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5

javax.persistence.PreRemove

javax.persistence Annotation PreRemove Target: Callback methods Is used to specify callback methods for the corresponding lifecycle event. This annotation may be applied to methods of an entity class, a mapped superclass, or a callback listener class. Since: JPA 1.0 Learn how to define and use JPA
JPA Doc
5

javax.persistence.PreUpdate

javax.persistence Annotation PreUpdate Target: Callback methods Is used to specify callback methods for the corresponding lifecycle event. This annotation may be applied to methods of an entity class, a mapped superclass, or a callback listener class. Since: JPA 1.0 Learn how to define and use JPA
JPA Doc
5

javax.persistence.Transient

javax.persistence Annotation Transient Target: Fields (including property get methods) Specifies that the property or field is not persistent. It is used to annotate a property or field of an entity class, mapped superclass, or embeddable class. Example: @Entity public class Employee
JPA Doc
5

managedType(cls)

Method javax.persistence.metamodel.Metamodel ManagedType managedType(   Class cls ) Return the metamodel managed type representing the entity, mapped superclass, or embeddable class. Parameters: cls - the type of the represented managed class Returns: the metamodel managed type Throws: IllegalArgumentException - if not a managed class Since: JPA 2.0
Manual
4

Locking in JPA

> For an EntityManagerFactory - using the createEntityManagerFacotory method:   MapMap properties = new HashMap ... : Map properties = new HashMap();   properties.put("javax.persistence.lock.timeout
Result
4

ObjectDB - Object Database for Java (JPA/JDO)

Database, which supports JPA with no mapping. See for yourself how easy it is. Download ObjectDB ... , records, ORM tools and mapping - start writing more effective database code using Java classes ... objects and flat database table rows. Object Relational Mapping (ORM) tools can reduce some manual work
JPA Doc
4

javax.persistence.criteria.MapJoin

>, From, Join, Path, PluralJoinMap,V>, Selection, TupleElementMap. Since: JPA 2.0 Selection alias(String name ... that corresponds to the map entry. Create an expression that corresponds to the map entry. Returns
JPA Doc
4

javax.persistence.MapKeyJoinColumn

) Specifies a mapping to an entity that is a map key. The map key join column is in the collection table, join table, or table of the target entity that is used to represent the map. If no MapKeyJoinColumn ... ")) @MapKeyJoinColumn(name="DIVISION") Map organization; } Example 2: @Entity
JPA Doc
4

javax.persistence.MapKeyColumn

the mapping for the key column of a map whose map key is a basic type. If the name element is not ... ="IMAGE_FILENAME") @CollectionTable(name="IMAGE_MAPPING") Map images; // map ... ) The name of the map key column. (Optional) The name of the map key column. The table in
Manual
4

Database Schema Evolution

collection or array that can contain that object as en element. From any map type to any map type as