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

Interface FunctionCall<RETURN_T extends Value>

Type Parameters:

RETURN_T - call's return type (typically the same as the internal function's)

All Known Subinterfaces:

FirstOrderFunctionCall<RETURN>

All Known Implementing Classes:

BaseFirstOrderFunctionCall, BaseFirstOrderFunctionCall.EagerBagEval, BaseFirstOrderFunctionCall.EagerEval, BaseFirstOrderFunctionCall.EagerMultiPrimitiveTypeEval, BaseFirstOrderFunctionCall.EagerPartlyBagEval, BaseFirstOrderFunctionCall.EagerSinglePrimitiveTypeEval

public interface FunctionCall<RETURN_T extends Value>

Function call. This is the recommended way of calling any BaseFunction. This is quite similar to XACML Apply except it does not include the Description field; and arguments are optimized specifically for each function by extending this class accordingly, therefore they might be quite different from original input Expressions of the Apply. In particular, if some expressions are actually static values (e.g. AttributeValue, VariableReference to AttributeValue, function applied to static values...), these expressions might be pre-compiled/pre-evaluated. For instance, a static regex parameter to regexp-match function may be pre-compiled to a regex for re-use.

Method Summary

Modifier and Type	Method	Description
RETURN_T	evaluate(EvaluationContext context)	Make the call in a given evaluation context
Datatype<RETURN_T>	getReturnType()	Get the actual return type of this call (same as the internal function's return type), used as return type for XACML Apply in PDP.

Method Detail

getReturnType

Datatype<RETURN_T> getReturnType()

Get the actual return type of this call (same as the internal function's return type), used as return type for XACML Apply in PDP.

Returns:

return type

evaluate

RETURN_T evaluate(EvaluationContext context)
           throws IndeterminateEvaluationException

Make the call in a given evaluation context

Parameters:

context - evaluation context

Returns:

result of the call

Throws:

IndeterminateEvaluationException - if any evaluation error