如何对多个对象使用drools特性
我有一组Drools规则,如果我向Drools引擎添加一个事实,那么这些规则可以正常工作;如果我添加两个事实,那么这些规则只应用于第一个事实。如何使规则集适用于多个事实 我要指出的事实是:如何对多个对象使用drools特性,drools,Drools,我有一组Drools规则,如果我向Drools引擎添加一个事实,那么这些规则可以正常工作;如果我添加两个事实,那么这些规则只应用于第一个事实。如何使规则集适用于多个事实 我要指出的事实是: @Traitable public class Policy { private String postalCode; private String houseHold; private BigDecimal grossPremium; public Policy(Stri
@Traitable
public class Policy {
private String postalCode;
private String houseHold;
private BigDecimal grossPremium;
public Policy(String postalCode, String houseHold) {
this.postalCode = postalCode;
this.houseHold = houseHold;
}
}
我的规则集:
import java.math.BigDecimal;
declare trait PolicyWithFactors
policy : Policy
postalCodeFactor : Double
houseHoldFactor : Double
end
rule rule1
when
$f : PolicyWithFactors(policy.postalCode == "1000", postalCodeFactor == null)
then
System.out.println("Running rule1 for " + $f.getPolicy().getHouseHold() + " and " + $f.getPolicy().getPostalCode());
modify($f) { setPostalCodeFactor(20.0); }
end
rule rule2
when
$p : Policy()
not PolicyWithFactors()
then
System.out.println("Running rule2 for " + $p.getHouseHold() + " and " + $p.getPostalCode());
PolicyWithFactors $pwf = don($p, PolicyWithFactors.class);
modify ($pwf) { setPolicy($p); }
end
rule rule3
when
$p : Policy(houseHold == "single")
$f : PolicyWithFactors(houseHoldFactor == null)
then
System.out.println("Running rule3 for " + $p.getHouseHold() + " and " + $p.getPostalCode());
modify($f) { setHouseHoldFactor(10.0); }
end
rule rule4
when
$p : Policy(grossPremium == null)
$f : PolicyWithFactors(policy == $p, $pcf : postalCodeFactor != null, $hhf : houseHoldFactor != null)
then
System.out.println("Running rule4 for " + $pcf + " and " + $hhf);
BigDecimal $gp = new BigDecimal($pcf * $hhf);
modify($p) { setGrossPremium($gp); }
end
rule rule5
when
$p : Policy(houseHold == "family")
$f : PolicyWithFactors(houseHoldFactor == null)
then
System.out.println("Running rule5 for " + $p.getHouseHold() + " and " + $p.getPostalCode());
modify($f) { setHouseHoldFactor(15.0); }
end
失败的测试用例:
public class RuleTest {
@Test
public void test() {
KieServices kieServices = KieServices.Factory.get();
KieContainer kieContainer = kieServices.getKieClasspathContainer();
KieSession kieSession = kieContainer.newKieSession();
Policy policy1 = new Policy("1000", "single");
kieSession.insert(policy1);
Policy policy2 = new Policy("1000", "family");
kieSession.insert(policy2);
kieSession.fireAllRules(50);
assertThat(policy1.getGrossPremium(), is(new BigDecimal("200")));
assertThat(policy2.getGrossPremium(), is(new BigDecimal("300")));
}
}
罪魁祸首是规则2。只要工作内存中有一个
PolicyWithFactors
,它就不会触发
rule rule2
when
$p : Policy()
not PolicyWithFactors( policy == $p)
then ... end
我还没有试着理解其余的所有内容,但请检查此约束是否应出现在所有后续规则中,即将用一份保单与一份保单的系数进行匹配。它现在计算两次第一次保费。以下是输出:针对单个和1000个运行规则运行规则1针对单个和1000个运行规则2针对系列和1000个运行规则1针对单个和1000个运行规则3针对单个和1000个运行规则4针对20.0和10.0运行规则4已解决。需要从$f.policy而不是$p读取值