464 lines
13 KiB
HTML
464 lines
13 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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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 name="Copyright" content="Copyright (c) 2006 by IBM Corporation">
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<title>Retrieve Clustered Hash Table Entry (QcstRetrieveCHTEntry) API</title>
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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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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<!-- Change History: -->
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<!-- YYMMDD USERID Change description -->
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<!-- qctRetrieveElement.htm created by Vicki Morey on Wed Dec 6 2000 -->
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<!-- Edited by Kersten Oct 2001 -->
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<!-- End Header Records -->
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<!-- -->
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<!-- -->
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<!-- -->
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<!-- Begin Developer Note ========================================== -->
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<!-- NOTE: If you are adding, changing, or removing ANY requirements -->
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<!-- for this API chance are good that the GUI code need to change -->
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<!-- also. The Cluster GUI code is built on top of this API and it -->
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<!-- does a certain amount of explicit and implicit validation -->
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<!-- checking of user data prior to the API call being made. Please -->
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<!-- have the Cluster GUI developer check the -->
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<!--/as400/v5r4m0.guix/cur/cmvc/java.pgm/ugcl.guix/com/ibm/as400/opnav/ugcl/ClGuiActionsManager.java/ClGuiActionsManager.java -->
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<!-- part to determine if any Cluster GUI code changes are needed. -->
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<!-- End Developer Note -->
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<link rel="stylesheet" type="text/css" href="../rzahg/ic.css">
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</head>
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<body>
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<!--Java sync-link-->
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<script type="text/javascript" language="Javascript" src="../rzahg/synch.js">
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</script>
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<a name="Top_Of_Page"></a>
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<h2>Retrieve Clustered Hash Table Entry (QcstRetrieveCHTEntry) API</h2>
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<div class="box" style="width: 70%;">
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<br>
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Required Parameter Group:<br>
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<!-- iddvc RMBR -->
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<br>
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<table width="100%">
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<tr>
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<td align="center" valign="TOP" width="10%">1</td>
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<td align="LEFT" valign="TOP" width="50%">Receiver variable</td>
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<td align="LEFT" valign="TOP" width="20%">Output</td>
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<td align="LEFT" valign="TOP" width="20%">Void(*)</td>
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</tr>
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<tr>
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<td align="center" valign="TOP">2</td>
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<td align="LEFT" valign="TOP">Length of receiver variable</td>
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<td align="LEFT" valign="TOP">Input</td>
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<td align="LEFT" valign="TOP">Binary(4)</td>
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</tr>
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<tr>
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<td align="center" valign="TOP">3</td>
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<td align="LEFT" valign="TOP">Connection handle</td>
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<td align="LEFT" valign="TOP">Input</td>
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<td align="LEFT" valign="TOP">Char(16)</td>
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</tr>
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<tr>
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<td align="center" valign="TOP">4</td>
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<td align="LEFT" valign="TOP">Format name</td>
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<td align="LEFT" valign="TOP">Input</td>
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<td align="LEFT" valign="TOP">Char(8)</td>
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</tr>
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<tr>
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<td align="center" valign="TOP">5</td>
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<td align="LEFT" valign="TOP">Length of key</td>
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<td align="LEFT" valign="TOP">Input</td>
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<td align="LEFT" valign="TOP">Binary(4)</td>
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</tr>
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<tr>
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<td align="center" valign="TOP">6</td>
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<td align="LEFT" valign="TOP">Key</td>
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<td align="LEFT" valign="TOP">Input</td>
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<td align="LEFT" valign="TOP">Char(*)</td>
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</tr>
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<tr>
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<td align="center" valign="TOP">7</td>
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<td align="LEFT" valign="TOP">Error code</td>
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<td align="LEFT" valign="TOP">I/O</td>
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<td align="LEFT" valign="TOP">Void(*)</td>
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</tr>
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</table>
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<br>
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Service Program: QCSTCHT<br>
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<!-- iddvc RMBR -->
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<br>
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Default Public Authority: *USE<br>
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<!-- iddvc RMBR -->
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<br>
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Threadsafe: Yes<br>
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<!-- iddvc RMBR -->
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<br>
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</div>
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<p>The Retrieve Clustered Hash Table Entry (QcstRetrieveCHTEntry) API retrieves
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an entry from the clustered hash table specified by the connection handle
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parameter. The entry to be retrieved is identified by the key parameter. If the
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entry exists, is not expired and the requesting user is authorized, the
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information will be returned in the receiver parameter in the selected
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format.<br>
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</p>
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<h3>Restrictions:</h3>
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<ul>
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<li>A connection must have been established with the clustered hash table
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server.</li>
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<li>When this API is called, the clustered hash table server must be active on
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the requesting node.</li>
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<li>This API must be run under the same job that issued the <a href=
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"clchtconnect.htm">Connect Clustered Hash Table</a> (QcstConnectCHT) API.</li>
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</ul>
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<br>
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<h3>Authorities and Locks</h3>
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<dl>
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<dt><em>Entry Authority Access Level (for restricted entries)</em></dt>
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<dd>*ALLOBJ or owner of the entry</dd>
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</dl>
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<br>
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<h3>Required Parameter Group</h3>
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<dl>
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<dt><strong>Receiver variable</strong></dt>
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<dd>OUTPUT; CHAR(*)
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<p>The receiver variable that receives the information requested. You can
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specify the size of the area to be smaller than the format requested as long as
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you specify the length of the parameter correctly. As a result, the API returns
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only the information that the area can hold.</p>
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</dd>
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<dt><strong>Length of receiver variable</strong></dt>
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<dd>INPUT; BINARY(4)
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<p>The length of the receiver variable provided. The length of receiver
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variable parameter may be specified up to the size of the receiver variable
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specified in the user program. If the length of the receiver variable parameter
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specified is larger than the allocated size of the receiver variable specified
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in the user program, the results are not predictable. The minimum length is 8
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bytes.</p>
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</dd>
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<dt><strong>Connection handle</strong></dt>
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<dd>INPUT; CHAR(16)
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<p>This is an active connection handle for the clustered hash table server. It
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is obtained by calling the <a href="clchtconnect.htm">Connect Clustered Hash
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Table</a> (QcstConnectCHT) API.</p>
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</dd>
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<dt><strong>Format name</strong></dt>
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<dd>INPUT; CHAR(8)
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<p>The content and format of the information that is returned. The possible
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format names are as follows:</p>
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<table cellpadding="5">
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<!-- cols="25 75" -->
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<tr>
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<td align="left" valign="top"><em>CHTR0100</em></td>
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<td align="left" valign="top">Entry information. For more information, see <a href="#chtr0100">CHTR0100
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Format</a>.</td>
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</tr></table>
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<br>
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</dd>
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<dt><strong>Length of key</strong></dt>
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<dd>INPUT; BINARY(4)
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<p>The length of the key of the entry to be retrieved. This must be
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16 bytes.</p>
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</dd>
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<dt><strong>Key</strong></dt>
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<dd>INPUT; Char(*)
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<p>The key of the entry to be retrieved.</p>
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</dd>
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<dt><strong>Error code</strong></dt>
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<dd>I/O; CHAR(*)
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<p>The structure in which to return error information. For the format of the
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structure, see <a href="../apiref/error.htm#hdrerrcod">Error code parameter</a>.</p>
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</dd>
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</dl>
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<br>
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<h3><a name="chtr0100">CHTR0100 Format</a></h3>
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<table border width="80%">
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<tr>
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<th align="center" valign="bottom" colspan="2">Offset</th>
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<th align="left" valign="bottom" rowspan="2">Type</th>
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<th align="left" valign="bottom" rowspan="2">Field</th>
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</tr>
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<tr>
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<th align="center" valign="bottom">Dec</th>
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<th align="center" valign="bottom">Hex</th>
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</tr>
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<tr>
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<td align="center" valign="top" width="10%">0</td>
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<td align="center" valign="top" width="10%">0</td>
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<td align="left" valign="top" width="20%">BINARY(4)</td>
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<td align="left" valign="top" width="60%">Bytes returned</td>
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</tr>
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<tr>
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<td align="center" valign="top">4</td>
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<td align="center" valign="top">4</td>
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<td align="left" valign="top">BINARY(4)</td>
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<td align="left" valign="top">Bytes available</td>
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</tr>
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<tr>
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<td align="center" valign="top">8</td>
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<td align="center" valign="top">8</td>
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<td align="left" valign="top">BINARY(4)</td>
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<td align="left" valign="top">Offset to data</td>
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</tr>
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<tr>
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<td align="center" valign="top">12</td>
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<td align="center" valign="top">C</td>
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<td align="left" valign="top">BINARY(4)</td>
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<td align="left" valign="top">Length of data</td>
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</tr>
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<tr>
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<td align="center" valign="top">16</td>
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<td align="center" valign="top">10</td>
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<td align="left" valign="top">BINARY(4)</td>
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<td align="left" valign="top">Entry status</td>
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</tr>
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<tr>
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<td align="center" valign="top">20</td>
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<td align="center" valign="top">14</td>
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<td align="left" valign="top">BINARY(4)</td>
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<td align="left" valign="top">Authority access level</td>
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</tr>
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<tr>
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<td align="center" valign="top">24</td>
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<td align="center" valign="top">18</td>
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<td align="left" valign="top">CHAR(10)</td>
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<td align="left" valign="top">Owning user profile</td>
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</tr>
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<tr>
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<td align="center" valign="top">34</td>
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<td align="center" valign="top">22</td>
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<td align="left" valign="top">CHAR(10)</td>
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<td align="left" valign="top">Storing user profile</td>
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</tr>
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<tr>
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<td align="center" valign="top">44</td>
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<td align="center" valign="top">2C</td>
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<td align="left" valign="top">CHAR(*)</td>
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<td align="left" valign="top">Data</td>
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</tr>
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</table>
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<br>
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<br>
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<h3>Field Descriptions</h3>
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<p><strong>Authority access level.</strong> This field describes who is allowed
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to retrieve and update the entry. Valid special values are:</p>
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<table cellpadding="5">
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<!-- cols="5 95" -->
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<tr>
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<td align="left" valign="top"><em>0</em></td>
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<td align="left" valign="top">The user profile that owns the entry and a user
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with *ALLOBJ authority is allowed to retrieve and update the entry.</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>1</em></td>
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<td align="left" valign="top">Any user can retrieve and update the entry
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associated with this key.</td>
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</tr>
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</table>
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<p><strong>Bytes available.</strong> The number of bytes of information
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available to be returned to the user.</p>
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<p><strong>Bytes returned.</strong> The number of bytes of information returned
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to the user.</p>
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<p><strong>Data.</strong> The data associated with the specified key.</p>
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<p><strong>Entry status.</strong> Indicates whether the entry is in conflict or
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not. An entry is in conflict if it is not the same on all nodes in the
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clustered hash table domain. A potential cause of an entry in conflict is the
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clustered hash table domain nodes were not communicating and the information
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associated with the key was updated from more than one cluster partition. The
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entry was marked in conflict when the cluster partition was merged together.
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For additional details on cluster node partitions, see
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<a href="../rzaig/rzaigtroubleshootpartitionerrors.htm">Partition
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errors</a>. The entry is not the same on all nodes in the clustered
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hash table domain. To resolve an entry in conflict, use the
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<a href="clchtstoreentry.htm">Store Clustered Hash Table Entry</a> (QcstStoreCHTEntry)
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API to update the entry to the correct value. The possible values are:</p>
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<table cellpadding="5">
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<!-- cols="5 95" -->
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<tr>
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<td align="left" valign="top"><em>0</em></td>
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<td align="left" valign="top">Entry is not in conflict in the clustered hash
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table.</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>1</em></td>
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<td align="left" valign="top">Entry is in conflict in the clustered hash
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table.</td>
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</tr>
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</table>
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<p><strong>Length of data.</strong> Length of the data associated with the
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specified key.</p>
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<p><strong>Offset to data.</strong> The offset from the beginning of the
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structure to the Data field.</p>
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<p><strong>Owning user profile.</strong> The user profile that originally
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stored the entry associated with this key.</p>
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<p><strong>Storing user profile.</strong> The user profile that last stored the
|
||
|
|
entry associated with this key.<br>
|
||
|
|
</p>
|
||
|
|
|
||
|
|
<br>
|
||
|
|
|
||
|
|
<h3>Error Messages</h3>
|
||
|
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|
||
|
|
<table width="100%" cellpadding="5">
|
||
|
|
<!-- cols="15 85" -->
|
||
|
|
<tr>
|
||
|
|
<th align="left" valign="top">Message ID</th>
|
||
|
|
<th align="left" valign="top">Error Message Text</th>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
<td width="15%" valign="top">CPF3C1E E</td>
|
||
|
|
<td width="85%" valign="top">Required parameter &1 omitted.</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
<td align="left" valign="top">CPF3C21 E</td>
|
||
|
|
<td align="left" valign="top">Format name &1 is not valid.</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
<td align="left" valign="top">CPF3C24 E</td>
|
||
|
|
<td align="left" valign="top">Length of receiver variable not valid.</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
<td align="left" valign="top">CPF3C3C E</td>
|
||
|
|
<td align="left" valign="top">Value for parameter &1 not valid.</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
<td align="left" valign="top">CPF3CF1 E</td>
|
||
|
|
<td align="left" valign="top">Error code parameter not valid.</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
<td align="left" valign="top">CPF3CF2 E</td>
|
||
|
|
<td align="left" valign="top">Error(s) occurred during running of &1 API.</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
<td align="left" valign="top">CPFBB26 E</td>
|
||
|
|
<td align="left" valign="top">Cluster Resource Services not active or not responding.</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
<td align="left" valign="top">CPFBB4D E</td>
|
||
|
|
<td align="left" valign="top">Cluster Resource Services cannot process the request.</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
<td align="left" valign="top">CPFBD06 E</td>
|
||
|
|
<td align="left" valign="top">Key not found in clustered hash table &1.</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
<td align="left" valign="top">CPFBD07 E</td>
|
||
|
|
<td align="left" valign="top">User profile &1 not authorized to clustered hash table
|
||
|
|
entry.</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
<td align="left" valign="top">CPFBD09 E</td>
|
||
|
|
<td align="left" valign="top">Clustered hash table server &1 not active or not
|
||
|
|
responding.</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
<td align="left" valign="top">CPFBD0A E</td>
|
||
|
|
<td align="left" valign="top">Clustered hash table server &1 internal error.</td>
|
||
|
|
</tr>
|
||
|
|
|
||
|
|
<tr>
|
||
|
|
<td align="left" valign="top">CPFBD0B E</td>
|
||
|
|
<td align="left" valign="top">Connection handle not active.</td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
|
||
|
|
<br>
|
||
|
|
|
||
|
|
|
||
|
|
<hr>
|
||
|
|
API introduced: V5R2
|
||
|
|
|
||
|
|
<hr>
|
||
|
|
<center>
|
||
|
|
<table cellpadding="2" cellspacing="2">
|
||
|
|
<tr align="center">
|
||
|
|
<td valign="middle" align="center"><a href="#Top_Of_Page">Top</a> | <a href=
|
||
|
|
"clust1a1.htm">Cluster APIs</a> | <a href="aplist.htm">APIs by
|
||
|
|
category</a></td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
</center>
|
||
|
|
</body>
|
||
|
|
</html>
|
||
|
|
|