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JPA Annotation Attribute in javax.persistence.ManyToOne boolean optional default true (Optional) Whether the association is optional. If set to false then a non-null relationship must always exist. Since: JPA 1.0

JPA Annotation Attribute in javax.persistence.MapKeyColumn boolean insertable default true (Optional) Whether the column is included in SQL INSERT statements generated by the persistence provider. Since: JPA 2.0

JPA Annotation Attribute in javax.persistence.MapKeyColumn boolean updatable default true (Optional) Whether the column is included in SQL UPDATE statements generated by the persistence provider. Since: JPA 2.0

JPA Annotation Attribute in javax.persistence.MapKeyJoinColumn boolean insertable default true (Optional) Whether the column is included in SQL INSERT statements generated by the persistence provider. Since: JPA 2.0

JPA Annotation Attribute in javax.persistence.MapKeyJoinColumn boolean updatable default true (Optional) Whether the column is included in SQL UPDATE statements generated by the persistence provider. Since: JPA 2.0

using a foreign key mapping // In Customer class: @OneToMany(orphanRemoval= true ) @JoinColumn(name

JPA Annotation Attribute in javax.persistence.OneToOne boolean optional default true (Optional) Whether the association is optional. If set to false then a non-null relationship must always exist. Since: JPA 1.0

JPA Annotation Attribute in javax.persistence.OrderColumn boolean nullable default true (Optional) Whether the database column is nullable. Since: JPA 2.0

JPA Annotation Attribute in javax.persistence.OrderColumn boolean insertable default true (Optional) Whether the column is included in SQL INSERT statements generated by the persistence provider. Since: JPA 2.0

JPA Annotation Attribute in javax.persistence.OrderColumn boolean updatable default true (Optional) Whether the column is included in SQL UPDATE statements generated by the persistence provider. Since: JPA 2.0

: false if entity's state has not been loaded or if the attribute state has not been loaded, else true Since: JPA 2.0

is to be determined Return: false if the entity has not been loaded, else true Since: JPA 2.0

whose load state is to be determined Return: false if entity's state has not been loaded or if the attribute state has not been loaded, else true Since: JPA 2.0

. Parameters: entity - whose load state is to be determined Return: false if the entity has not been loaded, else true Since: JPA 2.0

ENABLE_SELECTIVE Caching is enabled for all entities for Cacheable( true ) is specified

JPA Enum Constant in javax.persistence.SharedCacheMode ENABLE_SELECTIVE Caching is enabled for all entities for Cacheable( true ) is specified. All other entities are not cached. Since: JPA 2.0

whether duplicate query results will be eliminated. A true value will cause duplicates to be eliminated

JPA Method in javax.persistence.criteria.AbstractQuery AbstractQuery 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

JPA Method in javax.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 predicates Return: and predicate Since: JPA 2.0

JPA Method in javax.persistence.criteria.CriteriaBuilder Predicate conjunction () Create a conjunction (with zero conjuncts). A conjunction with zero conjuncts is true . Return: and predicate Since: JPA 2.0

JPA Method in javax.persistence.criteria.CriteriaBuilder Predicate isTrue (    Expression  x ) Create a predicate testing for a true value. Parameters: x - expression to be tested Return: predicate Since: JPA 2.0

will be true . Parameters: elem - element expression collection - expression Return: is-not-member predicate Since: JPA 2.0

JPA Method in javax.persistence.criteria.CriteriaBuilder Predicate isNotMember (   E elem,     Expression  collection ) Create a predicate that tests whether an element is not a member of a collection. If the collection is empty, the predicate will be true

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

JPA Method in javax.persistence.criteria.CriteriaQuery CriteriaQuery 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

distinct (boolean distinct) Specify whether duplicate query results will be eliminated. A true

JPA Method in javax.persistence.criteria.Subquery Subquery 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

boolean hasSingleIdAttribute () Whether the identifiable type has a single id attribute. Returns true

attribute. Returns true for a simple id or embedded id; returns false for an idclass. Return: boolean

JPA Method in javax.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. Return: boolean indicating whether the identifiable type has a single id attribute Since: JPA 2.0

type has a single id attribute. Returns true for a simple id or embedded id; returns false

will return true if the attribute is an attribute that corresponds to a simple id, an embedded id, or

JPA Method in javax.persistence.metamodel.SingularAttribute boolean isId () Is the attribute an id attribute. This method will return true if the attribute is an attribute that corresponds to a simple id, an embedded id, or an attribute of an id class. Return: boolean indicating whether the attribute is an id Since: JPA 2.0

to contain subclasses. Return: true if this Extent was defined to contain instances

JDO Method in javax.jdo.Extent boolean hasSubclasses () Returns whether this Extent was defined to contain subclasses. Return: true if this Extent was defined to contain instances that are of a subclass type. Since: JDO 1.0

JDO Method in javax.jdo.PersistenceManager boolean isClosed () A PersistenceManager instance can be used until it is closed. Return: true if this PersistenceManager has been closed. See Also: close () Since: JDO 1.0

JDO Method in javax.jdo.PersistenceManager void evictAll (   boolean subclasses,    Class pcClass ) Mark the parameter instances as no longer needed in the cache. Parameters: pcClass - the class of instances to evict subclasses - if true , mark instances of subclasses also Since: JDO 2.1

JDO Method in javax.jdo.PersistenceManager Extent getExtent (   Class  persistenceCapableClass ) Equivalent to getExtent (persistenceCapableClass, true ) . See Also: getExtent Since: JDO 2.0

which the association was made will fail. If the validate flag is true

JDO Method in javax.jdo.PersistenceManager Object getObjectById (   Object oid ) Looks up the instance corresponding to the specified oid. This is equivalent to getObjectById(oid, true ); Parameters: oid - The object id of the object to load Return: the corresponding persistent instance Since: JDO 1.0

JDO Method in javax.jdo.PersistenceManager Collection getObjectsById (   Collection oids,    boolean validate ) Return the objects with the given oids. Parameters: oids - the oids of the objects to return validate - if true , the existance of the objects in

JDO Method in javax.jdo.PersistenceManager Collection getObjectsById (   Collection oids ) Return the objects with the given oids. This method is equivalent to calling (Collection, boolean) with the validate flag true . Parameters: oids - the oids of the objects to return Return

JDO Method in javax.jdo.PersistenceManager Object[] getObjectsById (   Object[] oids,    boolean validate ) Return the objects with the given oids. Parameters: oids - the oids of the objects to return validate - if true , the existance of the objects in

JDO Method in javax.jdo.PersistenceManager Object[] getObjectsById (   boolean validate,    Object... oids ) Return the objects with the given oids. Parameters: oids - the oids of the objects to return validate - if true , the existance of the objects in

JDO Method in javax.jdo.PersistenceManager Object[] getObjectsById (   Object... oids ) Return the objects with the given oids. This method is equivalent to calling getObjectsById with the validate flag true . Parameters: oids - the oids of the objects to return Return: the objects

. That is, they behave as persistent-new instances (return true to isPersistent, isNew, and isDirty

is true , then the current FetchPlan is applied to the pc parameter, as if detachCopy(Object

parameter is true , then the current FetchPlan is applied to the pcs parameters and the entire graph

parameter is true , then the current FetchPlan is applied to the pcs parameters and the entire graph

parameter is true , then the current FetchPlan is applied to the pcs parameters and the entire graph