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[英]Optaplanner - Drools rules List<> memberOf List<>?
[英](Drools) How to loop through a list to check if an item is a memberOf another list
我想检查诊断代码列表中的任何项目是否存在于另一个列表中。
我是流口水的新手,并且仍在尝试确定最佳方法,因为当前的方法不起作用(output 说 null 当它应该返回“真”时)。
Java POJO
public class EligibilityDomainObject {
private List<String> listOfString;
public List<String> getListOfString() {
return listOfString;
}
public void setListOfString(List<String> listOfString) {
this.listOfString = listOfString;
}
public void addString(String value) {
if (listOfString == null) {
listOfString = new ArrayList<String>();
}
listOfString.add(value);
}
private Boolean isComplexPhysicalHealth;
public Boolean getIsComplexPhysicalHealth() {
return this.isComplexPhysicalHealth;
}
public void setIsComplexPhysicalHealth(Boolean isComplexPhysicalHealth) {
this.isComplexPhysicalHealth = isComplexPhysicalHealth;
}
流口水
rule "Problems related to social environment"
when
$eligibilityDomainObject:EligibilityDomainObject($listOfString : listOfString,
$listOfString memberOf "F77 EOO F99" )
then
$eligibilityDomainObject.setIsComplexPhysicalHealth(true);
end
主要的
public static void main(String[] args) {
SpringApplication.run(RulesEngineApplication.class, args);
try {
KieServices kieServices = KieServices.Factory.get();
KieContainer kContainer = kieServices.getKieClasspathContainer();
KieSession kSession = kContainer.newKieSession("ksession-rules");
EligibilityDomainObject eligibilityDomainObject = new EligibilityDomainObject(null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null);
eligibilityDomainObject.addString("F77");
eligibilityDomainObject.addString("F99");
System.out.println("List of diagnosis codes: "+ eligibilityDomainObject.getListOfString().toString());
kSession.insert(eligibilityDomainObject);
System.out.println("complex phys health flag: "+ eligibilityDomainObject.getIsComplexPhysicalHealth());
kSession.fireAllRules();
kSession.dispose();
} catch (Throwable t) {
t.printStackTrace();
}
}
output
诊断代码列表:[Z590、E0800]
复杂的物理健康标志:null
预计 output
诊断代码列表:[Z590、E0800]
复杂的物理健康标志:真
我能够使用'from'关键字解决它
rule "Problems related to social environment"
when
$eligibilityDomainObject:EligibilityDomainObject($listOfString : listOfString)
value: String(value memberOf "F77 EOO F99" ) from $listOfString
then
$eligibilityDomainObject.setIsComplexPhysicalHealth(true);
end
您的规则将对F7
和F9
行为不端。
考虑其他几种方法:
rule "Problems related to social environment"
when
$eligibilityDomainObject:EligibilityDomainObject($listOfString : listOfString)
value: String(value in ("F77", "EOO", "F99") ) from $listOfString
then
$eligibilityDomainObject.setIsComplexPhysicalHealth(true);
end
根据文档,当您可以将所有事实插入 Drools 引擎的工作 memory 或在约束表达式中使用嵌套的 object 引用时,需要“避免使用 from 元素。” 以下将导致每个 EligibilityDomainObject 仅触发一次规则,而不是每个匹配值:
import static org.apache.commons.collections4.CollectionUtils.containsAny;
rule "Problems related to social environment"
when
$eligibilityDomainObject:EligibilityDomainObject(containsAny(listOfString, "F77", "EOO", "F99"))
then
$eligibilityDomainObject.setIsComplexPhysicalHealth(true);
end
在一个 go 中收集匹配值
import static org.apache.commons.collections4.CollectionUtils.intersection;
import static com.google.common.collect.Sets.newHashSet;
rule "Problems related to social environment"
when
$eligibilityDomainObject:EligibilityDomainObject(
$values : intersection(listOfString, newHashSet("F77", "EOO", "F99")),
!$values.isEmpty())
then
$eligibilityDomainObject.setIsComplexPhysicalHealth(true);
System.out.println($values);
end
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