 16 | of the createEntityManagerFactory method takes a map of persistence unit properties as a second parameter:
Mapmap ... for instantiation of EntityManager that, like the factory, takes a map of properties as an argument |
16 | of the createEntityManagerFactory method takes a map of persistence unit properties as a second parameter:
Mapmap ... for instantiation of EntityManager that, like the factory, takes a map of properties as an argument |
16 | collection and map persistent fields (i.e. through one-to-one and many-to-one relationships ... through non collection and map persistent fields are also retrieved. Theoretically, in some extreme ... )
private Employee manager;
:
}
The default for non collection and map references is FetchType |
16 | (extremely fast JOIN queries). Map keys and values are indexable. Nested paths inside embedded objects ... than other JPA solutions - no need to learn and use O/R mapping. Easier to learn than other Object ... JPA is very simple, except for mapping, which is irrelevant to ObjectDB. Persistence is set using JPA |
16 | elements are indexable (extremely fast JOIN queries). Map keys and values are indexable. Nested paths ... . Easy Learning Curve Easier than other JPA solutions - no need to learn and use O/R mapping. Easier ... to most developers. Friendly API JPA is very simple, except for mapping, which is irrelevant to ObjectDB |
16 | elements are indexable (extremely fast JOIN queries). Map keys and values are indexable. Nested paths ... . Easy Learning Curve Easier than other JPA solutions - no need to learn and use O/R mapping. Easier ... to most developers. Friendly API JPA is very simple, except for mapping, which is irrelevant to ObjectDB |
14 | can only be specified in a mapping XML file because there is no equivalent annotation:
mappings ... -unit-defaults>
mappings>
The mapping file |
14 | element in the XML mapping file:
mappings xmlns="http://java.sun.com/xml/ns/persistence/orm ... -unit-defaults>
mappings>
The mapping file |
14 | element in the XML mapping file:
mappings xmlns="http://java.sun.com/xml/ns/persistence/orm ... -unit-defaults>
mappings>
The mapping file |
14 | element in the XML mapping file:
mappings xmlns="http://java.sun.com/xml/ns/persistence/orm ... -unit-defaults>
mappings>
The mapping file |