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19

Searching lists within objects

to have the real object at search time. Trying to use join is problematic as for every extra attribute I add to the search, I need to add 2 more joins. Obviously this is not satisfactory ... );         Root<CDI> cdi = q.from(CDI.class);                 Join<CDI, Attribute> attributeJoin = cdi
4

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
4

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
4

javax.persistence.ManyToMany

, the owning side and the non-owning, or inverse, side. The join table is specified on the owning ... annotation to specify the relationship field or property of the owning side. The join table
4

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

Issue with DISTINCT Select

.foundation.contact.individual.IndividualContact $1 LEFT JOIN $1.profile $2 WHERE ((TYPE($1)=class com ... JOIN $1.profile $2 ORDER BY UPPER($1.profile.lastName) But doesn't help us because we can't change ... using the left join to select all entities, also those which have profile = null quasado Alexander Adam
3

Weird issue with variable naming

is that we do a LEFT JOIN on an embedded property as well as ordering is involved in selection ... of our left join variable becomes $1. We're also adding a custom function expression in where clause ... ; import javax.persistence.criteria.Join; import javax.persistence.criteria.JoinType; import
3

queries more than 10 times slower using 2.8.1 versus 2.7.6

join o.linkedObjects l1 where o.classIdentifier = '(SI)' and o.type = 0 and o.state = 0 and (o ... 2: "select distinct o from ObjectNode o join o.properties p1 join o.properties p2 join o.properties p10 join o.properties p20 join o.properties p21 where o.classIdentifier = '(OP)' and (o
3

Query Execution Error

JOIN $1.mitgliedschaft $2 LEFT JOIN $2.abteilungen $3 LEFT JOIN $3.abteilung $4 WHERE (((NOT ((($2 ... com.lexware.vereinsverwaltung.verein.mitglied.Mitglied $1 LEFT JOIN $1.mitgliedschaft $2 LEFT JOIN $2.abteilungen $3 LEFT JOIN $3.abteilung $4 WHERE (((NOT ((($2 IS NOT NULL) AND ($3 IS NOT NULL
3

ClassCastException in Tuple.get

.from(DemandAnswer.class); Join<DemandAnswer, Demand> joinDemand = rootDemandAnswer.join("demand"); Join<Object, Object> joinDemandingPerson = joinDemand.join("demandingPerson"); Join<Object, Object> joinProvidingPerson = rootDemandAnswer.join("providingPerson"); joinDemand.join

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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