Spring Data JPA/Hibernate: выражения конструктора JPQL - разница между использованием «нового (..)» и его неиспользованием

Я использую JPQL и проецирую определенные возвращаемые поля в класс, отличный от Entity. Я могу добиться этого, используя как минимум следующие два способа в JPQL с EntityManger (em в коде): -

@Test
void testWithoutNew() {
    List<OneNew> l = em.createQuery("SELECT o.field, f.field FROM One o JOIN o.manyForeignKey f", OneNew.class).getResultList();
    System.out.println(l);
    
}

@Test
void testWithNew() {
    List<OneNew> l2 = em.createQuery("SELECT new com.test.OneNew(o.field, f.field) FROM One o JOIN o.manyForeignKey f", OneNew.class).getResultList();
    System.out.println(l2);
}

Какой из этих способов предпочтительнее и в чем разница между ними?

Каков предполагаемый способ достижения этой функциональности? И когда вам следует предпочесть один подход другому?

Класс, на который я проецирую результаты:

@ToString
@AllArgsConstructor
class OneNew {
    private String field;
    private String joinedTablesField;
}

И мои сущности: -

@Entity
@Getter
@Setter
@ToString
public class One {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long oneId;
    
    private String field;
    private String fieldNotInProjection;
    
    @OneToMany
    @JoinColumn(name = "one_id")
    private List<ManyForeignKey> manyForeignKey;
    
}

@Entity
@Getter
@Setter
@ToString
public class ManyForeignKey {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long manyForeignKeyId;
    
    private String field;
    private String fieldNotInProjection;

}

Оба вышеуказанных способа работают, но когда я пытаюсь намеренно не сопоставить аргументы в конструкторе с полями, возвращаемыми в запросе, я обнаруживаю, что оба этих способа выдают разные исключения: -

если не используется синтаксис new(..): -

org.hibernate.query.QueryTypeMismatchException: Result type is 'OneNew' but the query returned a 'String'
    at org.hibernate.sql.results.internal.RowTransformerCheckingImpl.transformRow(RowTransformerCheckingImpl.java:33)
    at org.hibernate.sql.results.internal.StandardRowReader.readRow(StandardRowReader.java:102)
    at org.hibernate.sql.results.spi.ListResultsConsumer.consume(ListResultsConsumer.java:205)
    at org.hibernate.sql.results.spi.ListResultsConsumer.consume(ListResultsConsumer.java:33)
    at org.hibernate.sql.exec.internal.JdbcSelectExecutorStandardImpl.doExecuteQuery(JdbcSelectExecutorStandardImpl.java:211)
    at org.hibernate.sql.exec.internal.JdbcSelectExecutorStandardImpl.executeQuery(JdbcSelectExecutorStandardImpl.java:83)
    at org.hibernate.sql.exec.spi.JdbcSelectExecutor.list(JdbcSelectExecutor.java:76)
    at org.hibernate.sql.exec.spi.JdbcSelectExecutor.list(JdbcSelectExecutor.java:65)
    at org.hibernate.query.sqm.internal.ConcreteSqmSelectQueryPlan.lambda$new$2(ConcreteSqmSelectQueryPlan.java:139)
    at org.hibernate.query.sqm.internal.ConcreteSqmSelectQueryPlan.withCacheableSqmInterpretation(ConcreteSqmSelectQueryPlan.java:382)
    at org.hibernate.query.sqm.internal.ConcreteSqmSelectQueryPlan.performList(ConcreteSqmSelectQueryPlan.java:302)
    at org.hibernate.query.sqm.internal.QuerySqmImpl.doList(QuerySqmImpl.java:526)
    at org.hibernate.query.spi.AbstractSelectionQuery.list(AbstractSelectionQuery.java:423)
    at org.hibernate.query.Query.getResultList(Query.java:120)
    at com.test.TestDbRelationshipsApplicationTests.testWithoutNew(TestDbRelationshipsApplicationTests.java:49)
    at java.base/java.lang.reflect.Method.invoke(Method.java:568)
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)

В то время как при использовании синтаксиса new(..): -

java.lang.IllegalArgumentException: org.hibernate.query.SemanticException: Missing constructor for type 'OneNew' [SELECT new com.test.OneNew(o.field, f.field) FROM One o JOIN o.manyForeignKey f]
    at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:143)
    at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:167)
    at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:173)
    at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:860)
    at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:140)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:568)
    at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:319)
    at jdk.proxy2/jdk.proxy2.$Proxy106.createQuery(Unknown Source)
    at com.test.TestDbRelationshipsApplicationTests.testWithNew(TestDbRelationshipsApplicationTests.java:57)
    at java.base/java.lang.reflect.Method.invoke(Method.java:568)
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
Caused by: org.hibernate.query.SemanticException: Missing constructor for type 'OneNew' [SELECT new com.test.OneNew(o.field, f.field) FROM One o JOIN o.manyForeignKey f]
    at org.hibernate.query.hql.internal.SemanticQueryBuilder.visitInstantiation(SemanticQueryBuilder.java:1506)
    at org.hibernate.query.hql.internal.SemanticQueryBuilder.visitInstantiation(SemanticQueryBuilder.java:275)
    at org.hibernate.grammars.hql.HqlParser$InstantiationContext.accept(HqlParser.java:4029)
    at org.hibernate.query.hql.internal.SemanticQueryBuilder.visitSelectableNode(SemanticQueryBuilder.java:1453)
    at org.hibernate.query.hql.internal.SemanticQueryBuilder.visitSelection(SemanticQueryBuilder.java:1407)
    at org.hibernate.query.hql.internal.SemanticQueryBuilder.visitSelectClause(SemanticQueryBuilder.java:1400)
    at org.hibernate.query.hql.internal.SemanticQueryBuilder.visitQuery(SemanticQueryBuilder.java:1249)
    at org.hibernate.query.hql.internal.SemanticQueryBuilder.visitQuerySpecExpression(SemanticQueryBuilder.java:1035)
    at org.hibernate.query.hql.internal.SemanticQueryBuilder.visitQuerySpecExpression(SemanticQueryBuilder.java:275)
    at org.hibernate.grammars.hql.HqlParser$QuerySpecExpressionContext.accept(HqlParser.java:2132)
    at org.hibernate.query.hql.internal.SemanticQueryBuilder.visitSimpleQueryGroup(SemanticQueryBuilder.java:1020)
    at org.hibernate.query.hql.internal.SemanticQueryBuilder.visitSimpleQueryGroup(SemanticQueryBuilder.java:275)
    at org.hibernate.grammars.hql.HqlParser$SimpleQueryGroupContext.accept(HqlParser.java:2003)
    at org.hibernate.query.hql.internal.SemanticQueryBuilder.visitSelectStatement(SemanticQueryBuilder.java:490)
    at org.hibernate.query.hql.internal.SemanticQueryBuilder.visitStatement(SemanticQueryBuilder.java:449)
    at org.hibernate.query.hql.internal.SemanticQueryBuilder.buildSemanticModel(SemanticQueryBuilder.java:322)
    at org.hibernate.query.hql.internal.StandardHqlTranslator.translate(StandardHqlTranslator.java:71)
    at org.hibernate.query.internal.QueryInterpretationCacheStandardImpl.createHqlInterpretation(QueryInterpretationCacheStandardImpl.java:145)
    at org.hibernate.query.internal.QueryInterpretationCacheStandardImpl.resolveHqlInterpretation(QueryInterpretationCacheStandardImpl.java:132)
    at org.hibernate.internal.AbstractSharedSessionContract.interpretHql(AbstractSharedSessionContract.java:802)
    at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:852)
    ... 11 more