. </p>
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</div>
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</div>
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<pre class="programlisting">
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db_map_iterator()
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</pre>
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<p>Default constructor, dose not create the cursor for now. </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="id3614389"></a>Group: Constructors and destructor</h3>
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</div>
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</div>
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</div>
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<p>Do not create iterators directly using these constructors, but call <a class="link" href="stldb_mapbegin.html" title="begin">db_map::begin</a>
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or db_multimap_begin to get instances of this class.</p>
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<div class="simplesect" lang="en" xml:lang="en">
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<div class="titlepage"></div>
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<p><a class="link" href="stldb_mapbegin.html" title="begin">db_map::begin()</a>
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<a class="link" href="stldb_mapbegin.html" title="begin">db_multimap::begin()</a>
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</p>
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</div>
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<p>
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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="id3614414"></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="db_map_iterator.html" title="Chapter 16. Db_map_iterator">db_map_iterator</a>
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</p>
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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="stldb_map_base_iteratoroperator_assign.html">Prev</a> </td>
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<td width="20%" align="center"> </td>
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<td width="40%" align="right"> <a accesskey="n" href="stldb_map_iteratordstr_db_map_iterator.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">operator= </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"> ~db_map_iterator</td>
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