63 lines
4.1 KiB
HTML
63 lines
4.1 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<meta name="DC.Type" content="reference" />
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<meta name="DC.Title" content="Keyed data queues" />
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<meta name="abstract" content="The BaseDataQueue and KeyedDataQueue classes provide methods for working with keyed data queues." />
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<meta name="description" content="The BaseDataQueue and KeyedDataQueue classes provide methods for working with keyed data queues." />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="dtaqkey" />
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<meta name="DC.Language" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Keyed data queues</title>
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</head>
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<body id="dtaqkey"><a name="dtaqkey"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Keyed data queues</h1>
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<div><p>The BaseDataQueue and KeyedDataQueue classes provide methods for
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working with keyed data queues.</p>
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<div class="section"><p><a href="javadoc/com/ibm/as400/access/BaseDataQueue.html#NAVBAR_TOP"> BaseDataQueue</a> </p>
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<p><a href="javadoc/com/ibm/as400/access/KeyedDataQueue.html#NAVBAR_TOP"> KeyedDataQueue</a> </p>
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<ul><li><a href="javadoc/com/ibm/as400/access/KeyedDataQueue.html#CREATE(INT, INT)"> Create</a> a keyed data queue on the server. The Java™ program
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must specify key length and maximum size of an entry on the queue. The Java program
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can optionally specify authority information, save sender information, force
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to disk, and provide a queue description.</li>
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<li><a href="javadoc/com/ibm/as400/access/KeyedDataQueue.html#PEEK(BYTE[])"> Peek</a> at an entry based on the specified key without
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removing it from the queue. The Java program can wait or return immediately
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if no entry is currently on the queue that matches the key criteria.</li>
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<li><a href="javadoc/com/ibm/as400/access/KeyedDataQueue.html#READ(BYTE[])"> Read</a> an entry off the queue based on the specified key.
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The Java program
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can wait or return immediately if no entry is available on the queue that
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matches the key criteria.</li>
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<li><a href="javadoc/com/ibm/as400/access/KeyedDataQueue.html#WRITE(BYTE[], BYTE[])"> Write</a> a keyed entry to the queue.</li>
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<li><a href="javadoc/com/ibm/as400/access/KeyedDataQueue.html#CLEAR(BYTE[])"> Clear</a> all entries or all entries that match a specified
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key.</li>
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<li><a href="javadoc/com/ibm/as400/access/BaseDataQueue.html#DELETE()"> Delete</a> the queue.</li>
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</ul>
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<p>The BaseDataQueue and KeyedDataQueue classes also provide additional
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methods for retrieving the attributes of the data queue.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Examples: Working with keyed data queues</h4><p>The following
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keyed data queue examples illustrate how a producer puts items on a data queue,
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and how a consumer takes the items off the queue and processes them:</p>
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<blockquote><p><a href="dqkeyedproducerexample.htm#dqkeyedproducerexample">Example: Using KeyedDataQueue</a></p>
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<p><a href="dqkeyedconsumerexample.htm#dqkeyedconsumerexample">Example: Using KeyedDataQueue classes to read entries off a data queue</a></p>
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</blockquote>
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</div>
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</div>
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</body>
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</html>
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