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19

query hint

='roughPlanning'). Step 3: Process ObjectNode (v$1) instances (for every result tuple of the steps ... ) instances (for every result tuple of the steps ... : (p2.name='scheduledSlot'). Step 5: Process ObjectProperty (p1) instances (for every result tuple
17

Entity is not related to ObjectDB, but i get exception from ObjectDB

.entity.psql.DialogNew at org.hibernate.tuple.PojoInstantiator.instantiate(PojoInstantiator.java:127) [hibernate-core-4.0.1.Final.jar:4.0.1.Final] at org.hibernate.tuple.PojoInstantiator.instantiate(PojoInstantiator.java:136) [hibernate-core-4.0.1.Final.jar:4.0.1.Final] at org.hibernate.tuple
5

construct(resultClass, selections)

- if an argument is a tuple- or array-valued selection item Since: JPA 2.0
5

getAlias()

Method javax.persistence.TupleElement String getAlias() Return the alias assigned to the tuple element or null, if no alias has been assigned. Returns: alias Since: JPA 2.0
5

getResultType()

, the result type is Tuple. Otherwise, the result type is Object. Returns: result type Since: JPA 2.0
5

array(selections)

Method javax.persistence.criteria.CriteriaBuilder CompoundSelection<Object[]> array( Selection... selections ) Create an array-valued selection item. Parameters: selections - selection items Returns: array-valued compound selection Throws: IllegalArgumentException - if an argument is a tuple- or array-valued selection item Since: JPA 2.0
5

javax.persistence.criteria.AbstractQuery

is Tuple. Otherwise, the result type is Object. Returns: result type Since: JPA 2.0 Set< Root
3

Weird issue with variable naming

javax.persistence.OneToMany; import javax.persistence.Persistence; import javax.persistence.Tuple ... CriteriaBuilder cb = em.getCriteriaBuilder();   final CriteriaQuery<Tuple> cq = cb.createQuery(Tuple.class);   final Root<?> from = cq.from(MyEntity.class);   final Join<?, ?> join2 = from.join
3

@FetchGroup in JPA similar to JDO

); query.setHint(QueryHints.FETCH_GROUP_NAME, "names"); This will be equivalent to query using tuples: TypedQuery<Tuple> query = em.createQuery("select e.firstName, e.lastName FROM Entity e", Tuple.class); But with fetch group you don't have to convert tuples to objects. I know that you can add many
3

queries under 2.7.6_4 significantly slower than under 2.7.6

='(TC)'))). Step 3: Process ObjectProperty (v$2) instances (for every result tuple of the steps ... (for every result tuple of the steps above) --------------------------------------------- [Step 4a] Scan ... : Process ObjectProperty (v$2) instances (for every result tuple of the steps

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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