Package com.aquima.interactions.rule.constraint

Class ConstraintEngine

java.lang.Object

com.aquima.interactions.rule.constraint.ConstraintEngine

public class ConstraintEngine
extends Object

The constraint engine contains the logic to narrow domains of attributes by applying constraints to them.

Since:

5.0

Author:

O. Kerpershoek

Constructor Summary

Constructors

Constructor	Description
ConstraintEngine(IRuleGraph graph)	Constructs a constraint engine using an initialized rule graph.

Method Summary

Modifier and Type	Method	Description
IPrimitiveValue[]	evaluateDomain(IProfile profile, ValueReference attribute, IDomainDefinition domain)	This method will determine the set of valid values for the specified attribute.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConstraintEngine

public ConstraintEngine(IRuleGraph graph)

Constructs a constraint engine using an initialized rule graph.

Parameters:

graph - The rule graph that should be used to initialize the constraint engine with.

Method Detail

evaluateDomain

public IPrimitiveValue[] evaluateDomain(IProfile profile,
                                        ValueReference attribute,
                                        IDomainDefinition domain)
                                 throws MetaModelException,
                                        RuleEngineException,
                                        ProfileException

This method will determine the set of valid values for the specified attribute.

Parameters:

profile - The profile containing the current state.

attribute - Reference to the attribute for which the valid set of values should be determined.

domain - The definition of the domain of which the valid values should be determined.

Returns:

Array containing all the valid values for the specified attribute.

Throws:

MetaModelException - This exception is thrown when the reference does not contain a valid entity or attribute name.

RuleEngineException - This exception is thrown when the constraint(s) failed evaluation.

ProfileException - This exception is thrown when the reference refers to an unknown or invalid instance.