Package org.kuali.rice.krms.framework.engine

Class ComparableTermBasedProposition<T>

java.lang.Object

org.kuali.rice.krms.framework.engine.ComparableTermBasedProposition<T>

Type Parameters:

T -

All Implemented Interfaces:

Proposition

Direct Known Subclasses:

CollectionOfComparablesTermBasedProposition, StringTermBasedProposition

public class ComparableTermBasedProposition<T>
extends Object
implements Proposition

An implementation of Proposition which uses a ComparisonOperator and Term

Author:

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

Constructor Summary

Constructors

Constructor	Description
ComparableTermBasedProposition(ComparisonOperator operator, org.kuali.rice.krms.api.engine.Term term, T expectedValue)	Create a ComparableTermBasedProposition with the given values

Method Summary

Modifier and Type	Method	Description
protected boolean	compare(Comparable<T> termValue)	Compares the term value w/ the expected value
PropositionResult	evaluate(org.kuali.rice.krms.api.engine.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 an empty list.
protected T	getExpectedValue()	Returns the expectedValue
boolean	isCompound()	Indicates whether this Proposition can have children.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

ComparableTermBasedProposition

public ComparableTermBasedProposition(ComparisonOperator operator,
 org.kuali.rice.krms.api.engine.Term term,
 T expectedValue)

Create a ComparableTermBasedProposition with the given values

Parameters:

operator - ComparisonOperator to set the operator to

term - Term to set the term to

expectedValue - to set the expectedValue to

Method Details

evaluate

public PropositionResult evaluate(org.kuali.rice.krms.api.engine.ExecutionEnvironment environment)

Description copied from interface: Proposition

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

Throws:

org.kuali.rice.krms.api.engine.TermResolutionException - if there is a problem resolving the Term

See Also:

• Proposition.evaluate(org.kuali.rice.krms.api.engine.ExecutionEnvironment)

compare

protected boolean compare(Comparable<T> termValue)

Compares the term value w/ the expected value

Parameters:

termValue - Comparable which makes up the ComparisonOperator.compare() left hand side object

Returns:

the boolean result of the comparison

getChildren

public List<Proposition> getChildren()

Returns an empty list. Collections.emptyList() 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:

an empty list. Collections.emptyList()

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.

getExpectedValue

protected T getExpectedValue()

Returns the expectedValue

Returns:

the expectedValue

toString

public String toString()

Overrides:

toString in class Object