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javax.persistence.MapKeyClass

the type of the map key for associations of type java.util.Map. The map key can be a basic type, an embeddable class, or an entity. If the map is specified using Java generics, the MapKeyClass ... ; ... @ElementCollection(targetClass=String.class) @MapKeyClass(String.class) Map images
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MapKeyColumn.name

Annotation Element javax.persistence.MapKeyColumn String name (Optional) The name of the map key column. The table in which it is found depends upon the context. If the map key is for an element collection, the map key column is in the collection table for the map value. If the map key
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javax.persistence.criteria.CriteriaBuilder

Expression<Set<K>> keys(M map) Create an expression that returns the keys of a map. Create an expression that returns the keys of a map. Parameters: map - map Returns: set expression Since: JPA 2.0 ... to convert to uppercase Since: JPA 2.0 Expression<Collection<V>> values(M map) Create an expression
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javax.persistence.EntityManager

that are related or grouped by the application, and which must be colocated in their mapping to a single ... resultSetMapping - the name of the result set mapping Returns: the new query instance Since: JPA 1.0 Query ... primaryKey, Map<String,Object> properties) Find by primary key, using the specified properties. Find by
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javax.persistence.spi.PersistenceUnitInfo

classes Since: JPA 1.0 List<String> 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. Returns the list of the names of the mapping files that the persistence provider must load to determine
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javax.persistence.metamodel.MapAttribute

javax.persistence.metamodel Interface MapAttribute<X,K,V> Superinterfaces: Attribute<X,Map<K,V>>, Bindable<V>, PluralAttribute<X,Map<K,V>,V> Instances of the type MapAttribute represent persistent java.util.Map-valued attributes. Since: JPA 2.0 Class<T> getBindableJavaType() Return the Java type
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javax.persistence.spi.PersistenceProvider

EntityManagerFactory createContainerEntityManagerFactory( PersistenceUnitInfo info, Map map) Called by ... when an EntityManagerFactory is to be created. Parameters: info - metadata for use by the persistence provider map - a Map of integration-level properties for use by the persistence provider (may be null
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javax.persistence.PrimaryKeyJoinColumn

. It is used to join the primary table of an entity subclass in the JOINED mapping strategy ... to a primary table; and it may be used in a OneToOne mapping in which the primary key ... is specified for a subclass in the JOINED mapping strategy, the foreign key columns are assumed
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getMappingFileNames()

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 named and be resource-loadable from the application classpath. Each mapping file name corresponds
5

MapKeyJoinColumn.name

of the foreign key column for the map key. The table in which it is found depends upon the context. If the join is for a map key for an element collection, the foreign key column is in the collection table for the map value. If the join is for a map key for a ManyToMany entity relationship or for a OneToMany

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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