116 | FROM clause (JPQL / Criteria API) phase, a full iteration over the Cartesian product is avoided. [INNER] JOIN As discussed above, range ... an additional type of identification variable, a join variable, which represent a more limited ... and one join variable: SELECT c1, c2 FROM Country c1 INNER JOIN c1.neighbors c2 In JPQL, JOIN |
83 | javax.persistence.criteria.Joinjavax.persistence.criteria Interface Join<Z,X> Superinterfaces: Expression<X>, FetchParent<Z,X ... , PluralJoin, SetJoin A join to an entity, embeddable, or basic type. Since: JPA 2.0 Learn how to use JPA criteria API's Join in Chapter 4 of the ObjectDB/JPA manual. Selection<X> alias(String name |
54 | Paths and Types in JPQL and Criteria API. It might be easier to understand exactly how this works by considering the equivalent JOIN query. Entity ... are represented in the JPA Criteria API by the Path interface and by its subinterfaces (From, Root, Join and Join's descendants). Path Expressions The Root and Join interfaces (which are subinterfaces |
52 | join(attribute, jt)Method javax.persistence.criteria.From Join<X,Y> join( SingularAttribute<?,Y> attribute, JoinType jt ) Create a join to the specified single-valued attribute using the given join type. Parameters: attribute - target of the join jt - join type Returns: the resulting join Since: JPA 2.0 |
52 | join(attributeName, jt)Method javax.persistence.criteria.From Join<X,Y> join( String attributeName, JoinType jt ) Create a join to the specified attribute using the given join type. Parameters: attributeName - name of the attribute for the target of the join jt - join type Returns: the resulting join Throws |
52 | join(collection, jt)Method javax.persistence.criteria.From CollectionJoin<X,Y> join( CollectionAttribute<?,Y> collection, JoinType jt ) Create a join to the specified Collection-valued attribute using the given join type. Parameters: collection - target of the join jt - join type Returns: the resulting join Since: JPA 2.0 |
52 | join(list, jt)Method javax.persistence.criteria.From ListJoin<X,Y> join( ListAttribute<?,Y> list, JoinType jt ) Create a join to the specified List-valued attribute using the given join type. Parameters: list - target of the join jt - join type Returns: the resulting join Since: JPA 2.0 |
6 | javax.jdo.annotations.Joinjavax.jdo.annotations Annotation Join Target: Classes and fields (including property get methods) Annotation for the join of a relation. Corresponds to the xml element "join". Since: JDO 2.1 String column Name of the column in the join table. Name of the column in the join table. Returns: the name |
5 | javax.jdo.annotations.Joinsjavax.jdo.annotations Annotation Joins Target: Classes Annotation for a group of joins. Since: JDO 2.1 Join[] value The join definitions used for the mapping of this type. The join definitions used for the mapping of this type. Joins for secondary tables are usually defined at the type level |
5 | Joins.valueAnnotation Element javax.jdo.annotations.Joins Join[] value The join definitions used for the mapping of this type. Joins for secondary tables are usually defined at the type level and not the field or property level. This allows multiple fields and properties to share the same join definition |
