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General Performance Issues Illustrated with a Specific Method

join v$1))">     <step vars="(v$1)+c" future="true">      ... complexity="15.8546" eval="4.95/6.30" filter="(c.person join v$1)">        

joinMap(attributeName)

;String attributeName) Create an inner join ... for the target of the join Returns: the resulting join Throws

joinCollection(attributeName)

"> Create an inner join to the specified Collection-valued attribute. join Returns: the resulting join

JoinColumn.referencedColumnName

key column is in the entity table of the owning entity, or inverse entity if the join is part of the inverse join definition. When used in a CollectionTable mapping ... > Default (only applies if single join column is being used): The same name as the primary key column

javax.persistence.criteria.CriteriaQuery

may need to specify the type of the select item when it results from a get or join operation ... ); q2.select(q2.from(Order.class) .join("items") .join("product

Issue with UPPER ?

.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.communication $6 ... $1 LEFT JOIN $1.mitgliedschaft $2 LEFT JOIN $1.profile $3 LEFT JOIN $3.organisation $4 LEFT JOIN $1

javax.persistence.JoinColumns

> The join columns that map the relationship. The join columns that map

PessimisticLockScope.EXTENDED

and relationships owned by the entity that are contained in join tables will be locked if the javax ... generally locks only the rows in the join table or collection table for that relationship or collection

PessimisticLockScope.NORMAL

. If a joined inheritance strategy is used, or if the entity is otherwise mapped to a secondary table ... to join tables or unidirectional one-to-many relationships for which the target entity contains

javax.persistence.MapKeyJoinColumns

> (Required) The map key join columns that are used to map ... "> (Required) The map key join columns that are used to map to the entity that is the map key