무한 유효성 검사 루프

내 Roo 모델에 대한 유효성 검사기가 있습니다.무한 유효성 검사 루프

오류를 발견하면 (false를 반환하면) 예상대로 작동합니다. 처음과 마지막 라인이 동일한 지

at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForDefaultGroup(ValidatorImpl.java:387) 
at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForCurrentGroup(ValidatorImpl.java:351) 
at org.hibernate.validator.internal.engine.ValidatorImpl.validateInContext(ValidatorImpl.java:303) 
at org.hibernate.validator.internal.engine.ValidatorImpl.validate(ValidatorImpl.java:133) 
at org.hibernate.cfg.beanvalidation.BeanValidationEventListener.validate(BeanValidationEventListener.java:136) 
at org.hibernate.cfg.beanvalidation.BeanValidationEventListener.onPreInsert(BeanValidationEventListener.java:94) 
at org.hibernate.action.internal.EntityInsertAction.preInsert(EntityInsertAction.java:181) 
at org.hibernate.action.internal.EntityInsertAction.execute(EntityInsertAction.java:81) 
at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:377) 
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:369) 
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:286) 
at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:339) 
at org.hibernate.event.internal.DefaultAutoFlushEventListener.onAutoFlush(DefaultAutoFlushEventListener.java:62) 
at org.hibernate.internal.SessionImpl.autoFlushIfRequired(SessionImpl.java:1205) 
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1262) 
at org.hibernate.internal.QueryImpl.list(QueryImpl.java:101) 
at org.hibernate.ejb.QueryImpl.getSingleResult(QueryImpl.java:283) 
at com.foo.domain.validate.UniqueNameValidator.isValid(UniqueNameValidator.java:30) 
at com.foo.domain.validate.UniqueNameValidator.isValid(UniqueNameValidator.java:1) 
at org.hibernate.validator.internal.engine.ConstraintTree.validateSingleConstraint(ConstraintTree.java:308) 
at org.hibernate.validator.internal.engine.ConstraintTree.validateConstraints(ConstraintTree.java:180) 
at org.hibernate.validator.internal.engine.ConstraintTree.validateConstraints(ConstraintTree.java:124) 
at org.hibernate.validator.internal.metadata.core.MetaConstraint.validateConstraint(MetaConstraint.java:86) 
at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraint(ValidatorImpl.java:442) 
at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForDefaultGroup(ValidatorImpl.java:387)

참고 성공할 때

그러나, 제어기는 StackOverflowError 결과 무한 루프로 들어간다. 이 스택 추적은 스택 오버플로가 발생하기 전에 여러 번 반복됩니다.

내 UniqueNameValidator은 다음과 같습니다

public class UniqueNameValidator implements ConstraintValidator<UniqueFoo, Foo> { 
    public boolean isValid(Foo value, ConstraintValidatorContext context) { 
    TypedQuery<Long> q = ... // checks several conditions with other models in actual code 
    return q.getSingleResult() == 0; 
    } 
}

내 루 MVC 컨트롤러는 다음과 같습니다

내 모델은 다음과 같습니다

@RequestMapping(method = RequestMethod.POST, produces = "text/html") 
public String create(@Valid Foo foo, 
        BindingResult bindingResult, 
        Model uiModel, 
        HttpServletRequest httpServletRequest) { 
    if (bindingResult.hasErrors()) { 
     populateCreateForm(uiModel, foo); 
     return "foos/create"; 
    } 
    uiModel.asMap().clear(); 

    foo.persist(); 

    return Session.getStoredURI("/" + encodeUrlPathSegment(foo.getId().toString(), httpServletRequest)); 
}

@RooJavaBean 
@RooJpaActiveRecord 
@UniqueName 
public class Foo { 
    @NotNull 
    private String parentName; 
    ... 
}

내가 잘못 뭐하는 거지 ?

출처

2013-10-14 bdares

UniqueNameValidator의 쿼리로 인해 재귀 유효성 검사가 발생합니다. 필요

TypedQuery<Long> q = ... 
return q.getSingleResult() == 0;

가되게합니다 :

TypedQuery<Long> q = ... 
q.setFlushMode(FlushModeType.COMMIT); 
return q.getSingleResult() == 0;

출처

2013-10-14 20:00:49 bdares

무한 유효성 검사 루프

답변

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