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Forum
41

Query in JPA2 with LEFT JOIN on INNER JOIN

How write a query in JPA2 with LEFT JOIN on INNER JOIN? select a.description, a.id, p1 ... inner join profile p1 on ap1.id_profile=p1.id and p1.name='?' left join action_profile ap2 on ap2.id_action=a.id inner join profile p2 on ap2.id_profile=p2.id and p2.name='?' where a.id
JPA Doc
37

join(attribute)

Method javax.persistence.criteria.From Join join(   SingularAttribute attribute ) Create an inner join to the specified single-valued attribute. Parameters: attribute - target of the join Returns: the resulting join Since: JPA 2.0
JPA Doc
37

join(attributeName)

Method javax.persistence.criteria.From Join join(   String attributeName ) Create an inner join to the specified attribute. Parameters: attributeName - name of the attribute for the target of the join Returns: the resulting join Throws: IllegalArgumentException - if attribute of the given name does not exist Since: JPA 2.0
JPA Doc
36

join(collection)

Method javax.persistence.criteria.From CollectionJoin join(   CollectionAttribute collection ) Create an inner join to the specified Collection-valued attribute. Parameters: collection - target of the join Returns: the resulting join Since: JPA 2.0
JPA Doc
36

join(list)

Method javax.persistence.criteria.From ListJoin join(   ListAttribute list ) Create an inner join to the specified List-valued attribute. Parameters: list - target of the join Returns: the resulting join Since: JPA 2.0
JPA Doc
36

join(map)

Method javax.persistence.criteria.From MapJoin join(   MapAttribute map ) Create an inner join to the specified Map-valued attribute. Parameters: map - target of the join Returns: the resulting join Since: JPA 2.0
JPA Doc
36

join(set)

Method javax.persistence.criteria.From SetJoin join(   SetAttribute set ) Create an inner join to the specified Set-valued attribute. Parameters: set - target of the join Returns: the resulting join Since: JPA 2.0
Result
29

ObjectDB Object Database Features

(including INNER JOIN, LEFT OUTER JOIN and JOIN FETCH). WHERE (with both JPQL and JDOQL expressions ... elements are indexable (extremely fast JOIN queries). Map keys and values are indexable. Nested paths ... query FETCH JOIN. Configurable JDO fetch groups. Ease of Use and Learning ObjectDB is very simple
JPA Doc
25

javax.persistence.criteria.Fetch

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 ... > attribute) Create a fetch join to the specified collection-valued attribute using an inner join. Create
Manual
25

Paths and Types in JPQL and Criteria API

. It might be easier to understand exactly how this works by considering the equivalent JOIN query ... , Join and Join's descendants). Path Expressions The Root and Join interfaces (which are subinterfaces ... > country = query.from(Country.class); Join neighborCountry = country.join