ObjectDB Database Search

Hi, Is it ok to put list or map of embeddable objects in entity? I mean, for example : @Entity ... bList;     @Embedded     Map cMap; (...) } where Class_B and Class_C ... ; Thanks in advance for help. kborkowski Karol Borkowski Collections and maps of any persistable type

map types is not stable, we lost them sometimes after JVM restarted. Eager fetch is properly set ... is we confirm that the collection or map are stored successfully by using explorer tools when the JVM ... () of collection or map before closing the EntityManager, data can be retrieved successfully: 

Well ! I think i pointed out a HUGE performance issue with mapped -by attribute (yeah again :( ). Here is the test case : 1- Create 100 000 entities with for each 1 entity with @OneToOne(mappedBy ... , go the MyEntity class and remove " mapped -by". You obtain 1 second max of query fetch. So my performance

Hello Support-Team, we have a problem with the enhancer. In the persistence.xml are two mapping -files: META-INF/orm.xml META-INF/ormreq.xml We start the enhancer and the entities of orm.xml ... Why the second mapping -file is ignored?   The unit test has following result, because not

Hi, In version 2.4.2, when an object in a list is reversed mapped to the owning object, queries are returning objects of types that were not specified in the query. In the attached example the last test fails because the query returns both TeamA and TeamB objects where only TeamA was specified in

accessing an object (a persistent map field according to the stack trace) when the connection to the database is closed. support Support

Hello, we want to execute following query: SELECT tc FROM TC tc WHERE ?1 MEMBER OF tc.testMacros.values() But we get an internal ObjectDB exception. It is possible to implement a query for this case at all?   @Entity public class TC { @OneToMany Map testMacros = new HashMap(); }   btc_es

Exception when querying Map property with @embedded & Enhancer enabled

Cascade delete with unidirectional mapping

, SIZE, MEMBER OF, IN) are currently not supported for mapped by (inverse) collections. These operations are supported for direct (not mapped by) collections. Navigation and JOIN is supported for both direct and mapped by collections. The following test case demonstrates a problematic query

Currently, collections can be edited but maps cannot be edited. For a database model that has a lot of static data that need to be entered into the database on multiple edits this presents as an inconvenience. It would be great, therefore, if we can edit maps straight from the explorer. Flying Banana Jiacong Xu

As demonstrated in this forum thread , a mapped by collection field with lazy fetch mode is not initialized in results of a query that uses JOIN FETCH on that collection field (when enhancement is used). support Support   Build 2.4.1_06 fixes this issue (fields are now initialized

) 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 is for a ManyToMany entity relationship or for a OneToMany entity relationship using

Interfaces: Annotation Target: Method, Field Specifies the enum type for a map key whose basic type ... relationship of type java.util. Map , in conjunction with the ElementCollection , OneToMany , or ManyToMany ... (STRING) public Map getEmployees() { ... } ... } See Also: ElementCollection OneToMany ManyToMany

Interfaces: Annotation Target: Method, Field This annotation must be specified for persistent map keys of type java.util.Date and java.util.Calendar . It may only be specified for map keys of these types ... . Map in conjunction with the ElementCollection , OneToMany , or ManyToMany annotation. Example

Interfaces: Annotation Target: Type Specifies a mapping of the columns of a result set of a native SQL ... the result set mapping to constructors. Since: Jakarta Persistence (JPA) 2.1 ColumnResult[] columns () Specifies the result set mapping to scalar values. Since: Jakarta Persistence (JPA) 1.0 EntityResult

: Annotation Target: Method, Field Specifies the mapping of an association to an intermediate join table. It is applied to the owning side of an association. A join table is typically used in the mapping of many-to-many and unidirectional one-to-many associations. It may also be used to map

, mapping to an intermediate table called the join table . Every many-to-many association ... , is specified on the owning side. The JoinTable annotation specifies a mapping to a database table ... that must be cascaded to the target of the association. When the target collection is a java.util. Map , the cascade

association usually maps a foreign key column or columns. This mapping may be specified using the JoinColumn annotation. Alternatively, an optional OneToOne association is sometimes mapped to a join table ... generation to infer that the mapped foreign key column is not null . Since: Jakarta Persistence (JPA

Jakarta Persistence (JPA) Annotation Type jakarta.persistence.MapKeyJoinColumns Implemented Interfaces: Annotation Target: Method, Field Supports composite map keys that reference entities ... () (Required) The map key join columns that are used to map to the entity that is the map key. Since: Jakarta

in the table or tables mapped by the owning entity. The persistent fields and properties of an embeddable class are mapped using the same mapping annotations used to map entity classes

. Since: Jakarta Persistence (JPA) 1.0 Expression get ( MapAttribute map ) Create a path corresponding to the referenced map -valued attribute. Parameters: map - map -valued attribute Returns: expression

( boolean createSchemas ) Create database objects mapped by entities belonging to the persistence unit ... dropSchemas ) Drop database objects mapped by entities belonging to the persistence unit, undoing ... the database tables mapped by entities belonging to the persistence unit, and then re-import initial

Type used to indicate a specific mapping of java.util.Date or java.util.Calendar . Deprecated: Newly ... .0 The JPA Persistable Types article explains how to use TemporalType . Enum Constants DATE Map as java.sql.Date Since: Jakarta Persistence (JPA) 1.0 TIME Map as java.sql.Time Since: Jakarta

createEntityManagerFactory ( String persistenceUnitName , Map properties ) Create and return ... ) 3.2 void generateSchema ( String persistenceUnitName , Map map ) Create database schemas and/or ... : persistenceUnitName - the name of the persistence unit map - properties for schema generation

maps a unique foreign key relationship, either a foreign key column or columns with a unique constraint, or a relationship via a shared primary key. The JoinColumn annotation may be used to map the foreign key column or columns. Alternatively, an optional OneToOne association is sometimes mapped

) The name of the table that contains the column. Defaults: If the map key is for an element collection, the name of the collection table for the map value. If the map key is for a OneToMany or ManyToMany entity relationship using a join table, the name of the join table for the map . If the map key

) The 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

. If the join is for a OneToOne or ManyToOne mapping using a foreign key mapping strategy, the foreign key ... OneToMany mapping using a foreign key mapping strategy, the foreign key is in the table of the target entity. If the join is for a ManyToMany mapping or for a OneToOne or bidirectional ManyToOne / OneToMany

mapping using a foreign key mapping strategy, the name of the table of the source entity or embeddable. If the join is for a unidirectional OneToMany mapping using a foreign key mapping strategy, the name of the table of the target entity. If the join is for a ManyToMany mapping or for a OneToOne or

Jakarta Persistence (JPA) Method in jakarta.persistence.AttributeNode Map getKeySubgraphs() Return a map of subgraphs associated with this attribute node's map key. Returns: a Map of subgraphs associated with this attribute node's map key or an empty Map if none have been defined. Since: Jakarta Persistence (JPA) 1.0

: Annotation Target: Type Specifies a composite primary key type whose fields or properties map ... equality consistently with equality of the mapped primary key of the database table. The primary key ... properties with matching names and types. The mapping of fields or properties of the entity to fields

, Serializable Enumerated the options for mapping entity inheritance. See Also: Inheritance.strategy ... , with only the columns mapped to persistent fields and properties declared by the entity class. Each class in the hierarchy has its own table, but that table does not contain columns mapped

: Annotation Target: Type Specifies the inheritance mapping strategy for the entity class hierarchy ... if no inheritance type is specified for an entity class hierarchy, the SINGLE_TABLE mapping strategy ... (JPA) 1.0 Public Instance Methods InheritanceType strategy () The inheritance mapping strategy

the mapping for an EmbeddedId primary key, an attribute within an EmbeddedId primary key, or ... ; ... @MapsId("empid") // maps the empid attribute of embedded id @ManyToOne Employee emp; } If a ManyToOne ... to which the relationship attribute corresponds. If not explicitly specified, the relationship maps the primary key

ConstructorResult annotation to map a column of the SELECT list of a SQL query. The name element references ... Persistence (JPA) 1.0 Class type () (Optional) The Java type to which the column type is to be mapped . If the type element is not specified, the default JDBC type mapping for the column is used

) EntityManager.refresh(Object, java.util. Map ) EntityManager.refresh(Object, LockModeType, java.util. Map ) EntityManager.lock(Object, LockModeType) EntityManager.lock(Object, LockModeType, java.util. Map

: Annotation Used in conjunction with the SqlResultSetMapping or NamedNativeQuery annotation to map ... should select all the columns that are mapped to the entity object. This should include foreign key ... () The class of the result. Since: Jakarta Persistence (JPA) 1.0 FieldResult[] fields () Maps the columns

is an enum type. An enum can be mapped as either a string or an integer , where EnumType enumerates the available options. The mapping may be explicitly specified by this annotation. If a persistent field or ... ) The type used in mapping an enum type. Since: Jakarta Persistence (JPA) 1.0 Annotation Elements

: Annotation Target: Method, Field The simplest type of mapping of a persistent field or property ... apply. The database column mapped by the persistent field or property may be specified using ... that the mapped column is not null . If not specified, defaults to true . Since: Jakarta Persistence (JPA) 1

of superclass subgraphs Parameters: attributeName - name of the attribute type - entity subclass Returns

of superclass subgraphs. Parameters: attribute - attribute type - entity subclass Returns: subgraph

of superclass subgraphs Parameters: attribute - attribute type - entity subclass Returns: subgraph

Jakarta Persistence (JPA) Method in jakarta.persistence.NamedEntityGraph NamedSubgraph[] subclassSubgraphs() (Optional) A list of subgraphs that will add additional attributes for subclasses of the annotated entity class to the entity graph. Specified attributes from superclasses are included in subclasses. Since: Jakarta Persistence (JPA) 1.0

. Superclass subgraph entries will be merged into subclass subgraphs. The value of this element

the specified attributes of superclass subgraphs. Parameters: type - entity subclass Returns

the specified attributes of superclass subgraphs. Parameters: type - entity subclass Returns

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.Path Expression get (    MapAttribute map ) Create a path corresponding to the referenced map -valued attribute. Parameters: map - map -valued attribute Returns: expression corresponding to the referenced attribute. Since: Jakarta Persistence (JPA) 1.0

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.CriteriaBuilder Expression values (    M map ) Create an expression that returns the values of a map . Parameters: map - map Returns: collection expression. Since: Jakarta Persistence (JPA) 1.0

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.CriteriaBuilder Expression keys (    M map ) Create an expression that returns the keys of a map . Parameters: map - map Returns: set expression. Since: Jakarta Persistence (JPA) 1.0