Package org.ow2.authzforce.core.pdp.api

Interface AttributeProvider

All Known Subinterfaces:

CloseableNamedAttributeProvider, NamedAttributeProvider

All Known Implementing Classes:

BaseNamedAttributeProvider

public interface AttributeProvider

Attribute provider used to resolve AttributeDesignatorTypes in a specific way (e.g. from a specific attribute source)

Method Summary

Modifier and Type	Method	Description
<AV extends AttributeValue> AttributeBag<AV>	get(AttributeFqn attributeFQN, Datatype<AV> datatype, EvaluationContext context)	Provides values of the attribute matching the given designator data.

Method Detail

get

<AV extends AttributeValue> AttributeBag<AV> get(AttributeFqn attributeFQN,
                                                 Datatype<AV> datatype,
                                                 EvaluationContext context)
                                          throws IndeterminateEvaluationException

Provides values of the attribute matching the given designator data. If no value found, but no other error occurred, an empty bag is returned.

Parameters:

attributeFQN - the global identifier (Category,Issuer,AttributeId) of the attribute to find

context - the request context

datatype - attribute datatype

Returns:

the result of retrieving the attribute, which will be a bag of values of type defined by returnDatatype; empty bag iff no value found and no error occurred.

Throws:

UnsupportedOperationException - attributeFQN or returnDatatype are not supported (the PDP engine should try another attribute provider if any)

IndeterminateEvaluationException - attributeFQN or returnDatatype are supported but some error occurred while trying to resolve the attribute value(s)