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

Class BaseFirstOrderFunctionCall.EagerEval<RETURN_T extends Value>

java.lang.Object

org.ow2.authzforce.core.pdp.api.func.BaseFirstOrderFunctionCall<RETURN_T>

org.ow2.authzforce.core.pdp.api.func.BaseFirstOrderFunctionCall.EagerEval<RETURN_T>

Type Parameters:

RETURN_T - function return type

All Implemented Interfaces:

FirstOrderFunctionCall<RETURN_T>, FunctionCall<RETURN_T>

Direct Known Subclasses:

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

Enclosing class:

BaseFirstOrderFunctionCall<RETURN extends Value>

public abstract static class BaseFirstOrderFunctionCall.EagerEval<RETURN_T extends Value>
extends BaseFirstOrderFunctionCall<RETURN_T>

Function call, for FirstOrderFunctions requiring eager (aka greedy) evaluation of ALL their arguments' expressions to actual values, before the function can be evaluated. This is the case of most functions in XACML. Exceptions (functions not using eager evaluation) are logical functions for instance, such as 'or', 'and', 'n-of'. Indeed, these functions can return the final result before all arguments have been evaluated, e.g. the 'or' function returns True as soon as one of the arguments return True, regardless of the remaining arguments.

Nested Class Summary

Nested classes/interfaces inherited from class org.ow2.authzforce.core.pdp.api.func.BaseFirstOrderFunctionCall

BaseFirstOrderFunctionCall.EagerBagEval<RETURN_T extends Value,PARAM_BAG_ELEMENT_T extends AttributeValue>, BaseFirstOrderFunctionCall.EagerEval<RETURN_T extends Value>, BaseFirstOrderFunctionCall.EagerMultiPrimitiveTypeEval<RETURN_T extends Value>, BaseFirstOrderFunctionCall.EagerPartlyBagEval<RETURN_T extends Value,PRIMITIVE_PARAM_T extends AttributeValue>, BaseFirstOrderFunctionCall.EagerSinglePrimitiveTypeEval<RETURN_T extends Value,PARAM_T extends AttributeValue>

Field Summary

Fields

Modifier and Type	Field	Description
protected List<Expression<?>>	argExpressions
protected String	functionId
protected String	indeterminateArgMessage
protected int	numOfSameTypePrimitiveParamsBeforeBag
protected int	totalArgCount

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	EagerEval(FirstOrderFunctionSignature<RETURN_T> functionSignature, List<Expression<?>> args, Datatype<?>... remainingArgTypes)	Instantiates Function FirstOrderFunctionCall

Method Summary

Methods inherited from class org.ow2.authzforce.core.pdp.api.func.BaseFirstOrderFunctionCall

evaluate, evaluate, getReturnType

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.ow2.authzforce.core.pdp.api.func.FirstOrderFunctionCall

evaluate

Field Detail

argExpressions

protected final List<Expression<?>> argExpressions

indeterminateArgMessage

protected final String indeterminateArgMessage

totalArgCount

protected final int totalArgCount

numOfSameTypePrimitiveParamsBeforeBag

protected final int numOfSameTypePrimitiveParamsBeforeBag

functionId

protected final String functionId

Constructor Detail

EagerEval

protected EagerEval(FirstOrderFunctionSignature<RETURN_T> functionSignature,
                    List<Expression<?>> args,
                    Datatype<?>... remainingArgTypes)
             throws IllegalArgumentException

Instantiates Function FirstOrderFunctionCall

Parameters:

functionSignature - function signature

args - arguments' Expressions

remainingArgTypes - types of arguments following args, and of which the actual Expression is unknown at this point, but will be known and passed at evaluation time as remainingArgs parameter to BaseFirstOrderFunctionCall.evaluate(EvaluationContext, boolean, AttributeValue...), then FirstOrderFunctionCall.evaluate(EvaluationContext, AttributeValue...).

Throws:

IllegalArgumentException - if one of remainingArgTypes is a bag type.