<?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 10. Db_base_iterator</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="dbstl_iterators.html" title="Chapter 9. Dbstl Iterator Classes" /> <link rel="next" href="stldb_base_iteratorclose_cursor.html" title="close_cursor" /> </head> <body> <div xmlns="" class="navheader"> <div class="libver"> <p>Library Version 11.2.5.3</p> </div> <table width="100%" summary="Navigation header"> <tr> <th colspan="3" align="center">Chapter 10. Db_base_iterator </th> </tr> <tr> <td width="20%" align="left"><a accesskey="p" href="dbstl_iterators.html">Prev</a> </td> <th width="60%" align="center"> </th> <td width="20%" align="right"> <a accesskey="n" href="stldb_base_iteratorclose_cursor.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_base_iterator"></a>Chapter 10. Db_base_iterator </h2> </div> </div> </div> <h4><a id="idp50652168"></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_base_iterator.html#stldb_base_iteratorrefresh" title="refresh">refresh</a> </td> <td> <p>Read data from underlying database via its cursor, and update its cached value. </p> </td> </tr> <tr> <td> <a class="xref" href="stldb_base_iteratorclose_cursor.html" title="close_cursor">close_cursor</a> </td> <td> <p>Close its cursor. </p> </td> </tr> <tr> <td> <a class="xref" href="stldb_base_iteratorset_bulk_buffer.html" title="set_bulk_buffer"> set_bulk_buffer </a> </td> <td> <p>Call this function to modify bulk buffer size. </p> </td> </tr> <tr> <td> <a class="xref" href="stldb_base_iteratorget_bulk_bufsize.html" title="get_bulk_bufsize">get_bulk_bufsize</a> </td> <td> <p>Return current bulk buffer size. </p> </td> </tr> <tr> <td> <a class="xref" href="stldb_base_iteratordb_base_iterator.html" title="db_base_iterator"> db_base_iterator </a> </td> <td> <p>Default constructor. </p> </td> </tr> <tr> <td> <a class="xref" href="stldb_base_iteratoroperator_assign.html" title="operator=">operator=</a> </td> <td> <p>Iterator assignment operator. </p> </td> </tr> <tr> <td> <a class="xref" href="stldb_base_iteratordstr_db_base_iterator.html" title="~db_base_iterator">~db_base_iterator</a> </td> <td> <p>Destructor. </p> </td> </tr> <tr> <td> <a class="xref" href="stldb_base_iteratorget_bulk_retrieval.html" title="get_bulk_retrieval">get_bulk_retrieval</a> </td> <td> <p>Get bulk buffer size. </p> </td> </tr> <tr> <td> <a class="xref" href="stldb_base_iteratoris_rmw.html" title="is_rmw">is_rmw</a> </td> <td> <p>Get DB_RMW setting. </p> </td> </tr> <tr> <td> <a class="xref" href="stldb_base_iteratoris_directdb_get.html" title="is_directdb_get">is_directdb_get</a> </td> <td> <p>Get direct database get setting. </p> </td> </tr> </tbody> </table> </div> <h4><a id="idp50801448"></a> Group</h4> <p> <a class="xref" href="dbstl_iterators.html" title="Chapter 9. Dbstl Iterator Classes"> Dbstl Iterator 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_base_iteratorrefresh"></a>refresh</h2> </div> </div> </div> <div class="sect2" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h3 class="title"><a id="stldb_base_iteratorrefresh_details"></a>Function Details</h3> </div> </div> </div> <pre class="programlisting"> int refresh(bool from_db=true) </pre> <p>Read data from underlying database via its cursor, and update its cached value. </p> <div class="sect3" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h4 class="title"><a id="idp50816016"></a>Parameters</h4> </div> </div> </div> <div class="sect4" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h5 class="title"><a id="idp50835072"></a>from_db </h5> </div> </div> </div> <p>Whether retrieve data from database rather than using the cached data in this iterator. </p> </div> </div> <div class="sect3" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h4 class="title"><a id="idp50822880"></a>Return Value</h4> </div> </div> </div> <p>0 if succeeded. Otherwise an <a class="link" href="DbstlException.html" title="Chapter 30. DbstlException">DbstlException</a> exception will be thrown. </p> </div> </div> <div class="sect2" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> <h3 class="title"><a id="idp50823616"></a>Class</h3> </div> </div> </div> <p> <a class="link" href="db_base_iterator.html" title="Chapter 10. Db_base_iterator">db_base_iterator</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="dbstl_iterators.html">Prev</a> </td> <td width="20%" align="center"> </td> <td width="40%" align="right"> <a accesskey="n" href="stldb_base_iteratorclose_cursor.html">Next</a></td> </tr> <tr> <td width="40%" align="left" valign="top">Chapter 9. Dbstl Iterator Classes </td> <td width="20%" align="center"> <a accesskey="h" href="index.html">Home</a> </td> <td width="40%" align="right" valign="top"> close_cursor</td> </tr> </table> </div> </body> </html>