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boolean isLoaded(Object entity) Determine the load state of an entity. Determine the load state ... is to be determined Returns: false if the entity has not been loaded, else true Since: JPA 2.0 boolean


Method javax.persistence.criteria.Order boolean isAscending() Whether ascending ordering is in effect. Returns: boolean indicating whether ordering is ascending Since: JPA 2.0


Method javax.persistence.metamodel.Attribute boolean isAssociation() Is the attribute an association. Returns: boolean indicating whether the attribute corresponds to an association Since: JPA 2.0


: "" Since: JPA 1.0 boolean optional (Optional) Whether the association is optional. (Optional ... value: true Since: JPA 1.0 boolean orphanRemoval (Optional) Whether to apply the remove operation


Method javax.persistence.metamodel.Attribute boolean isCollection() Is the attribute collection-valued (represents a Collection, Set, List, or Map). Returns: boolean indicating whether the attribute is collection-valued Since: JPA 2.0


- expressions to be tested against Returns: predicate testing for membership Since: JPA 2.0 boolean ... is a compound selection. Returns: boolean indicating whether the selection is a compound selection


checkGuard(Object arg0) Parameters: arg0 - void checkGuard(Object arg0) Parameters: arg0 - boolean equals(Object arg0) Parameters: arg0 - String getActions() String getName() int hashCode() boolean


the expression that is used for ordering. Returns: expression used for ordering Since: JPA 2.0 boolean ... : boolean indicating whether ordering is ascending Since: JPA 2.0 Order reverse() Switch the ordering

retrieveAll(pcs, useFetchPlan)

Method javax.jdo.PersistenceManager void retrieveAll( Object[] pcs, boolean useFetchPlan ) Retrieve field values of instances from the store. This tells the PersistenceManager that the application ... and which instances to retrieve. Since: JDO 1.0.1 See Also: retrieveAll(boolean,Object...)


Method javax.jdo.PersistenceManagerFactory boolean getReadOnly() Gets the value for read-only for this PMF. Indicates whether the datastore is read-only or writable. Returns: the readOnly setting. Since: JDO 2.2 See Also: setReadOnly(boolean)

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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