Validation failed for query for method public abstract java.util.List

Question

I have a basic SpringBoot app. using Spring Initializer, JPA, embedded Tomcat, Thymeleaf template engine, and package as an executable JAR file. The version of SpringBoot is 2.0.1.RELEASE. I've created a class repository that extends from CrudRepository with this method

@Query("select us.priceAlertsTapas.tapa from User us left join us.priceAlertsTapas  pat left join pat.tapa tapa where pat.priceAlert = ?1")
    List<Tapa> tapasByUserPriceAlert (PriceAlert pa);

But when I init the project I got this error:

Validation failed for query for method public abstract java.util.List



    at org.springframework.data.jpa.repository.query.SimpleJpaQuery.validateQuery(SimpleJpaQuery.java:93)
    at org.springframework.data.jpa.repository.query.SimpleJpaQuery.<init>(SimpleJpaQuery.java:63)
    at org.springframework.data.jpa.repository.query.JpaQueryFactory.fromMethodWithQueryString(JpaQueryFactory.java:76)
    at org.springframework.data.jpa.repository.query.JpaQueryFactory.fromQueryAnnotation(JpaQueryFactory.java:56)
    at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$DeclaredQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:139)
    at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateIfNotFoundQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:206)
    at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$AbstractQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:79)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.lookupQuery(RepositoryFactorySupport.java:553)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.lambda$mapMethodsToQuery$1(RepositoryFactorySupport.java:546)
    at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
    at java.util.Iterator.forEachRemaining(Iterator.java:116)
    at java.util.Collections$UnmodifiableCollection$1.forEachRemaining(Collections.java:1049)
    at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
    at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
    at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
    at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
    at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
    at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.mapMethodsToQuery(RepositoryFactorySupport.java:548)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.lambda$new$0(RepositoryFactorySupport.java:538)
    at java.util.Optional.map(Optional.java:215)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.<init>(RepositoryFactorySupport.java:538)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:317)
    at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.lambda$afterPropertiesSet$3(RepositoryFactoryBeanSupport.java:287)
    at org.springframework.data.util.Lazy.getNullable(Lazy.java:141)
    at org.springframework.data.util.Lazy.get(Lazy.java:63)
    at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:290)
    at org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.afterPropertiesSet(JpaRepositoryFactoryBean.java:102)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1761)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1698)
    ... 47 common frames omitted
Caused by: java.lang.NullPointerException: null
    at org.hibernate.hql.internal.ast.HqlSqlWalker.createFromJoinElement(HqlSqlWalker.java:424)
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.joinElement(HqlSqlBaseWalker.java:3931)
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElement(HqlSqlBaseWalker.java:3717)
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElementList(HqlSqlBaseWalker.java:3595)
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromClause(HqlSqlBaseWalker.java:720)
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:576)
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:313)
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:261)
    at org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:266)
    at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:189)
    at org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:141)
    at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:115)
    at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:77)
    at org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:153)
    at org.hibernate.internal.AbstractSharedSessionContract.getQueryPlan(AbstractSharedSessionContract.java:553)
    at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:662)
    at org.hibernate.internal.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:23)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:350)
    at com.sun.proxy.$Proxy105.createQuery(Unknown Source)
    at org.springframework.data.jpa.repository.query.SimpleJpaQuery.validateQuery(SimpleJpaQuery.java:87)
    ... 76 common frames omitted

With the solution proposed I got the same error

With this query I have also the same error (?!?)

 @Query("select us.priceAlertsTapas.tapa from User us ")

Here the User object:

@Entity
@Table(name="t_user")
public class User implements Serializable, UserDetails {

...

@ManyToMany
    @JoinTable(
        name="t_user_price_alert_tapa",
        joinColumns=@JoinColumn(name="user_id", referencedColumnName="id"),
        inverseJoinColumns=@JoinColumn(name="price_alert_tapa_id", referencedColumnName="id"))
    private Set<PriceAlertTapa> priceAlertsTapas = new HashSet<>();
}

and

@Entity
@Table(name="t_price_alert")
public class PriceAlert implements Serializable {

    /**
     * 
     */
    private static final long serialVersionUID = 1L;


    public PriceAlert(int id) {
        super();
        this.id = id;
    }


    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Integer id; 

    private String name;

...

    }

and

@Entity
@Table(name="t_price_alert_tapa")
public class PriceAlertTapa  implements Serializable {

    /**
     * 
     */
    private static final long serialVersionUID = 1L;


    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private long id;


    public PriceAlertTapa(PriceAlert priceAlert, Tapa tapa) {
        super();
        this.tapa = tapa;
        this.priceAlert = priceAlert;
    }

    private Tapa tapa;

    private PriceAlert priceAlert;
..
}

Answer 1

I was getting this error as I was using table name in @Query(), but you have to use class name in @Query():

Incorrect:

@Transactional
@Modifying
@Query("from SHIPPING_DOC e where e.fulfillmentId in ?1")
List<ShippingDocumentsJsonEntity> deleteByFulfillmentIdIn(List<String> fulfillmentIds);

Correct:

@Transactional
@Modifying
@Query("from ShippingDocumentsJsonEntity e where e.fulfillmentId in ?1")
List<ShippingDocumentsJsonEntity> deleteByFulfillmentIdIn(List<String> fulfillmentIds);

Answer 2

Since priceAlertsTapas is Set you can't use dot-path.

@Query("select us.priceAlertsTapas.tapa from User us")

First you need to join it

@Query("select pat.tapa from User us join us.priceAlertsTapas pat")

Answer 3

You have no reason to use a left (outer) join if your are only interested in the rightmost entity - although I'm not sure that this is the reason for which the validation of your query fails.

I would try this:

@Query("select tapa fom PriceAlertsTapas pat join pat.tapa tapa where pat.priceAlert = ?1")
List<Tapa> tapasByUserPriceAlert (PriceAlert pa);

If a given "tapa" can have multiple association to a "price alert" (eg one per user) then you will find it multiple times in your return List. The solution is either to change the return type to Set<Tapa> or to use "select distinct...." in your query.

If, on the other hand, your PriceAlertsTapas is a simple many-to-many association, it might be better to use the @ManyToMany JPA annotation, eventually with @JoinTable. See, for example, here.