85 lines
4.8 KiB
HTML
85 lines
4.8 KiB
HTML
<?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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<meta name="DC.Type" content="reference" />
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<meta name="DC.Title" content="Exit programs" />
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<meta name="abstract" content="An exit program is a program to which control is passed from a calling program." />
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<meta name="description" content="An exit program is a program to which control is passed from a calling program." />
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<meta name="DC.Relation" scheme="URI" content="rzaikodbcperfconsd.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzaiksampluserextpgm.htm" />
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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>Exit programs</title>
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</head>
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<body id="odbcexitprog"><a name="odbcexitprog"><!-- --></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">Exit programs</h1>
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<div><p>An exit program is a program to which control is passed from a
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calling program.</p>
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<div class="section"><p>When you specify an <strong>exit program</strong>, the servers pass the
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following two parameters to the exit program before running your request: </p>
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<ul><li>A 1-byte return code value.</li>
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<li>A structure containing information about your request. This structure
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is different for each of the exit points.</li>
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</ul>
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</div>
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<div class="section"><p>These two parameters allow the exit program to determine whether
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your request is allowed. If the exit program sets the return code to <span>X'F0'</span>,
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the server rejects the request. If the return code is set to anything else,
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the server allows the request.</p>
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</div>
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<div class="section"><p>The same program can be used for multiple exit points. The program
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can determine what function is being called by looking at the data in the
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second parameter structure.</p>
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</div>
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<div class="section"><p>Use the <span class="cmdname">Work with Registration Information (WRKREGINF)</span> command
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to add your exit programs to the database exit points.</p>
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</div>
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<div class="section"><p>The database server has five different exit points defined: </p>
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<dl><dt class="dlterm">QIBM_QZDA_INIT</dt>
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<dd>called at server initiation</dd>
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<dt class="dlterm">QIBM_QZDA_NDB1</dt>
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<dd>called for native database requests</dd>
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<dt class="dlterm">QIBM_QZDA_SQL1</dt>
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<dd>called for SQL requests</dd>
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<dt class="dlterm">QIBM_QZDA_SQL2</dt>
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<dd>called for SQL requests</dd>
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<dt class="dlterm">QIBM_QZDA_ROI1</dt>
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<dd>called for retrieving object information requests and SQL catalog functions <div class="note"><span class="notetitle">Note:</span> This
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exit point is called less often than in V5R1 and earlier Client Access ODBC
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drivers. If you have an exit program that uses this exit point, verify that
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it still works as intended.</div>
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</dd>
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</dl>
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</div>
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</div>
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<div>
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<ul class="ullinks">
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<li class="ulchildlink"><strong><a href="rzaiksampluserextpgm.htm">Examples: User exit programs</a></strong><br />
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The following examples do not show all of the programming considerations or techniques. Review the examples before you begin application design and coding.</li>
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<li class="ulchildlink"><strong><a href="rzaikexitpgmparmformat.htm">Exit program parameter formats</a></strong><br />
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The exit points for native database and retrieving object information have two formats that are defined: QIBM_QZDA_SQL1 and QIBM_QZDA_SQL2. Depending on the type of function that is requested, one of the formats is used.</li>
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</ul>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzaikodbcperfconsd.htm" title="See any of the following ODBC performance topics.">iSeries Access for Windows ODBC performance</a></div>
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</div>
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</div>
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</body>
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