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() Is the attribute an id attribute? This method returns true if the attribute is a simple id , an embedded

() Whether the identifiable type has a single id attribute. Returns true for a simple id or embedded id; returns false

results are eliminated. A true value will cause duplicates to be eliminated. A false value

query results are eliminated. A true value will cause duplicates to be eliminated. A false value

not the entity should be cached. Default: true Since: Jakarta Persistence (JPA) 1.0 Additional JDK

_SELECTIVE Caching is enabled for all entities for which Cacheable( true ) is specified

: @OneToMany(orphanRemoval = true ) @JoinColumn(name = "CUST_ID") // join column is in table

whose load state is to be determined Returns: false if the entity has not been loaded, else true . Since: Jakarta Persistence (JPA) 1.0

. After this method returns, PersistenceUnitUtil.isLoaded must return true with the given entity instance

. After this method returns, PersistenceUnitUtil.isLoaded must return true with the given entity instance

Jakarta Persistence (JPA) Method in jakarta.persistence.PersistenceUnitUtil void load (    Object entity ) Load the persistent state of an entity belonging to the persistence unit and to an open persistence context. After this method returns, PersistenceUnitUtil.isLoaded must return true

Returns: false if entity's state has not been loaded or if the attribute state has not been loaded, else true . Since: Jakarta Persistence (JPA) 1.0

if entity's state has not been loaded or if the attribute state has not been loaded, else true . Since: Jakarta Persistence (JPA) 3.2

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.AbstractQuery AbstractQuery distinct (    boolean distinct ) Specify whether duplicate query results are eliminated. A true value will cause duplicates to be eliminated. A false value will cause duplicates to be retained

Jakarta Persistence (JPA) Method in jakarta.persistence.metamodel.SingularAttribute boolean isId() Is the attribute an id attribute? This method returns true if the attribute is a simple id , an embedded id , or an attribute of an id class . Returns: boolean indicating whether the attribute is an id. Since: Jakarta Persistence (JPA) 1.0

Jakarta Persistence (JPA) Method in jakarta.persistence.metamodel.IdentifiableType boolean hasSingleIdAttribute() Whether the identifiable type has a single id attribute. Returns true for a simple id or embedded id; returns false for an idclass. Returns: boolean indicating whether the identifiable

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.Subquery Subquery distinct (    boolean distinct ) Specify whether duplicate query results are eliminated. A true value will cause duplicates to be eliminated. A false value will cause duplicates to be retained. If distinct

Jakarta Persistence (JPA) Method in jakarta.persistence.Graph boolean hasAttributeNode (    String attributeName ) Determine if there is an existing attribute node for the attribute with the given name. Parameters: attributeName - name of the attribute Returns: true

Jakarta Persistence (JPA) Method in jakarta.persistence.Graph boolean hasAttributeNode (    Attribute attribute ) Determine if there is an existing attribute node for the given attribute. Parameters: attribute - attribute Returns: true if there is an existing attribute node. Since: Jakarta Persistence (JPA) 3.2

Jakarta Persistence (JPA) Method in jakarta.persistence.EntityTransaction void begin() Start a resource transaction. Throws: IllegalStateException - if EntityTransaction.isActive is true . Since: Jakarta Persistence (JPA) 1.0

Jakarta Persistence (JPA) Method in jakarta.persistence.EntityManager boolean isOpen() Determine whether the entity manager is open. Returns: true until the entity manager has been closed. Since: Jakarta Persistence (JPA) 1.0

Jakarta Persistence (JPA) Method in jakarta.persistence.EntityManagerFactory EntityManager createEntityManager() Create a new application-managed EntityManager . This method returns a new EntityManager instance each time it is invoked. The EntityManager.isOpen method will return true

it is invoked. The EntityManager.isOpen method will return true on the returned instance. Parameters: map

EntityManager instance each time it is invoked. The EntityManager.isOpen method will return true on the returned

.isOpen method will return true on the returned instance. Parameters: synchronizationType

Jakarta Persistence (JPA) Method in jakarta.persistence.EntityManagerFactory boolean isOpen() Indicates whether the factory is open. Returns true until the factory has been closed. Returns: boolean indicating whether the factory is open. Since: Jakarta Persistence (JPA) 1.0

Jakarta Persistence (JPA) Method in jakarta.persistence.OrderColumn boolean nullable (Optional) Whether the database column is nullable. Default: true Since: Jakarta Persistence (JPA) 1.0

Jakarta Persistence (JPA) Method in jakarta.persistence.OrderColumn boolean insertable (Optional) Whether the column is included in SQL INSERT statements generated by the persistence provider. Default: true Since: Jakarta Persistence (JPA) 1.0

Jakarta Persistence (JPA) Method in jakarta.persistence.OneToOne boolean optional (Optional) Whether the association is optional. If set to false then a non-null relationship must always exist. Default: true Since: Jakarta Persistence (JPA) 1.0

Jakarta Persistence (JPA) Method in jakarta.persistence.OrderColumn boolean updatable (Optional) Whether the column is included in SQL UPDATE statements generated by the persistence provider. Default: true Since: Jakarta Persistence (JPA) 1.0

Jakarta Persistence (JPA) Enum Constant in jakarta.persistence.SharedCacheMode ENABLE_SELECTIVE Caching is enabled for all entities for which Cacheable( true ) is specified. All other entities are not cached. Since: Jakarta Persistence (JPA) 1.0

will be true . Parameters: elem - element expression collection - expression Returns: is-not-member predicate. Since: Jakarta Persistence (JPA) 1.0

will be true . Parameters: elem - element collection - expression Returns: is-not-member predicate. Since: Jakarta Persistence (JPA) 1.0

Jakarta Persistence (JPA) Method in jakarta.persistence.MapKeyColumn boolean insertable (Optional) Whether the column is included in SQL INSERT statements generated by the persistence provider. Default: true Since: Jakarta Persistence (JPA) 1.0

Jakarta Persistence (JPA) Method in jakarta.persistence.ManyToOne boolean optional (Optional) Whether the association is optional. If set to false then a non-null relationship must always exist. May be used in schema generation to infer that the mapped foreign key column is not null . Default: true Since: Jakarta Persistence (JPA) 1.0

Jakarta Persistence (JPA) Method in jakarta.persistence.MapKeyColumn boolean updatable (Optional) Whether the column is included in SQL UPDATE statements generated by the persistence provider. Default: true Since: Jakarta Persistence (JPA) 1.0

Jakarta Persistence (JPA) Method in jakarta.persistence.MapKeyJoinColumn boolean insertable (Optional) Whether the column is included in SQL INSERT statements generated by the persistence provider. Default: true Since: Jakarta Persistence (JPA) 1.0

Jakarta Persistence (JPA) Method in jakarta.persistence.MapKeyJoinColumn boolean updatable (Optional) Whether the column is included in SQL UPDATE statements generated by the persistence provider. Default: true Since: Jakarta Persistence (JPA) 1.0

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.CriteriaBuilder Predicate and (    List restrictions ) Create a conjunction of the given restriction predicates. A conjunction of zero predicates is true . Parameters: restrictions - a list of zero or more restriction

Jakarta Persistence (JPA) Method in jakarta.persistence.JoinColumn boolean updatable (Optional) Whether the column is included in SQL UPDATE statements generated by the persistence provider. Default: true Since: Jakarta Persistence (JPA) 1.0

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.CriteriaBuilder Predicate and (    Predicate... restrictions ) Create a conjunction of the given restriction predicates. A conjunction of zero predicates is true . Parameters: restrictions - zero or more restriction

Jakarta Persistence (JPA) Method in jakarta.persistence.JoinColumn boolean nullable (Optional) Whether the foreign key column is nullable. Default: true Since: Jakarta Persistence (JPA) 1.0

Jakarta Persistence (JPA) Method in jakarta.persistence.JoinColumn boolean insertable (Optional) Whether the column is included in SQL INSERT statements generated by the persistence provider. Default: true Since: Jakarta Persistence (JPA) 1.0

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.CriteriaBuilder Predicate conjunction() Create a conjunction (with zero conjuncts). A conjunction with zero conjuncts is true . Returns: and predicate. Since: Jakarta Persistence (JPA) 1.0

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.CriteriaBuilder Predicate isTrue (    Expression x ) Create a predicate testing for a true value. Parameters: x - expression to be tested Returns: predicate. Since: Jakarta Persistence (JPA) 1.0

Jakarta Persistence (JPA) Method in jakarta.persistence.Convert boolean disableConversion Disables an auto-apply or inherited converter. If disableConversion = true , the Convert.converter element should not be specified. Default: false Since: Jakarta Persistence (JPA) 1.0

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.CriteriaQuery CriteriaQuery distinct (    boolean distinct ) Specify whether duplicate query results are eliminated. A true value will cause duplicates to be eliminated. A false value will cause duplicates to be retained

Jakarta Persistence (JPA) Method in jakarta.persistence.Cacheable boolean value (Optional) Whether or not the entity should be cached. Default: true Since: Jakarta Persistence (JPA) 1.0

it may ignore the problem and continue. Parameters: createSchemas - if true , attempt to create schemas

- if true , drop schemas, otherwise, leave them be Since: Jakarta Persistence (JPA) 1.0