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)

See Also:

PropositionResult

Method Summary

Modifier and Type	Method and Description
PropositionResult	evaluate(ExecutionEnvironment environment) Evaluates this proposition -- and in the case of Propositions containing children, those children as well -- and returns the boolean result;
List<Proposition>	getChildren() 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)

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()

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.