mirror of
https://github.com/berkeleydb/libdb.git
synced 2024-11-17 01:26:25 +00:00
187 lines
6.9 KiB
HTML
187 lines
6.9 KiB
HTML
|
<?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 2. Transactional Application</title>
|
|||
|
|
<link rel="stylesheet" href="gettingStarted.css" type="text/css" />
|
|||
|
|
<meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
|
|||
|
|
<link rel="start" href="index.html" title="Getting Started with Replicated Berkeley DB Applications" />
|
|||
|
|
<link rel="up" href="index.html" title="Getting Started with Replicated Berkeley DB Applications" />
|
|||
|
|
<link rel="prev" href="permmessages.html" title="Permanent Message Handling" />
|
|||
|
|
<link rel="next" href="simpleprogramlisting.html" title="Program Listing" />
|
|||
|
|
</head>
|
|||
|
|
<body>
|
|||
|
|
<div xmlns="" class="navheader">
|
|||
|
|
<div class="libver">
|
|||
|
|
<p>Library Version 11.2.5.2</p>
|
|||
|
|
</div>
|
|||
|
|
<table width="100%" summary="Navigation header">
|
|||
|
|
<tr>
|
|||
|
|
<th colspan="3" align="center">Chapter 2. Transactional Application</th>
|
|||
|
|
</tr>
|
|||
|
|
<tr>
|
|||
|
|
<td width="20%" align="left"><a accesskey="p" href="permmessages.html">Prev</a> </td>
|
|||
|
|
<th width="60%" align="center"> </th>
|
|||
|
|
<td width="20%" align="right"> <a accesskey="n" href="simpleprogramlisting.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="txnapp"></a>Chapter 2. Transactional Application</h2>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
<div class="toc">
|
|||
|
|
<p>
|
|||
|
|
<b>Table of Contents</b>
|
|||
|
|
</p>
|
|||
|
|
<dl>
|
|||
|
|
<dt>
|
|||
|
|
<span class="sect1">
|
|||
|
|
<a href="txnapp.html#appoverview">Application Overview</a>
|
|||
|
|
</span>
|
|||
|
|
</dt>
|
|||
|
|
<dt>
|
|||
|
|
<span class="sect1">
|
|||
|
|
<a href="simpleprogramlisting.html">Program Listing</a>
|
|||
|
|
</span>
|
|||
|
|
</dt>
|
|||
|
|
<dd>
|
|||
|
|
<dl>
|
|||
|
|
<dt>
|
|||
|
|
<span class="sect2">
|
|||
|
|
<a href="simpleprogramlisting.html#repconfiginfo_cxx">
|
|||
|
|
<span>Class: RepConfigInfo</span>
|
|||
|
|
|
|||
|
|
</a>
|
|||
|
|
</span>
|
|||
|
|
</dt>
|
|||
|
|
<dt>
|
|||
|
|
<span class="sect2">
|
|||
|
|
<a href="simpleprogramlisting.html#repmgr_cxx">Class: excxx_repquote_gsg_simple</a>
|
|||
|
|
</span>
|
|||
|
|
</dt>
|
|||
|
|
<dt>
|
|||
|
|
<span class="sect2">
|
|||
|
|
<a href="simpleprogramlisting.html#usage_cxx">Function: usage()</a>
|
|||
|
|
</span>
|
|||
|
|
</dt>
|
|||
|
|
<dt>
|
|||
|
|
<span class="sect2">
|
|||
|
|
<a href="simpleprogramlisting.html#main_cxx">Function: main()</a>
|
|||
|
|
</span>
|
|||
|
|
</dt>
|
|||
|
|
<dt>
|
|||
|
|
<span class="sect2">
|
|||
|
|
<a href="simpleprogramlisting.html#repmgr_init_cxx">Method: SimpleTxn::init()</a>
|
|||
|
|
</span>
|
|||
|
|
</dt>
|
|||
|
|
<dt>
|
|||
|
|
<span class="sect2">
|
|||
|
|
<a href="simpleprogramlisting.html#doloop_cxx">Method: SimpleTxn::doloop()</a>
|
|||
|
|
</span>
|
|||
|
|
</dt>
|
|||
|
|
<dt>
|
|||
|
|
<span class="sect2">
|
|||
|
|
<a href="simpleprogramlisting.html#printstocks_c">
|
|||
|
|
|
|||
|
|
<span>Method: SimpleTxn::print_stocks()</span>
|
|||
|
|
|
|||
|
|
</a>
|
|||
|
|
</span>
|
|||
|
|
</dt>
|
|||
|
|
</dl>
|
|||
|
|
</dd>
|
|||
|
|
</dl>
|
|||
|
|
</div>
|
|||
|
|
<p>
|
|||
|
|
In this chapter, we build a simple transaction-protected DB
|
|||
|
|
application. Throughout the remainder of this book, we will add
|
|||
|
|
replication to this example. We do this to underscore the concepts
|
|||
|
|
that we are presenting in this book; the first being that you
|
|||
|
|
should start with a working transactional program and then add
|
|||
|
|
replication to it.
|
|||
|
|
</p>
|
|||
|
|
<p>
|
|||
|
|
Note that this book assumes you already know how to write a
|
|||
|
|
transaction-protected DB application, so we will not be
|
|||
|
|
covering those concepts in this book. To learn how to write a
|
|||
|
|
transaction-protected application, see the
|
|||
|
|
<em class="citetitle">Berkeley DB Getting Started with Transaction Processing</em> guide.
|
|||
|
|
</p>
|
|||
|
|
<div class="sect1" lang="en" xml:lang="en">
|
|||
|
|
<div class="titlepage">
|
|||
|
|
<div>
|
|||
|
|
<div>
|
|||
|
|
<h2 class="title" style="clear: both"><a id="appoverview"></a>Application Overview</h2>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
<p>
|
|||
|
|
Our application maintains a stock market quotes database.
|
|||
|
|
This database contains records whose key is the stock
|
|||
|
|
market symbol and whose data is the stock's price.
|
|||
|
|
</p>
|
|||
|
|
<p>
|
|||
|
|
The application operates by presenting you with a command
|
|||
|
|
line prompt. You then enter the stock symbol and its value,
|
|||
|
|
separated by a space. The application takes this
|
|||
|
|
information and writes it to the database.
|
|||
|
|
</p>
|
|||
|
|
<p>
|
|||
|
|
To see the contents of the database, simply press
|
|||
|
|
<code class="literal">return</code> at the command prompt.
|
|||
|
|
</p>
|
|||
|
|
<p>
|
|||
|
|
To quit the application, type 'quit' or 'exit' at the
|
|||
|
|
command prompt.
|
|||
|
|
</p>
|
|||
|
|
<p>
|
|||
|
|
For example, the following illustrates the application's
|
|||
|
|
usage. In it, we use entirely fictitious stock market
|
|||
|
|
symbols and price values.
|
|||
|
|
</p>
|
|||
|
|
<pre class="programlisting">> ./excxx_repquote_gsg_simple -h env_home_dir
|
|||
|
|
QUOTESERVER> stock1 88
|
|||
|
|
QUOTESERVER> stock2 .08
|
|||
|
|
QUOTESERVER>
|
|||
|
|
Symbol Price
|
|||
|
|
====== =====
|
|||
|
|
stock1 88
|
|||
|
|
|
|||
|
|
QUOTESERVER> stock1 88.9
|
|||
|
|
QUOTESERVER>
|
|||
|
|
Symbol Price
|
|||
|
|
====== =====
|
|||
|
|
stock1 88.9
|
|||
|
|
stock2 .08
|
|||
|
|
|
|||
|
|
QUOTESERVER> quit
|
|||
|
|
></pre>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
<div class="navfooter">
|
|||
|
|
<hr />
|
|||
|
|
<table width="100%" summary="Navigation footer">
|
|||
|
|
<tr>
|
|||
|
|
<td width="40%" align="left"><a accesskey="p" href="permmessages.html">Prev</a> </td>
|
|||
|
|
<td width="20%" align="center"> </td>
|
|||
|
|
<td width="40%" align="right"> <a accesskey="n" href="simpleprogramlisting.html">Next</a></td>
|
|||
|
|
</tr>
|
|||
|
|
<tr>
|
|||
|
|
<td width="40%" align="left" valign="top">Permanent Message Handling </td>
|
|||
|
|
<td width="20%" align="center">
|
|||
|
|
<a accesskey="h" href="index.html">Home</a>
|
|||
|
|
</td>
|
|||
|
|
<td width="40%" align="right" valign="top"> Program Listing</td>
|
|||
|
|
</tr>
|
|||
|
|
</table>
|
|||
|
|
</div>
|
|||
|
|
</body>
|
|||
|
|
</html>
|