About unique

71-80 of 145Refresh
JDO Doc
3

addSubquery(sub, variableDeclaration, candidateCollectionExpression, parameters)

, ordering specification, uniqueness, result specification, and grouping specification. The association
JPA Doc
3

CollectionTable.uniqueConstraints

Annotation Element javax.persistence.CollectionTable UniqueConstraint[] uniqueConstraints (Optional) Unique constraints that are to be placed on the table. These are only used if table generation is in effect. Default value: {} Since: JPA 2.0
JDO Doc
3

executeWithArray(parameters)

the filter if there exist unique values for all variables for which the filter expression evaluates to true
JPA Doc
3

GenerationType.TABLE

Enum Constant javax.persistence.GenerationType TABLE Indicates that the persistence provider must assign primary keys for the entity using an underlying database table to ensure uniqueness. Since: JPA 1.0
JPA Doc
3

getMappingFileNames()

Method javax.persistence.spi.PersistenceUnitInfo List getMappingFileNames() Returns the list of the names of the mapping files that the persistence provider must load to determine the mappings for the entity classes. The mapping files must be in the standard XML mapping format, be uniquely
JDO Doc
3

getObjectId(pc)

instance. The identity is guaranteed to be unique only in the context of the JDO PersistenceManager
JDO Doc
3

javax.jdo.PersistenceManager

of the specified JDO instance. The identity is guaranteed to be unique only in the context of the JDO
JPA Doc
3

javax.persistence.EntityManager

javax.persistence Interface EntityManager Interface used to interact with the persistence context. An EntityManager instance is associated with a persistence context. A persistence context is a set of entity instances in which for any persistent entity identity there is a unique entity instance
JPA Doc
3

javax.persistence.MapKey

other than the primary key is used as a map key then it is expected to have a uniqueness constraint
JPA Doc
3

javax.persistence.OneToOne

// On Customer class: @OneToOne(optional=false) @JoinColumn( name="CUSTREC_ID", unique