MACROMEDIA COLDFUSION MX 61-DEVELOPING COLDFUSION MX, Develop Manual

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502 Chapter 23: Managing LDAP Directories
Referrals
An LDAP database can be distributed over multiple servers. If the requested information is not on
the current server, the LDAP v3 standard provides a mechanism for the server to return a referral
to the client that informs the client of an alternate server. (This feature is also included in some
LDAP v2-compliant servers.)
ColdFusion can handle referrals automatically. If you specify a nonzero
referral
attribute in the
cfldap
tag, ColdFusion sends the request to the server specified in the referral.
The
referral
attribute value specifies the number of referrals allowed for the request. For
example, if the
referral
attribute is 1, and server A sends a referral to server B, which then sends
a referral to server C, ColdFusion returns an error. If the
referral
attribute is 2, and server C has
the information, the LDAP request succeeds. The value to use depends on the topology of the
distributed LDAP directory, the importance of response speed, and the value of response
completeness.
When ColdFusion follows a referral, the
rebind
attribute specifies whether ColdFusion uses the
cfldap
tag login information in the request to the new server. The default, No, sends an
anonymous login to the server.
<h2>Attribute Types</h2>
<table border="1" >
<tr>
<th>Name</th>
<th>Description</th>
<th>Multivalued?</th>
</tr>
<cfloop index = "thisElement" list =
#ReplaceNoCase(attributeTypes, ",
alias", "<br> Alias", "all")#
delimiters = ",">
<cfscript>
thiselement = Trim(thisElement);
nameloc = Find("NAME",
thisElement);
descloc = Find("DESC",
thisElement);
syntaxloc = Find("SYNTAX",
thisElement);
singleloc = Find("SINGLE",
thisElement);
endloc = Len(thisElement);
</cfscript>
<tr>
<td><cfoutput>#Mid(thisElement,
6, descloc-nameloc-8)#
</cfoutput></td>
<td><cfoutput>#Mid(thisElement,
6, syntaxloc-descloc-8)
#</cfoutput></td>
<cfif #singleloc# EQ 0>
<td><cfoutput>Yes</cfoutput>
</td>
<cfelse>
<td><cfoutput>No</cfoutput>
</td>
</cfif>
</tr>
</cfloop>
</table>
</cfloop>
Does the same types of calculations for the
attribute types as for the object classes.
The attribute type field can contain the text ",
alias for....". This text includes a comma,
which also delimits attribute entries. Use the
ReplaceNoCase
function to replace any
comma that precedes the word "alias" with
an HTML
<br>
tag.
The attribute definition includes a numeric
syntax identifier, which the code does not
display, but uses its location in calculating
the locations of the other fields.
Code Description