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<!-- Generated by javadoc (1.8.0_151) on Tue Oct 31 17:36:52 EDT 2017 -->
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<title>SimpleRouter (Oracle - Berkeley DB Java Edition Examples)</title>
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<div class="aboutLanguage"><b>Berkeley DB Java Edition Examples</b><br><font size=\"-1\"> version 7.5.11</font>
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<!-- ======== START OF CLASS DATA ======== -->
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<div class="header">
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<div class="subTitle">je.rep.quote</div>
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<h2 title="Class SimpleRouter" class="title">Class SimpleRouter</h2>
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<div class="contentContainer">
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<ul class="inheritance">
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<li>je.rep.quote.SimpleRouter</li>
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</ul>
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<hr>
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<br>
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<pre>public class <span class="typeNameLabel">SimpleRouter</span>
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extends java.lang.Object</pre>
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<div class="block">This example illustrates the use of a simple HA-unaware router that is used
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in conjunction with <a href="../../../je/rep/quote/UpdateForwardingStockQuotes.html" title="class in je.rep.quote"><code>UpdateForwardingStockQuotes</code></a>. The router is
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unaware of the state (<code>Master</code> or <code>Replica</code>) of each
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node and simply forwards requests entered at the router's console to each
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node in the group in Round Robin fashion.
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<p>
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The <code>UpdateForwardingStockQuotes</code> instance will in turn, if
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necessary, forward any write requests to the current master and return the
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results back to SimpleRouter. <code>UpdateForwardingStockQuotes</code>
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instances do not have their own consoles, they only service requests
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delivered over the network by this router.
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<p>
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SimpleRouter takes <code>host:port</code> pairs as arguments, one pair for
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each instance of the <code>UpdateForwardingStockQuotes</code> application.
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The port numbers in this case are application, not HA, port numbers on which
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the <code>UpdateForwardingStockQuotes</code> application listens for
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application messages forwarded by <code>SimpleRouter</code>. They must
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therefore be different from the ports used internally by HA, that is, from
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the HA port numbers specified as arguments to
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<code>UpdateForwardingStockQuotes</code>. The application port number is
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computed in this example by adding
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<code>HARouter.APP_PORT_DISPLACEMENT</code> (default value 100) to the HA
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port number associated with the node. So, if node "n1" uses port 5001 for
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HA, it must (based upon the conventions used in these examples) use port
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5101, for application level communication.
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<p>
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SimpleRouter can thus be invoked as follows:
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<pre>
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java je.rep.quote.SimpleRouter node.acme.com:5101 node.acme.com:5102 node.acme.com:5103
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</pre>
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for a three node group. In this case, the applications will use ports 5101,
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through 5103 for application messages, while HA will use ports 5001 through
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5003.
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<p>
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SimpleRouter and UpdateForwardingStockQuotes can be started in any order.</div>
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<dl>
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<dt><span class="seeLabel">See Also:</span></dt>
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<dd><a href="../../../je/rep/quote/UpdateForwardingStockQuotes.html" title="class in je.rep.quote"><code>UpdateForwardingStockQuotes</code></a></dd>
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</dl>
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</li>
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<h3>Method Summary</h3>
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<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption>
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<tr>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<tr id="i0" class="altColor">
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<td class="colFirst"><code>static void</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../je/rep/quote/SimpleRouter.html#main-java.lang.String:A-">main</a></span>(java.lang.String[] argv)</code> </td>
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<h3>Methods inherited from class java.lang.Object</h3>
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<code>equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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<h4>main</h4>
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<pre>public static void main(java.lang.String[] argv)
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throws java.lang.Exception</pre>
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<dt><span class="throwsLabel">Throws:</span></dt>
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<dd><code>java.lang.Exception</code></dd>
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<div class="aboutLanguage"><b>Berkeley DB Java Edition Examples</b><br><font size=\"-1\"> version 7.5.11</font>
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