org.kuali.rice.krms.framework.engine
Interface Proposition

All Known Implementing Classes:

CollectionOfComparablesTermBasedProposition, ComparableTermBasedProposition, CompoundProposition, ExpressionBasedProposition, StringTermBasedProposition

public interface Proposition

Interface for logical propositions that may be executed in the Engine.

Author:

Kuali Rice Team (rice.collab@kuali.org)

Method Summary

PropositionResult	evaluate(ExecutionEnvironment environment) This method evaluates this proposition -- and in the case of Propositions containing children, those children as well -- and returns the boolean result;
List<Proposition>	getChildren() This method returns the List of child Propositions that belong to this object.
boolean	isCompound() Indicates whether this Proposition can have children.

Method Detail

evaluate

PropositionResult evaluate(ExecutionEnvironment environment)

This method evaluates this proposition -- and in the case of Propositions containing children, those children as well -- and returns the boolean result;

Parameters:

environment - the ExecutionEnvironment that this Proposition is running in

Returns:

the boolean result of evaluation

getChildren

List<Proposition> getChildren()

This method returns the List of child Propositions that belong to this object. If there are no children (e.g. for simple Proposition types), this must return an empty List.

Returns:

a List containing any child Propositions that belong to this object. Must never return null.

isCompound

boolean isCompound()

Indicates whether this Proposition can have children.

Returns:

true if this Proposition can contain child Propositions.