!!! Overview
Usually when using [DirXML], the desire is to make a direct SQL call from the driver to set some values in a Database table.

In this case, we needed to set some values within eDirectory based on a SQL Join. Supposedly this can be done within the "normal" setup of the tables, but on our DB2 instance we were unable to make this work.

The code makes a direct SQL call from the driver and places the, possibly multi-values, into an attribute in eDirectory.

! Change the Conditions
For your use, you will probably need to change the conditions as these were more for demonstrative purposes.

%%information
Be sure to add the [XML namespace] to the policy. 
%%

Shows a [DirXML Example] and [XPATH Example] for working with [{$pagename}]: 
{{{
<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE policy PUBLIC "policy-builder-dtd" "C:\Program Files\Novell\Designer3\Designer\eclipse\plugins\com.novell.idm.policybuilder_3.0.0.200807211539\DTD\dirxmlscript3.5.1.dtd"><policy xmlns:cmd="http://www.novell.com/nxsl/java/com.novell.nds.dirxml.driver.XdsCommandProcessor">
	<rule>
		<description>Get DB GID</description>
		<comment xml:space="preserve">We parse the src-dn to get the primary key in the user table  that is used in the following query.</comment>
		<conditions>
			<and>
				<if-src-dn op="available"/>
			</and>
		</conditions>
		<actions>
			<do-set-local-variable name="lv-usergid" scope="policy">
				<arg-string>
					<token-parse-dn dest-dn-format="slash" length="1" src-dn-format="ldap" start="-1">
						<token-src-dn convert="false" length="-1"/>
					</token-parse-dn>
				</arg-string>
			</do-set-local-variable>
		</actions>
	</rule>
	<rule>
		<description>afSupplierSubClass</description>
		<comment xml:space="preserve">A direct SQL statment that populates the vfSupplierSubClass attribute with the possible multiple values from the query.</comment>
		<conditions>
			<or>
				<if-local-variable name="lv-usergid" op="available"/>
			</or>
		</conditions>
		<actions>
			<do-if>
				<arg-conditions>
					<and>
						<if-local-variable name="lv-usergid" op="available"/>
					</and>
				</arg-conditions>
				<arg-actions>
					<do-trace-message/>
				</arg-actions>
				<arg-actions>
					<do-trace-message color="brred"/>
					<do-break/>
				</arg-actions>
			</do-if>
			<do-set-local-variable name="sql-statement" scope="policy">
				<arg-string>
					<token-text xml:space="preserve">select supplier_class_nam from CORRTEST.so_iam_suppr_class c join CORRTEST.so_iam_usr_suplr_cls_xref x on x.SO_IAM_SUPPR_CLASS_GID = c.SO_IAM_SUPPR_CLASS_GID where so_iam_user_stg_gid=</token-text>
					<token-local-variable name="lv-usergid"/>
				</arg-string>
			</do-set-local-variable>
			<do-set-local-variable name="query2" scope="policy">
				<arg-node-set>
					<token-xml-parse>
						<token-text xml:space="preserve">&lt;jdbc:statement xmlns:jdbc="urn:dirxml:jdbc">&lt;jdbc:sql></token-text>
						<token-xml-serialize>
							<token-local-variable name="sql-statement"/>
						</token-xml-serialize>
						<token-text xml:space="preserve">&lt;/jdbc:sql>&lt;/jdbc:statement></token-text>
					</token-xml-parse>
				</arg-node-set>
			</do-set-local-variable>
			<do-set-local-variable name="lv-classresult" scope="policy">
				<arg-node-set>
					<token-xpath expression="query:query($srcQueryProcessor, $query2)"/>
				</arg-node-set>
			</do-set-local-variable>
			<do-for-each>
				<arg-node-set>
					<token-xpath expression="$lv-classresult//jdbc:value"/>
				</arg-node-set>
				<arg-actions>
					<do-add-dest-attr-value name="vfSupplierSubClass">
						<arg-value>
							<token-local-variable name="current-node"/>
						</arg-value>
					</do-add-dest-attr-value>
				</arg-actions>
			</do-for-each>
		</actions>
	</rule>
</policy>
}}}

!! More Information
There might be more information for this subject on one of the following:
[{ReferringPagesPlugin before='*' after='\n' }]