99 | Left join fetch behaviour doesn't retrieve children?Hello, I'm a little bit confused about a left join fetch behaviour. In this test case, i try to fetch my 3 children using a left join fetch. But my collection is null after closing the em ... left join fetch em = emf.createEntityManager(); TypedQuery<MyEntity> query |
93 | LEFT JOIN FETCH over empty embedded collection returns no resultsFirst of all, thank you for promptly implementing JOIN FETCH over nested paths in response ... , but I attempt to LEFT JOIN FETCH all the members of a collection within a (non-existent) member ... where bList is empty, the following works (returns my instance of C): SELECT c FROM C c LEFT JOIN FETCH |
89 | multiple LEFT JOINs do not work as expected like this: SELECT DISTINCT $1 FROM Organisation $1 JOIN $1.attributeList $2 LEFT JOIN $1.parentOrg $3 LEFT JOIN $3.parentOrg $4 WHERE ((($2.name='Attribute1') AND ($2 ... , since I use LEFT Joins this query should return all organisation under the root organisation |
89 | How do I achieve a Deep Fetch using JOIN FETCH? that I can express one level of eager fetch in JPQL as follows: SELECT c FROM C JOIN FETCH c.bList WHERE c.id=:id But when I attempt to take it to the 2nd level: SELECT c FROM C JOIN FETCH c.bList JOIN FETCH c.bList.aList WHERE c.id=:id I get an error along the lines of: Invalid fetch path |
89 | LazyInitialization / join fetch descrica2_2_3_ from the User usuario0_ left outer join on area area1_ usuario0_.codigo_area = area1_.codigo left outer join on User usuario2_ usuario0_.codigo_chefe = usuario2_.codigo left outer join company empresa3_ on usuario2_.codigo_empresa = empresa3_.codigo left outer join on specialty especialid4 |
88 | Query with FETCH JOIN returns multiple results instead of one. jpqlResult = em.createQuery( "SELECT d FROM Demand d JOIN FETCH d.services WHERE d=:demand ... duplicates with DISTINCT: SELECT DISTINCT d FROM Demand d JOIN FETCH d.services WHERE d=:demand ... : SELECT d FROM Department d LEFT JOIN FETCH d.employees WHERE d.deptno = 1 "A fetch join has the same |
87 | Issue with Casting / Joins MyEntity(); entity.getEmbeddeds().put("test", new EmbeddedA); ... // Try to query using join From<MyEntity> from = criteria.from(MyEntity.class); MapJoin<?,?,?> join = from.joinMap("embeddeds"); Path<?> pathToEmbeddedAName = join.value().get("name") <-- fails with attribute "name" not found |
20 | ObjectDB Object Database Features and array elements are indexable (extremely fast JOIN queries). Map keys and values are indexable ... fetch and JPA query FETCH JOIN. Configurable JDO fetch groups. Ease of Use and Learning ObjectDB ... ). FROM (including INNER JOIN, LEFT OUTER JOIN and JOIN FETCH). WHERE (with both JPQL and JDOQL |
20 | javax.persistence.criteria.Fetchjavax.persistence.criteria Interface Fetch<Z,X> Superinterfaces: FetchParent<Z,X> Represents a join ... a fetch join to the specified attribute using an inner join. Create a fetch join to the specified attribute using an inner join. Parameters: attributeName - name of the attribute for the target |
18 | javax.persistence.criteria.FetchParent, Join, ListJoin, MapJoin, PluralJoin, Root, SetJoin Represents an element of the from clause ... a fetch join to the specified attribute using an inner join. Create a fetch join to the specified attribute using an inner join. Parameters: attributeName - name of the attribute for the target |
