The Shibboleth IdP V3 software has reached its End of Life and is no longer supported. This documentation is available for historical purposes only. See the IDP4 wiki space for current documentation on the supported version.
NumberOfAttributeValuesConfiguration
- Rod Widdowson
- Scott Cantor
Overview
The NumberOfAttributeValues type (basic:NumberOfAttributeValues prior to V3.2) is a PolicyRule which returns true If the number of values for the specified attribute falls between specific limits. This can be used for sanity checking of results, for instance to refuse to release any values if not all possible values are present.
Schema Name
The NumberOfAttributeValues type is defined in the urn:mace:shibboleth:2.0:afp namespace, the schema for which can be located at http://shibboleth.net/schema/idp/shibboleth-afp.xsd
The deprecated basic:NumberOfAttributeValues type is defined in the urn:mace:shibboleth:2.0:afp:mf:basic namespace, the schema for which can be located at http://shibboleth.net/schema/idp/shibboleth-afp-mf-basic.xsd
Attributes
Three attributes must be specified:
| Name | Type | Default | Description |
|---|---|---|---|
attibuteID | String | Required | The name of the attribute whose values are to be counted |
minimum | Positive (>=0) Integer | Required | The minimum number of values allowed |
maximum | Positive (>=0) Integer | Required | The minimum number of values allowed |
The policy returns true iff the number of values is >= 'minimum' and  the number of values is  <= 'maximum'.
Child Elements
None
Example
<PolicyRequirementRule xsi:type="NumberOfAttributeValues" attributeID="uid" minimum="1" maximum="3"/>