File	Doc	Category	Size	Date	Package
JoinColumn.java	API Doc	Glassfish v2 API	5434	Fri May 04 22:34:06 BST 2007	javax.persistence

JoinColumn

Example:

@ManyToOne
@JoinColumn(name="ADDR_ID")
public Address getAddress() { return address; }

Fields Summary

Constructors Summary

Methods Summary
java.lang.String	columnDefinition() (Optional) The SQL fragment that is used when generating the DDL for the column. Defaults to the generated SQL for the column.
boolean	insertable() (Optional) Whether the column is included in SQL INSERT statements generated by the persistence provider.
java.lang.String	name() (Optional) The name of the foreign key column. The table in which it is found depends upon the context. If the join is for a OneToOne or Many- ToOne mapping, the foreign key column is in the table of the source entity. If the join is for a ManyToMany, the foreign key is in a join table. Default (only applies if a single join column is used): The concatenation of the following: the name of the referencing relationship property or field of the referencing entity; "_"; the name of the referenced primary key column. If there is no such referencing relationship property or field in the entity, the join column name is formed as the concatenation of the following: the name of the entity; "_"; the name of the referenced primary key column.
boolean	nullable() (Optional) Whether the foreign key column is nullable.
java.lang.String	referencedColumnName() (Optional) The name of the column referenced by this foreign key column. When used with relationship mappings, the referenced column is in the table of the target entity. When used inside a JoinTable annotation, the referenced key column is in the entity table of the owning entity, or inverse entity if the join is part of the inverse join definition. Default (only applies if single join column is being used): The same name as the primary key column of the referenced table.
java.lang.String	table() (Optional) The name of the table that contains the column. If a table is not specified, the column is assumed to be in the primary table of the applicable entity.
boolean	unique() (Optional) Whether the property 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.
boolean	updatable() (Optional) Whether the column is included in SQL UPDATE statements generated by the persistence provider.