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JPA Doc
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javax.persistence.AttributeOverride

containing instances of an embeddable class or to a map collection whose key and/or value is an embeddable class. When AttributeOverride is applied to a map, "key." or "value." must be used to prefix the name of the attribute that is being overridden by order to specify it as part of the map key or
JPA Doc
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javax.persistence.Column

value: "" Since: JPA 1.0 boolean unique (Optional) Whether the column is a unique key. (Optional) Whether the column is a unique key. This is a shortcut for the UniqueConstraint annotation at the table level and is useful for when the unique key constraint corresponds to only a single column
JPA Doc
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javax.persistence.criteria.MapJoin

does not exist Since: JPA 2.0 Path key() Create a path expression that corresponds to the map key. Create a path expression that corresponds to the map key. Returns: path corresponding to map key
JPA Doc
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javax.persistence.EmbeddedId

key that is an embeddable class. The embeddable class must be annotated as Embeddable ... a derived primary key. If the entity has a derived primary key, the AttributeOverride annotation ... to primary key type of Employee } @Entity public class Dependent { // default
JPA Doc
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javax.persistence.JoinTable

[] inverseJoinColumns (Optional) The foreign key columns of the join table which reference the primary table of the entity that does not own the association. (Optional) The foreign key columns ... : {} Since: JPA 1.0 JoinColumn[] joinColumns (Optional) The foreign key columns of the join table
JPA Doc
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javax.persistence.MapKeyClass

javax.persistence Annotation MapKeyClass Target: Fields (including property get methods) Specifies the type of the map key for associations of type java.util.Map. The map key can be a basic type ... ManyToMany Class value (Required) The type of the map key. (Required) The type of the map key. Since: JPA 2.0
JDO Doc
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jdoCopyKeyFieldsFromObjectId(fm, oid)

 fm,   Object oid ) Copy fields to an outside consumer from the key fields in the ObjectId. This method is generated in the PersistenceCapable class to generate a call to the field manager for each key field in the ObjectId. For example, an ObjectId class that has three key fields (int id, String
JDO Doc
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jdoCopyKeyFieldsToObjectId(fm, oid)

,   Object oid ) Copy fields from an outside source to the key fields in the ObjectId. This method is generated in the PersistenceCapable class to generate a call to the field manager for each key field in the ObjectId. For example, an ObjectId class that has three key fields (int id, String name
JPA Doc
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JoinColumn.referencedColumnName

of the column referenced by this foreign key column. When used with entity relationship mappings ... with a unidirectional OneToMany foreign key mapping, the referenced column is in the table of the source entity. When used inside a JoinTable annotation, the referenced key column is in the entity
JPA Doc
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JoinColumn.unique

is a unique key. This is a shortcut for the UniqueConstraint annotation at the table level and is useful for when the unique key constraint is only a single field. It is not necessary to explicitly specify this for a join column that corresponds to a primary key that is part of a foreign key. Default value: false Since: JPA 1.0