org.kuali.rice.krms.impl.provider.repository

Class SimplePropositionTypeService

java.lang.Object

org.kuali.rice.krms.impl.provider.repository.SimplePropositionTypeService

All Implemented Interfaces:

PropositionTypeService

public class SimplePropositionTypeService
extends Object
implements PropositionTypeService

A default implementation of PropositionTypeService for propositions which are composed of terms, operators, and functions. A simple proposition is self-contained and has no compound "sub" propositions. However, it's behavior is defined by the set of parameters on the PropositionDefinition.

Author:

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

Constructor Summary

Constructors

Constructor and Description
SimplePropositionTypeService()

Method Summary

Modifier and Type	Method and Description
org.kuali.rice.krms.api.engine.expression.ComparisonOperatorService	getComparisonOperatorService()
org.kuali.rice.krms.api.repository.term.TermRepositoryService	getTermRepositoryService()
Proposition	loadProposition(org.kuali.rice.krms.api.repository.proposition.PropositionDefinition propositionDefinition)
void	setComparisonOperatorService(org.kuali.rice.krms.api.engine.expression.ComparisonOperatorService comparisonOperatorService)
void	setFunctionRepositoryService(org.kuali.rice.krms.api.repository.function.FunctionRepositoryService functionRepositoryService)
void	setTermRepositoryService(org.kuali.rice.krms.api.repository.term.TermRepositoryService termRepositoryService)
void	setTypeResolver(KrmsTypeResolver typeResolver)
protected org.kuali.rice.krms.api.engine.Term	translateTermDefinition(org.kuali.rice.krms.api.repository.term.TermDefinition termDefinition)
protected Expression<Boolean>	translateToExpression(org.kuali.rice.krms.api.repository.proposition.PropositionDefinition propositionDefinition) Translates the parameters on the given proposition definition to create an expression for evaluation.

Methods inherited from class java.lang.Object

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

Constructor Detail

SimplePropositionTypeService

public SimplePropositionTypeService()

Method Detail

loadProposition

public Proposition loadProposition(org.kuali.rice.krms.api.repository.proposition.PropositionDefinition propositionDefinition)

Specified by:

loadProposition in interface PropositionTypeService

translateToExpression

protected Expression<Boolean> translateToExpression(org.kuali.rice.krms.api.repository.proposition.PropositionDefinition propositionDefinition)

Translates the parameters on the given proposition definition to create an expression for evaluation. The proposition parameters are defined in a reverse-polish notation so a stack is used for evaluation purposes.

Parameters:

propositionDefinition - the proposition definition to translate

Returns:

the translated expression for the given proposition, this expression, when evaluated, will return a Boolean.

translateTermDefinition

protected org.kuali.rice.krms.api.engine.Term translateTermDefinition(org.kuali.rice.krms.api.repository.term.TermDefinition termDefinition)

setFunctionRepositoryService

public void setFunctionRepositoryService(org.kuali.rice.krms.api.repository.function.FunctionRepositoryService functionRepositoryService)

setTypeResolver

public void setTypeResolver(KrmsTypeResolver typeResolver)

getComparisonOperatorService

public org.kuali.rice.krms.api.engine.expression.ComparisonOperatorService getComparisonOperatorService()

setComparisonOperatorService

public void setComparisonOperatorService(org.kuali.rice.krms.api.engine.expression.ComparisonOperatorService comparisonOperatorService)

getTermRepositoryService

public org.kuali.rice.krms.api.repository.term.TermRepositoryService getTermRepositoryService()

setTermRepositoryService

public void setTermRepositoryService(org.kuali.rice.krms.api.repository.term.TermRepositoryService termRepositoryService)