集合中不存在drools

如果集合没有特定对象，我需要触发规则

AuditAssignment作为问题事实提供

AuditAssignment具有requiredSkill属性

审计任务有一名财产审计员

审核员对象有一个资格列表，它是所需技能的集合

现在，我需要检查auditassignment对象中审计员的资格是否具备所需的技能

下面是我尝试过但不起作用的示例规则

rule "checkIfAuditSkillIsMatching"
    when
        $auditAssignment : AuditAssignment( $neededSkill : requiredSkill.getSkillCode())

        $auditor : Auditor( $auditorSkills : qualifications)
        not exists ( Skill ( skillCode == $neededSkill ) from $auditorSkills  )  

    then
        System.out.println( " **** " + $neededSkill);
        scoreHolder.addHardConstraintMatch(kcontext, -1 );
end

我也试过下面这个

rule "checkIfAuditSkillIsMatching"
    when

        $validAuditorCount : Number ( intValue < 1  ) from accumulate (
            $auditor : Auditor( $auditorSkills: qualifications )
            and   exists AuditAssignment( auditor == $auditor , 
                    $auditorSkills.contains(requiredSkill) )   ,
            count($auditor)

        ) 

    then
        scoreHolder.addHardConstraintMatch(kcontext, -1 );
end

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在这里，建议使用集合的属性方法来获取所需的逻辑值

rule "checkIfAuditSkillIsMatching"
when
    $auditAssignment: AuditAssignment( $neededSkill: requiredSkill.getSkillCode() )
    $auditor: Auditor( $auditorSkills: qualifications,
                       ! $auditorSkills.contains( $neededSkill ) )  
then
    //...no suitably qualified auditor
end

---

下面的配置工作正常

rule "checkIfAuditSkillIsMatching"
    when
        $auditAssignment : AuditAssignment( $neededSkill : requiredSkill ,
                    $assignedAuditor : auditor )

        $auditor : Auditor( this == $assignedAuditor , !qualifications.contains($neededSkill) ) 

    then
        scoreHolder.addHardConstraintMatch(kcontext, -1 );
end

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谢谢我将尝试这个。对不起-我觉得我没有正确地说明问题。我已经改写了这个问题