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java.lang.Objectcom.ibm.websphere.brb.implementor.RuleMerger
Combination rule comprised of three or more rules, one of which is a merger rule. All but the merger rule are fired to get a set of results. The merger rule is then fired to arrive at a combined result. The passed in firing parameters are passed to each of the rules whose results are to be combined. All these rules must accept the same set of firing parameters. The firing parameters which are passed to the merger rule consist of the original firing parameters, followed by the result of each rule that was just fired.
Note that it is allowed to pass 0 or 1 rules whose results are to be combined. Therefore, in general, the merger rule must be prepared to handle getting no results or just one result from the rules to be combined.
Field Summary | |
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protected java.lang.String[] |
dependentRules
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Constructor Summary | |
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RuleMerger()
Parameterless constructor for RuleMerger. |
Method Summary | |
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java.lang.Object |
fire(TriggerPoint tp,
java.lang.Object target,
IRuleCopy rule,
java.lang.Object[] parms)
Given a set of rules, fires all but the first and passes the results and any input parameters to the first rule (the merger rule) for combining. |
java.lang.String |
getDescription()
The programmer's description of what the algorithm does. |
void |
init(java.lang.Object[] parms,
java.lang.String[] dependentRules,
java.lang.String userDefinedData,
IRuleCopy rule)
Initializes constants used by this rule. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
protected java.lang.String[] dependentRules
Constructor Detail |
public RuleMerger()
Method Detail |
public java.lang.Object fire(TriggerPoint tp, java.lang.Object target, IRuleCopy rule, java.lang.Object[] parms) throws BusinessRuleBeansException
fire
in interface RuleImplementor
tp
- the trigger point which is firing this rule implementor.target
- the target object of the trigger pointrule
- the rule that the implementor is running on behalf of
BusinessRuleBeansException
public java.lang.String getDescription()
getDescription
in interface RuleImplementor
public void init(java.lang.Object[] parms, java.lang.String[] dependentRules, java.lang.String userDefinedData, IRuleCopy rule) throws BusinessRuleBeansException
init
in interface RuleImplementor
parms
- the parameters needed to initialize this RuleImplementordependentRules
- the names of the dependent rules to this rule; if there are none,
null is passeduserDefinedData
- userDefinedData property from the Rulerule
- the Rule on whose behalf the rule implementor is running
BusinessRuleBeansException
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