2 | ManyToOne.optionalAnnotation Element javax.persistence.ManyToOne boolean optional (Optional) Whether the association is optional. If set to false then a non-null relationship must always exist. Default value: true Since: JPA 1.0 |
2 | setRollbackOnly()Method javax.persistence.EntityTransaction void setRollbackOnly() Mark the current resource transaction so that the only possible outcome of the transaction is for the transaction to be rolled back. Throws: IllegalStateException - if isActive() is false Since: JPA 1.0 |
2 | rollback()Method javax.persistence.EntityTransaction void rollback() Roll back the current resource transaction. Throws: IllegalStateException - if isActive() is false PersistenceException - if an unexpected error condition is encountered Since: JPA 1.0 |
2 | commit()Method javax.persistence.EntityTransaction void commit() Commit the current resource transaction, writing any unflushed changes to the database. Throws: IllegalStateException - if isActive() is false RollbackException - if the commit fails Since: JPA 1.0 |
2 | getRollbackOnly()Method javax.persistence.EntityTransaction boolean getRollbackOnly() Determine whether the current resource transaction has been marked for rollback. Returns: boolean indicating whether the transaction has been marked for rollback Throws: IllegalStateException - if isActive() is false Since: JPA 1.0 |
2 | distinct(distinct)Method javax.persistence.criteria.CriteriaQuery CriteriaQuery<T> distinct( boolean distinct ) Specify whether duplicate query results will be eliminated. A true value will cause duplicates to be eliminated. A false value will cause duplicates to be retained. If distinct has not been specified |
0 | Join.generateForeignKeyAnnotation Element javax.jdo.annotations.Join 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 |
0 | Join.generatePrimaryKeyAnnotation Element javax.jdo.annotations.Join 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 |
0 | isTransactional(pc) nontransactional instances return false. Parameters: pc - the calling PersistenceCapable instance |
0 | isPersistent(pc)Method javax.jdo.spi.StateManager boolean isPersistent( PersistenceCapable pc ) Tests whether this object is persistent. Instances whose state is stored in the data store return true. Transient instances return false. Parameters: pc - the calling PersistenceCapable instance Returns: true |
