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4

select(selection)

of the select item when it results from a get or join operation and the query result type is specified ... ) .join("items") . join("product")); Parameters
4

javax.persistence.criteria.CriteriaQuery

when it results from a get or join operation and the query result type is specified. For example ... (Product.class); q2.select(q2.from(Order.class) .join("items") .join("product")); Parameters: selection - selection specifying the item that is to be returned
4

getJoinType()

Method javax.persistence.criteria.Fetch JoinType getJoinType() Return the join type used in the fetch join. Returns: join type Since: JPA 2.0
4

Issue with UPPER ?

COUNT($1) FROM com.lexware.vereinsverwaltung.verein.mitglied.Mitglied $1 LEFT JOIN $1.mitgliedschaft $2 LEFT JOIN $1.profile $3 LEFT JOIN $3.organisation $4 LEFT JOIN $1.postalAddresses $5 LEFT JOIN $1 ... .Mitglied $1 LEFT JOIN $1.mitgliedschaft $2 LEFT JOIN $1.profile $3 LEFT JOIN $3.organisation $4 LEFT
3

javax.persistence.MapKeyJoinColumns

2.0 See Also: MapKeyJoinColumn MapKeyJoinColumn[] value (Required) The map key join columns that are used to map to the entity that is the map key. (Required) The map key join columns that are used
3

getModel()

Method javax.persistence.criteria.PluralJoin PluralAttribute<?,C,E> getModel() Return the metamodel representation for the collection-valued attribute corresponding to the join. Returns: metamodel collection-valued attribute corresponding to the target of the join Since: JPA 2.0
3

MapKeyColumn.table

using a join table, the name of the join table for the map. If the map key is for a OneToMany entity
3

PessimisticLockScope.NORMAL

to the non-collection-valued persistent state of that instance. If a joined inheritance strategy ... contain the foreign key (such as relationships that are mapped to join tables or unidirectional
3

getModel()

Method javax.persistence.criteria.PluralJoin PluralAttribute<?,C,E> getModel() Return the metamodel representation for the collection-valued attribute corresponding to the join. Returns: metamodel collection-valued attribute corresponding to the target of the join Since: JPA 2.0
3

getAttribute()

Method javax.persistence.criteria.Fetch Attribute<?,?> getAttribute() Return the metamodel attribute corresponding to the fetch join. Returns: metamodel attribute for the join Since: JPA 2.0

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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