LDAP-UX Client Services B.05.00 Administrator's Guide

7.5.5 Defining directory-specific information
Attribute type and object class definitions can be extended with directory-specific information
using the <dsSpecific> tag. This is useful to maintain a single schema definition file for
different types and versions of LDAP directory servers.
7.5.5.1 Example of defining directory-specific information in the attribute type definition
This section takes an example to illustrate how directory-specific information can be specified
in a single attribute type definition to support HP-UX Directory Server, Redhat Directory Server,
and Windows Active Directory Server definitions simultaneously.
The following is an example of the attribute type definition with directory-specific information
using the <dsSpecific> tag:
Line 1: <attributeTypeDefinition>
Line 2: <oid>1.23.456.7.89101112.1.314.1.51.6<oid>
Line 3: <name>sampleAttribute</name>
Line 4: <displayName vendor="ads">
LINE 5: versionGreaterOrEqual="2003">my-sample-attribute</displayName>
LINE 6: <equlaity>caseIgnoreMatch</equality>
Line 7: <syntax>1.3.6.1.4.1.1466.115.121.1.15</syntax>
Line 8: <dsSpecific vendor="rhds" versionGreaterorEqual="6.2"
Line 9: versionLessThan="7.1"
Line 10: <field attr="X-ORIGIN">'Custom Schema'</field>
Line 11: </dsSpecific>
Line 12: <dsSpecific vendor="ads" versionLessThan="2003">
Line 13: <field attr="systemOnly">TRUE</field>
Line 14: <field attr="rangeLower">256</field>
Line 15: </dsSpecific>
Line 16: <dsSpecific vendor="ads" versionGreaterOrEqual="2003">
Line 17: <field attr="rangeLower">512</field>
Line 18: </dsSpecific>
Line 19: </attributeTypeDefinition>
For the above example, on Red Hat Directory Server 6.2 through 7.0, the X-ORIGIN flag for
sampleAttribute will be set to ‘Custom Schema’ as specified in the dsSpecific field. On
Red Hat Directory Server 6.1 and earlier, or 7.1 and later, the X-ORIGIN flag for
sampleAttribute will be set to the value specified in the <schemaSource>
On Active Directory Server 2000, the sampleAttribute is added using the same display name
as specified by the <name> value, with the rangeLower attribute set to 256, and the systemOnly
attribute set to TRUE.
On Active Directory Server 2003, the sampleAttribute is added using
“my-sample-attribute” display name, with the rangeLower attribute set to 512, and
the systemOnly attribute set to FALSE, which is the default value.
Table 7-12 Directory specific information
ADS 2003ADS 2000RHDS 7.1RHDS 6.2–7.0Attribute
sampleAttributesampleAttributesampleAttributesampleAttribute
Name
my-sample-attributesampleAttribute
N/AN/ADisplay Name
N/AN/AAs Specified in
<schemaSource>
'Custom Schema'
X-ORIGIN
FALSE (default)TRUEN/AN/A
systemOnly
512256N/AN/A
rangeLower
Also, the 1.3.6.1.4.1.1466.115.121.1.15 syntax is not supported on the Windows ADS, it is mapped
to the corresponding Directory String syntax supported on Windows ADS, which is
attributeSyntax = 2.5.5.12, oMSyntax=64. See Section 7.5.7 (page 315) for details.
7.5 Schema extension utility 311