The Shibboleth IdP V4 software has reached its End of Life and is no longer supported. This documentation is available for historical purposes only. See the IDP5 wiki space for current documentation on the supported version.
AttributeFilterScript
Namespace: urn:mace:shibboleth:2.0:metadata
Schema: http://shibboleth.net/schema/idp/shibboleth-metadata.xsd
Overview
The <AttributeFilterScript>
 element contains a script (or a reference to a script) that ultimately applies an implementation of Predicate<Attribute> to a given entity attribute. The containing filter implicitly iterates over all entity attributes in the metadata pipeline. For each entity attribute, the entity attribute is removed from the input stream if (and only if) the predicate evaluates to false.
Reference
The <AttributeFilterScript>
 element is a configuration element of type ScriptType.
Script Context
Examples
The following trivial implementation of Predicate<
Attribute>
 always returns false regardless of the input
 argument:
A trivial implementation of Predicate<Attribute>
<AttributeFilterScript>
<Script>
<![CDATA[
false;
]]>
</Script>
</AttributeFilterScript>
A more complex example might use the custom
object to help the operation.
<AttributeFilterScript>
<Script>
<![CDATA[
"use strict";
var someCondition = function(attributeValueCount) {
// Good stuff
}
var result;
// CustomObjectRef points to a <util:map> where the key is a string and the value is an 'interesting bean'
if (someCondition(input.getValues.size()) {
result = custom["myAttributePredicate"].someFunction(input);
} else {
result = custom["myOtherAttributePredicate"].someOtherFunction(input);
}
result;
]]>
</Script>
</AttributeFilterScript>
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