111 lines
8.0 KiB
HTML
111 lines
8.0 KiB
HTML
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<meta name="DC.Title" content="Lookup information" />
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<meta name="abstract" content="Use this information to learn how you can use this optional data to further identify a target user identity that Enterprise Identity Mapping (EIM) APIs can use during a mapping lookup operation to further refine the search for the target user identity that is the object of the operation." />
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<title>Lookup information</title>
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<body id="rzalvlookupinfodef"><a name="rzalvlookupinfodef"><!-- --></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">Lookup information</h1>
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<div><p>Use this information to learn how you can use this optional data
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to further identify a target user identity that Enterprise Identity Mapping
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(EIM) APIs can use during a mapping lookup operation to further refine the
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search for the target user identity that is the object of the operation.</p>
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<p>In this release you can provide <em>optional</em> data called lookup information
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to further identify a target user identity. This target user identity can
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be specified either in an identifier association or in a policy association.
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Lookup information is a unique character string that either the <samp class="codeph">eimGetTargetFromSource</samp> EIM
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API or the <samp class="codeph">eimGetTargetFromIdentifier</samp> EIM API can use during
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a mapping lookup operation to further refine the search for the target user
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identity that is the object of the operation. Data that you specify for lookup
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information corresponds to the registry users additional information parameter
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for these EIM APIs. </p>
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<p>Lookup information is necessary only when a mapping lookup operation can
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return more than one target user identity. A mapping lookup operation can
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return multiple target user identities when one or more of the following situations
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exist: </p>
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<ul><li>An EIM identifier has multiple individual target associations to the same
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target registry. </li>
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<li>More than one EIM identifier has the same user identity specified in a
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source association and each of these EIM identifiers has a target association
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to the same target registry, although the user identity specified for each
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target association may be different.</li>
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<li>More than one default domain policy association specifies the same target
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registry.</li>
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<li>More than one default registry policy association specifies the same source
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registry and the same target registry.</li>
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<li>More than one certificate filter policy association specifies the same
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source X.509 registry, certificate filter, and target registry.</li>
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</ul>
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<div class="note"><span class="notetitle">Note:</span> A mapping lookup operation that returns more than one target user identity
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can create problems for EIM-enabled applications, including i5/OS™ applications
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and products, that are not designed to handle these ambiguous results. However,
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base i5/OS applications
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such as iSeries™ Access
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for Windows<sup>®</sup> can
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not use lookup information to distinguish among multiple target user identities
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returned by a lookup operation. Consequently, you might consider redefining
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associations for the domain to ensure that a mapping lookup operation can
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return a single target user identity to ensure that base i5/OS applications
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can successfully perform lookup operations and map identities.</div>
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<p>You can use lookup information to avoid situations where it is possible
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for mapping lookup operations to return more than one target user identity.
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To prevent mapping lookup operations from returning multiple target user identities,
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you must define unique lookup information for each target user identity in
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each association. This lookup information must be provided to the mapping
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lookup operation to ensure that the operation can return a unique target user
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identity. Otherwise, applications that rely on EIM may not be able to determine
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the exact target identity to use. </p>
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<p>For example, you have an EIM identifier named <samp class="codeph">John Day</samp> who
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has two user profiles on System A. One of these user profiles is <samp class="codeph">JDUSER</samp> on
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System A and another is <samp class="codeph">JDSECADM</samp>, which has security administrator
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special authority. There are two target association for the John Day identifier.
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One of these target associations is for the <samp class="codeph">JDUSER</samp> user identity
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in the target registry of <samp class="codeph">System_A</samp> and has lookup information
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of <samp class="codeph">user authority</samp> specified for <samp class="codeph">JDUSER</samp>.
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The other target association is for the <samp class="codeph">JDSECADM</samp> user identity
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in the target registry of <samp class="codeph">System_A</samp> and has lookup information
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of <samp class="codeph">security officer</samp> specified for <samp class="codeph">JDSECADM</samp>. </p>
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<p>If a mapping lookup operation does not specify any lookup information,
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the lookup operation returns both the <samp class="codeph">JDUSER</samp> and the<samp class="codeph">JDSECADM</samp> user
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identities. If a mapping lookup operation specifies lookup information of <samp class="codeph">user
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authority</samp>, the lookup operation returns the <samp class="codeph">JDUSER</samp> user
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identity only. If a mapping lookup operation specifies lookup information
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of <samp class="codeph">security officer</samp>, the lookup operation returns the <samp class="codeph">JDSECADM</samp> user
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identity only. </p>
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<div class="note"><span class="notetitle">Note:</span> If you delete the last target association for a user identity (whether
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it is an identifier association or a policy association), the target user
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identity and all lookup information is deleted from the domain as well. </div>
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<p>Because you can use certificate policy associations and other associations
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in a variety of overlapping ways, you should have a thorough understanding
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of both EIM <a href="rzalv_map_pol_support.htm#rzalv_map_pol_support">mapping policy support</a> and how <a href="rzalveservereimmaplookup.htm#rzalveservereimmaplookup">lookup operations</a> work before you create and use certificate
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policy associations.</p>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzalveserverassoc.htm" title="This information explains how you can use associating identities in different user registries.">EIM associations</a></div>
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</div>
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</div>
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</body>
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