org.kuali.rice.kew.rule
Class MetaRuleExpression

java.lang.Object
  org.kuali.rice.kew.rule.BSFRuleExpression
      org.kuali.rice.kew.rule.AccumulatingBSFRuleExpression
          org.kuali.rice.kew.rule.MetaRuleExpression

All Implemented Interfaces:

RuleExpression

Direct Known Subclasses:

KRAMetaRuleExpression

public class MetaRuleExpression
extends AccumulatingBSFRuleExpression

Expression implementation for "meta rules". A "meta rule" consists of a sequence of subordinate rule evaluations each processed according to an associated modifier:

next

proceed with rule evaluation

true

if this rule evaluates to true, then return the responsibilities associated with the rule

false

if this rule evaluates to false, then return the responsibilities associated with the rule

E.g.

bizRule1: next; bizRule2: true; bizRule3: false

Author:

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

Nested Class Summary

Nested classes/interfaces inherited from class org.kuali.rice.kew.rule.BSFRuleExpression

BSFRuleExpression.WorkflowRuleAPI

Field Summary

private static org.apache.log4j.Logger

LOG

Constructor Summary

MetaRuleExpression()

Method Summary

RuleExpressionResult	evaluate(Rule rule, RouteContext context) Performs an evaluation and returns a list of 0 or more RuleResponsibilitys to which to dispatch action requests
private RuleExpressionResult	evaluateBuiltinExpression(String expression, Rule rule, RouteContext context) Evaluates the builtin "meta" rule expression

Methods inherited from class org.kuali.rice.kew.rule.AccumulatingBSFRuleExpression

declareBeans

Methods inherited from class org.kuali.rice.kew.rule.BSFRuleExpression

parseLang

Methods inherited from class java.lang.Object

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

Field Detail

LOG

private static final org.apache.log4j.Logger LOG

Constructor Detail

MetaRuleExpression

public MetaRuleExpression()

Method Detail

evaluate

public RuleExpressionResult evaluate(Rule rule,
                                     RouteContext context)
                              throws WorkflowException

Description copied from interface: RuleExpression

Performs an evaluation and returns a list of 0 or more RuleResponsibilitys to which to dispatch action requests

Specified by:

evaluate in interface RuleExpression

Overrides:

evaluate in class BSFRuleExpression

Parameters:

rule - the rule that this rule expression applies to

context - the RouteContext under which the expression is being evaluated

Returns:

the result of the rule evaluation

Throws:

WorkflowException

evaluateBuiltinExpression

private RuleExpressionResult evaluateBuiltinExpression(String expression,
                                                       Rule rule,
                                                       RouteContext context)
                                                throws WorkflowException

Evaluates the builtin "meta" rule expression

Parameters:

expression - the builtin meta rule expression

rule - the rule

context - the route context

Returns:

RuleExpressionResult the result

Throws:

WorkflowException