javax.jdo.annotations.Join - JDO annotation
javax.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.
- Returns:
- the name of the column in the join table
- Default value:
- ""
- Since:
- JDO 2.1
Detail definition of the join column(s). This is needed for more than one join column.
- Returns:
- the join columns
- Default value:
- {}
- Since:
- JDO 2.1
Delete action to be applied to any ForeignKey on this join.
- Returns:
- the delete action
- Default value:
- javax.jdo.annotations.ForeignKeyAction.UNSPECIFIED
- Since:
- JDO 2.1
Vendor extensions.
- Returns:
- the vendor extensions
- Default value:
- {}
- Since:
- JDO 2.1
String foreignKey
Name for a generated foreign key constraint.
- Returns:
- the name of the generated foreign key constraint
- Default value:
- ""
- Since:
- JDO 2.1
String generateForeignKey
Generate or assume a foreign key constraint exists on the column or columns associated with this join. Specify "true" or "false".
- Returns:
- whether to generate or assume a foreign key constraint
- Default value:
- ""
- Since:
- JDO 2.1
String generatePrimaryKey
Generate or assume a primary key constraint exists on the column or columns associated with this join. Specify "true" or "false".
- Returns:
- whether to generate or assume a primary key constraint
- Default value:
- ""
- Since:
- JDO 2.1
String index
The name of the index to generate.
- Returns:
- the name of the index
- Default value:
- ""
- Since:
- JDO 2.1
String indexed
Whether the join column is indexed.
- Returns:
- whether the join column(s) is(are) indexed
- Default value:
- ""
- Since:
- JDO 2.1
String outer
Whether to use an outer join.
- Returns:
- whether to use an outer join
- Default value:
- ""
- Since:
- JDO 2.1
String primaryKey
Name for a generated primary key constraint.
- Returns:
- the name of the generated primary key constraint
- Default value:
- ""
- Since:
- JDO 2.1
String table
Table to join to (used when joining to secondary tables).
- Returns:
- the table
- Default value:
- ""
- Since:
- JDO 2.1
String unique
Whether the join column is unique.
- Returns:
- whether the join column(s) is(are) is unique
- Default value:
- ""
- Since:
- JDO 2.1
String uniqueKey
The name of the unique key constraint to generate.
- Returns:
- the name of the unique key constraint
- Default value:
- ""
- Since:
- JDO 2.1
