About join

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Manual
9

SELECT clause (JPQL / Criteria API)

can be added to the SELECT clause by using a bound JOIN variable in the FROM clause. Nested path expressions
Manual
9

Online Backup [2019-08-09]

.join(); // Wait until the backup is completed.     // Do something with the backup (e.g. upload
Manual
9

Online Backup [2019-08-10]

);     Thread backupThread = backupQuery.getSingleResult();     backupThread.join(); // Wait
Manual
9

Online Backup

);     Thread backupThread = backupQuery.getSingleResult();     backupThread.join(); // Wait
JPA Doc
9

javax.persistence.criteria.JoinType

, Comparable Defines the three types of joins. Right outer joins and right outer fetch joins are not required to be supported in Java Persistence 2.0. Applications that use RIGHT join types will not be portable. Since: JPA 2.0 JoinType INNER Inner join. Inner join. Since: JPA 2.0 JoinType
JPA Doc
9

javax.persistence.PrimaryKeyJoinColumn

get methods) Specifies a primary key column that is used as a foreign key to join to another table. It is used to join the primary table of an entity subclass in the JOINED mapping strategy to the primary table of its superclass; it is used within a SecondaryTable annotation to join a secondary table
JPA Doc
8

javax.persistence.AssociationOverride

, the joinColumns element is used. If the relationship mapping uses a join table, the joinTable element must be specified to override the mapping of the join table and/or its join columns. Example 1: Overriding ... See Also: Embedded Embeddable MappedSuperclass AttributeOverride JoinColumn[] joinColumns The join
JPA Doc
8

javax.persistence.JoinTable

the mapping of associations. It is specified on the owning side of an association. A join table ... -to-one relationships, and one-to-one associations (both bidirectional and unidirectional). When a join table ... of the join table is assumed to be the table names of the associated primary tables concatenated
JPA Doc
8

JoinColumn.name

column. The table in which it is found depends upon the context. If the join is for a OneToOne or ... of the source entity or embeddable. If the join is for a unidirectional OneToMany mapping using a foreign key mapping strategy, the foreign key is in the table of the target entity. If the join
JPA Doc
7

MapKeyJoinColumn.table

that contains the foreign key column. If the join is for a map key for an element collection, the foreign key column is in the collection table for the map value. If the join is for a map key for a ManyToMany entity relationship or for a OneToMany entity relationship using a join table, the foreign