About identifier

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Manual
10

Retrieving JPA Entity Objects

object can be uniquely identified and retrieved by the combination of its class and its primary key
Manual
10

JPA Lifecycle Events

- when an entity is identified as modified by the EntityManager. @PostUpdate - after updating an entity in
Manual
10

Database Doctor

ObjectDB Doctor's diagnosis regularly in order to identify potential problems early on. Running
JDO Doc
9

javax.jdo.spi.PersistenceCapable

to provide the value of the single field identified by fieldNumber. The owning StateManager uses this method to ask the instance to provide the value of the single field identified by fieldNumber ... StateManager uses this method to ask the instance to provide the values of the multiple fields identified by
JDO Doc
9

javax.jdo.Query

) to identify that the created query should obey the JDOQL syntax and semantic rules. The string constant used as the first argument to PersistenceManager.newQuery(String,Object) to identify that the created ... to PersistenceManager.newQuery(String,Object) to identify that the created query should use SQL semantics. The string
JDO Doc
6

javax.jdo.PersistenceManager

. The classes parameter identifies all of the classes of interest. If the classes parameter ... .0 Sequence getSequence(String name) Returns the sequence identified by name. Returns the sequence identified by name. Parameters: name - the name of the Sequence Returns: the Sequence Since: JDO 2.0
JPA Doc
4

getDeclaredId(type)

the identifiable type or if the identifiable type has an id class Since: JPA 2.0
JPA Doc
4

getId(type)

: IllegalArgumentException - if id attribute of the given type is not present in the identifiable type or if the identifiable type has an id class Since: JPA 2.0
JPA Doc
4

getIdClassAttributes()

Method javax.persistence.metamodel.IdentifiableType Set> getIdClassAttributes() Return the attributes corresponding to the id class of the identifiable type. Returns: id attributes Throws: IllegalArgumentException - if the identifiable type does not have an id class Since: JPA 2.0
JPA Doc
4

getSupertype()

Method javax.persistence.metamodel.IdentifiableType IdentifiableType getSupertype() Return the identifiable type that corresponds to the most specific mapped superclass or entity extended by the entity or mapped superclass. Returns: supertype of identifiable type or null if no such supertype Since: JPA 2.0