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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>StockQuotesRMIForwarding (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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<li><a href="#method.detail">Method</a></li>
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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 StockQuotesRMIForwarding" class="title">Class StockQuotesRMIForwarding</h2>
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</div>
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<div class="contentContainer">
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<ul class="inheritance">
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<li>java.lang.Object</li>
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<li>
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<ul class="inheritance">
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<li><a href="../../../je/rep/quote/StockQuotes.html" title="class in je.rep.quote">je.rep.quote.StockQuotes</a></li>
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<li>
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<ul class="inheritance">
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<li>je.rep.quote.StockQuotesRMIForwarding</li>
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</ul>
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</li>
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</ul>
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<br>
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<pre>public class <span class="typeNameLabel">StockQuotesRMIForwarding</span>
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extends <a href="../../../je/rep/quote/StockQuotes.html" title="class in je.rep.quote">StockQuotes</a></pre>
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<div class="block">This example is a small variation on the basic <a href="../../../je/rep/quote/StockQuotes.html" title="class in je.rep.quote"><code>StockQuotes</code></a> example.
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Instead of rejecting update requests made at a Replica's console, it
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illustrates how RMI could be used to forward write requests to a Master. The
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example is otherwise identical to <code>StockQuotes</code> and you should
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read the javadoc associated with it before proceeding with this example. The
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discussion that follows thus focusses entirely on the RMI based
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write-forwarding aspects of this example.
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<p>
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Each node in this example is an RMI server and hosts an RMI registry. The
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registry contains exactly one binding associated with the name:
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<a href="../../../je/rep/quote/StockQuotesRMIForwarding.html#RMI_NAME"><code>RMI_NAME</code></a>. The object associated
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with the RMI binding (an instance of <a href="../../../je/rep/quote/StockQuotesRMIForwarding.WriteServicesImpl.html" title="class in je.rep.quote"><code>StockQuotesRMIForwarding.WriteServicesImpl</code></a>) makes
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available all the high level database write operations that are part of the
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application. When this node is the <code>Master</code>,
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<code>Replicas</code> will use the remote methods to invoke write operations
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on it. All nodes are RMI servers, but only the current <code>Master</code>
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is actually used to serve write requests while it is in the
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<code>Master</code> state. The Replicas play the role of RMI clients making
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remote method calls to the Master to foward their write requests.
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<p>
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Please review the javadoc in <a href="../../../je/rep/quote/StockQuotes.html" title="class in je.rep.quote"><code>StockQuotes</code></a> for a detailed description
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of the arguments that must be supplied at startup. The only difference is
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that you must use the name of this class when invoking the Java VM.
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<p>
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For example, the first node can be started as follows:
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<pre>
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java je.rep.quote.StockQuotesWriteForwarding -env /tmp/stockQuotes1 \
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-nodeName n1 \
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-nodeHost node.acme.com:5001 \
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-helperHost node.acme.com:5001
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</pre>
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<p>
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This instance of the application will therefore use port 5001 for HA, and,
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by convention, port 5101 (5001 + <code>RMI_PORT_DISPLACEMENT</code>) for
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the RMI registry. If you are running on multiple machines you may (depending
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upon your DNS setup) need to specify the
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<code>java.rmi.server.hostname</code> property to ensure that RMI does not
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associate loopback addresses with entries in its registry.</div>
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</li>
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</ul>
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<div class="summary">
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<!-- ======== NESTED CLASS SUMMARY ======== -->
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</a>
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<h3>Nested Class Summary</h3>
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<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Nested Class Summary table, listing nested classes, and an explanation">
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<caption><span>Nested Classes</span><span class="tabEnd"> </span></caption>
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<tr>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<th class="colLast" scope="col">Class and Description</th>
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</tr>
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<tr class="altColor">
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<td class="colFirst"><code>static interface </code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../je/rep/quote/StockQuotesRMIForwarding.WriteServices.html" title="interface in je.rep.quote">StockQuotesRMIForwarding.WriteServices</a></span></code> </td>
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</tr>
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<tr class="rowColor">
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<td class="colFirst"><code>class </code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../je/rep/quote/StockQuotesRMIForwarding.WriteServicesImpl.html" title="class in je.rep.quote">StockQuotesRMIForwarding.WriteServicesImpl</a></span></code>
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<div class="block">The class supplies the RMI implementation of the write methods.</div>
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</td>
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</tr>
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</table>
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</li>
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</ul>
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<!-- =========== FIELD SUMMARY =========== -->
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<h3>Field Summary</h3>
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<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation">
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<caption><span>Fields</span><span class="tabEnd"> </span></caption>
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<tr>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<th class="colLast" scope="col">Field and Description</th>
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<tr class="altColor">
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<td class="colFirst"><code>static java.lang.String</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../je/rep/quote/StockQuotesRMIForwarding.html#RMI_NAME">RMI_NAME</a></span></code> </td>
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</tr>
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</table>
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</li>
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<!-- ========== METHOD SUMMARY =========== -->
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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="t2" class="tableTab"><span><a href="javascript:show(2);">Instance 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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<th class="colLast" scope="col">Method and Description</th>
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</tr>
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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/StockQuotesRMIForwarding.html#main-java.lang.String:A-">main</a></span>(java.lang.String[] argv)</code> </td>
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</tr>
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<tr id="i1" class="rowColor">
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<td class="colFirst"><code>void</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../je/rep/quote/StockQuotesRMIForwarding.html#quit-java.io.PrintStream-">quit</a></span>(java.io.PrintStream out)</code>
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<div class="block">Performs the RMI associated cleanup so that the RMI serve can be
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shutdown cleanly.</div>
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</td>
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</tr>
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</table>
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<ul class="blockList">
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<li class="blockList"><a name="methods.inherited.from.class.java.lang.Object">
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<!-- -->
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</a>
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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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<div class="details">
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<!-- ============ FIELD DETAIL =========== -->
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<!-- -->
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</a>
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<h3>Field Detail</h3>
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<a name="RMI_NAME">
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<!-- -->
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</a>
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<h4>RMI_NAME</h4>
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<pre>public static final java.lang.String RMI_NAME</pre>
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<dl>
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<dt><span class="seeLabel">See Also:</span></dt>
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<dd><a href="../../../constant-values.html#je.rep.quote.StockQuotesRMIForwarding.RMI_NAME">Constant Field Values</a></dd>
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</dl>
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</li>
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</ul>
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</li>
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<!-- ============ METHOD DETAIL ========== -->
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<li class="blockList"><a name="method.detail">
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<!-- -->
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</a>
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<h3>Method Detail</h3>
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<a name="quit-java.io.PrintStream-">
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<!-- -->
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</a>
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<ul class="blockList">
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<li class="blockList">
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<h4>quit</h4>
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<pre>public void quit(java.io.PrintStream out)</pre>
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<div class="block">Performs the RMI associated cleanup so that the RMI serve can be
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shutdown cleanly.</div>
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<dl>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
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<dd><code><a href="../../../je/rep/quote/StockQuotes.html#quit-java.io.PrintStream-">quit</a></code> in class <code><a href="../../../je/rep/quote/StockQuotes.html" title="class in je.rep.quote">StockQuotes</a></code></dd>
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</dl>
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</li>
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</ul>
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<a name="main-java.lang.String:A-">
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</a>
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<li class="blockList">
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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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<dl>
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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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</dl>
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</li>
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</ul>
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</li>
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</ul>
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</li>
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</ul>
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</div>
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</div>
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