Package com.aquima.interactions.rule

Interface IConstraint

All Superinterfaces:

IBusinessRule, Serializable

All Known Implementing Classes:

ConstraintRule, FailedConstraint, XmlConstraint, XmlConstraint

public interface IConstraint
extends IBusinessRule

Interface for a constraint type business rule. A constraint is used to determine the sub-set of values that are valid within the context.

Since:

5.0

Author:

O. Kerpershoek

Method Summary

Modifier and Type	Method	Description
List<IPrimitiveValue>	narrow(InferenceContext context, List<IPrimitiveValue> currentValues)	This method should narrow the current set of values and return a new set containing only the values that are valid for this constraint.

Methods inherited from interface com.aquima.interactions.rule.IBusinessRule

getName, getRuleGroupNames, getSourceScopeObjects, getTargetAttributes

Method Details

narrow

List<IPrimitiveValue> narrow(InferenceContext context,
 List<IPrimitiveValue> currentValues)

This method should narrow the current set of values and return a new set containing only the values that are valid for this constraint. This method is not allowed to add any value that is not present in the original set of current values.

Parameters:

context - InferenceContext

currentValues - Collection

Returns:

List containing the subset of current values that are valid for this constraint.

Throws:

RuleEngineException - This exception is thrown when the rule failed due to an error.