org.kuali.rice.krms.framework.engine.expression
Class ExpressionBasedProposition

java.lang.Object
  org.kuali.rice.krms.framework.engine.expression.ExpressionBasedProposition

All Implemented Interfaces:

Proposition

public class ExpressionBasedProposition
extends Object
implements Proposition

TODO...

Author:

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

Field Summary

private Expression<Boolean>

expression

Constructor Summary

ExpressionBasedProposition(Expression<Boolean> expression)

Method Summary

boolean	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.

Methods inherited from class java.lang.Object

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

Field Detail

expression

private final Expression<Boolean> expression

Constructor Detail

ExpressionBasedProposition

public ExpressionBasedProposition(Expression<Boolean> expression)

Method Detail

evaluate

public boolean evaluate(ExecutionEnvironment environment)

Description copied from interface: Proposition

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

Specified by:

evaluate in interface Proposition

Parameters:

environment - the ExecutionEnvironment that this Proposition is running in

Returns:

the boolean result of evaluation

getChildren

public List<Proposition> getChildren()

Description copied from interface: Proposition

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.

Specified by:

getChildren in interface Proposition

Returns:

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

isCompound

public boolean isCompound()

Description copied from interface: Proposition

Indicates whether this Proposition can have children.

Specified by:

isCompound in interface Proposition

Returns:

true if this Proposition can contain child Propositions.