7 | MapKeyJoinColumn.table that contains the foreign key column. 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 ... key mapping strategy, the foreign key column for the map key is in the table of the entity |
7 | javax.persistence.MapKey the map key for associations of type java.util.Map when the map key is itself the primary key or a persistent field or property of the entity that is the value of the map. If a persistent field or property other than the primary key is used as a map key then it is expected to have a uniqueness constraint |
6 | What are the main benefits of using ObjectDB? the execution time of object oriented applications significantly. For instance, collection and map |
6 | JPA Annotations for ClassesJPA defines three types of persistable classes which are set by the following annotations: Chapter 2 of the ObjectDB manual explains these annotations in detail. Entity and mapped super classes can be further configured by annotations that specify cache preferences and lifecycle event listener |
6 | Deleting JPA Entity Objects objects. Orphan removal can also be set for collection and map fields. For example: @Entity class |
6 | SELECT clause (JPQL / Criteria API) clause. Collection and map fields cannot be included in the results directly, but their content |
6 | Entity Management Settings class, which is not an entity class, mapped super class or embeddable class). The <cascade-persist |
6 | Index Definition; : } Indexes in Queries ObjectDB manages a BTree for every index. A BTree is an ordered map data |
0 | javax.jdo.Query variableDeclaration, String candidateCollectionExpression, Map parameters) Add a subquery to this query. Add a subquery to this query. The Map version of the method treats the key of each map entry as ... for either the parameter or the value of the String[], or for any map key or value, that expression is ignored |
0 | javax.jdo.PersistenceManagerFactory getMapping() Get the Mapping setting for this factory. Get the Mapping setting for this factory. This is used to find the object-datastore mapping file(s). Returns: the Mapping setting. Since: JDO 1.0 ... setMapping(String mapping) Set the Mapping setting for this factory. Set the Mapping setting |
