ObjectDB Database Search

CriteriaQuery .where() for multiple conditions

Multiple Collection Fields not update correctly

multiple different applications access one odb file

Get multiple entities by Id

. However, the same method can handle multiple callback events if it is marked with more than one callback ... MyEntityWithListener { } You can attach multiple listener classes to a single entity: @Entity ... NoDefaultListenersForThisEntityEither extends NoDefaultListenersForThisEntity { } Callback invocation order When multiple callback

multiple fields in the members attribute of the @Index or @Unique annotation: @Entity @Index ( members ... annotation to either the class or any persistent field in the class. You can wrap multiple @Index ... { String firstName; String lastName; } Similarly, the @Uniques annotation can wrap multiple @Unique

multiple elements in the same configuration. This allows the same configuration file, with multiple activation codes, to be used on multiple computers. Note: If you are using an ObjectDB OEM license

propagated to the database. Multiple SELECT expressions The SELECT clause may also define composite ... for queries with multiple SELECT expressions, where custom result objects can provide an object ... multiple selections and builds a CompoundSelection instance based on the expected query results

explicitly in the name element of the @Entity annotation. Multiple range variables are allowed ... , c2 FROM Country c1, Country c2 WHERE c2 MEMBER OF c1.neighbors Multiple variables are equivalent ... countries. Caution is required when using multiple range variables. Iteration over about 1,000,000

cannot be shared by multiple entities. Each containing entity must have its own embedded objects ... can reference multiple entities. @Entity class Employee { : @OneToOne ( cascade = CascadeType . PERSIST

only once, even if they are referenced multiple times. Referencing instances of other persistable types from multiple persistent fields causes data duplication in the database. Entity classes An entity class

WHERE and HAVING clauses. An enum defining the logical operators ( AND , OR ) used to combine multiple

) ObjectDB uses automatic optimistic locking to prevent concurrent changes to entities by multiple users

. A container annotation that groups multiple @NamedQuery definitions on a single class. Supplies parameters

ObjectDB supports master-slave replication, also known as clustering. With replication, the same database is managed on multiple computers, or nodes, which can be in different geographic locations. This configuration helps achieve high availability, fault tolerance, and prompt disaster recovery

: * ( multiplication ), / (division), + (addition), and - (subtraction) Comparison operators

has inheritance, multiple subgraphs can be specified. These additional subgraphs are intended to add subclass ... NamedSubgraph element. If multiple subgraphs are specified due to inheritance, they are referenced by ... also being specified. If the target type has inheritance, multiple subgraphs can be specified. These additional

to seperate files ( Each file is binded to different disk ) How can i configure objectdb for multiple ... so you cannot split a database to multiple disks unless you split the database itself to multiple ... .g. temporary files, recovery file) to other disks. using replication with multiple servers

) Add a node to the graph that corresponds to a managed type with inheritance. This allows for multiple ... with inheritance. This allows for multiple subclass subgraphs to be defined for this node of the entity ... that corresponds to a managed type with inheritance. This allows for multiple subclass subgraphs to be defined

specify the converter class, except to disambiguate cases where multiple converters ... . To override conversion mappings at multiple levels of embedding, a dot ( . ) notation form must be used ... Specifies the converter to be applied. This element must be explicitly specified if multiple

that corresponds to a managed type with inheritance. This allows for multiple subclass subgraphs to be defined ... to a managed type with inheritance. This allows for multiple subclass subgraphs to be defined for this node ... to a managed type with inheritance. This allows for multiple subclass subgraphs to be defined

to inherited fields or properties, and so the state of an entity instance might be stored across multiple table

Jakarta Persistence (JPA) Annotation Type jakarta.persistence.ManyToMany Implemented Interfaces: Annotation Target: Method, Field Specifies a many-valued association with many-to-many multiplicity , mapping to an intermediate table called the join table . Every many-to-many association

Jakarta Persistence (JPA) Annotation Type jakarta.persistence.ManyToOne Implemented Interfaces: Annotation Target: Method, Field Specifies a single-valued association to another entity class that has many-to-one multiplicity . It is not usually necessary to specify the target entity explicitly

Jakarta Persistence (JPA) Annotation Type jakarta.persistence.NamedNativeQueries Implemented Interfaces: Annotation Target: Type Declares multiple native SQL named queries. Query names are scoped to the persistence unit. The NamedNativeQueries annotation can be applied to an entity or mapped

Jakarta Persistence (JPA) Annotation Type jakarta.persistence.Converts Implemented Interfaces: Annotation Target: Method, Field, Type Used to group Convert annotations. Multiple converters must not be applied to the same basic attribute. See Also: Convert Since: Jakarta Persistence (JPA) 2.1

of multiple persistent fields or properties, across several entities, and so distinct instances

of embeddable type has nested mappings to multiple columns in one of the tables mapped by the entity

serially to begin and commit multiple transactions. Returns: EntityTransaction instance. Throws

Hi there, Our app is highly scalable and can be distributed among multiple processes on multiple ... only limitation. Is there a way to spawn multiple server instances "embedded" into our app so we can avoid the single-process restriction though still have multiple processes to avoid a SPOF? Yes, the OEM

Jakarta Persistence (JPA) Method in jakarta.persistence.PersistenceConfiguration PersistenceConfiguration properties (    Map properties ) Set multiple properties of this persistence unit. Parameters: properties - the properties Returns: this configuration. Since: Jakarta Persistence (JPA) 1.0

:757) I checked multiple times if the versions match. They do. DB server version 2.6.2. Client ... ;   } This code worked for a couple of years now and is used in multiple projects. mosi0815 ... to every transaction stops to work correctly. I also found multiple examples on the Internet where they don't

that's a crutch. Could there be a way in the future to split the database across multiple files? Thank ... machine either way. Could there be a way in the future to split the database across multiple files ... how breaking a database into multiple files, for example one file per entity class, may help

containing a single oid object (the method is written to support multiple objects ... should return an empty collection. It should work with single or multiple IDs and with any collection ... multiple entities (error 636) at com.objectdb.jdo.PMImpl.getObjectsById(PMImpl.java:512) at com.objectdb

! You can check it by repeating insertion of   a pic of multiples . I can not send the 7GB file ... objects have identity and support multiple references without duplication. All the other types ... loops and file reading operations" will cause the persistence of my class into multiple copies? TIA

with multiple parents), which are unlikely to be solved by the Doctor. Is it the a log for the database ... there should be only one process that accesses the database file. Accessing a database from multiple processes concurrently can cause exactly this issue of structural issues (orphan pages and page with multiple

one  EntityManagerFactory per application, with multiple   EntityManager instances for multiple database connections. support Support

Hi I have not seen, cursory search was not informative, if odb can be embedded like derby.  How does odb handle byte[].  How do you create multiple dbs.  Finally is there a gui ... (see supported types ). How do you create multiple dbs. See this documentation page .  Finally

code is per machine. Use your site license to generate multiple activation codes. You may also specify multiple activation codes in the configuration file (in order to share the same objectdb.conf file

. However, if your application use multiple threads that execute multiple queries against ObjectDB simultaneously

your accessing that object in the database from multiple methods simultaneously or you've got some ... . If you still get the error then you can try waiting before trying the transaction again or trying multiple times. jgleoj23 Joseph Gardi

where multiple threads can hit a shared counter (which is used to track separate customers product

multiple   EntityManagerFactory Instances. support Support

Hi, We are trying to create a servlet that performs database online backup. Unfortunately, even though no exception is thrown, backup files aren't created. When I turn on DEBUG logging in ODB, I get multiple ClassNotFoundExceptions like : [2011-06-04 05:34:14 #2 type.loader] java.lang

We installed a security hotfix on all our VM instances. BAM all DB licenses are inactive, now we have to create new keys for all of them. We sometimes have to create new keys if we update to a newer objectdb version. We had to create new keys multiple times because of the unstable activation

, otherwise the same result may have multiple different order values. Your third query, although logically

; The screenshot of post #1 was taken after triggering multiple full GCs (via the option in JavaVisualVm

with two String fields key and value, and store your global properties using multiple entity objects

you split the transaction to multiple smaller transactions? support Support     ... you split the transaction to multiple smaller transactions? Because it is a large transaction content ... can be larger than the database, since the same database page may be stored in the file multiple times

with multiple JOIN operations with very slow execution time you may be able to manually select the best