21 | Performance issues on aggregate query objectNameUpper; @OneToOne @Index public ObjectType objectType; @Index public Integer state; public Map<String ... ArrayList<ObjectNode>(); @OneToOne(fetch=FetchType.LAZY) //@Index public ObjectNode currentLocation; @OneToOne(fetch=FetchType.LAZY) @Index public ObjectNode currentOperation; @OneToMany(fetch=FetchType.LAZY |
21 | significant performance decrease nodeToProcess; @Index public String objectName; @OneToOne public ObjectType objectType ... ArrayList<ObjectNode>(); @OneToOne(fetch=FetchType.LAZY) public ObjectNode currentLocation; @OneToOne(fetch=FetchType.LAZY) public ObjectNode currentOperation; @OneToMany |
21 | Left join fetch behaviour doesn't retrieve children?. This just break the test ! Test by yourself by adding / removing the mappedBy on the OneToOne annotation ... ) { this.name = name; } // @OneToOne(targetEntity = MyEntityChild2.class) @OneToOne ... again :( ). Here is the test case : 1- Create 100 000 entities with for each 1 entity with @OneToOne |
15 | General Performance Issues Illustrated with a Specific Method; import javax.persistence.ManyToOne; import javax.persistence.OneToOne; import javax.persistence.Table ... ) private Long id; private static final long serialVersionUID = 1L; @Index @OneToOne |
15 | Performance issue in a query due to compareTo calls private Map<Integer, String> values = new HashMap<>(); @OneToOne (fetch = FetchType.LAZY ... private long stepNumber; @OneToOne (fetch = FetchType.EAGER) private TCStep step ... Identifiable { @OneToOne (fetch = FetchType.EAGER) private TCStep step; btc_es BTC |
5 | PrimaryKeyJoinColumn.referencedColumnName key column for the table for the referencing entity (OneToOne mapping). Default value: "" Since: JPA 1.0 |
5 | javax.persistence.FetchType ElementCollection ManyToMany OneToMany ManyToOne OneToOne FetchType EAGER Defines that data |
5 | javax.persistence.AssociationOverrides protected Integer version; @ManyToOne protected Address address; @OneToOne protected |
5 | javax.persistence.MapsIdjavax.persistence Annotation MapsId Target: Fields (including property get methods) Designates a ManyToOne or OneToOne relationship attribute that provides the mapping for an EmbeddedId primary key, an attribute within an EmbeddedId primary key, or a simple primary key of the parent entity |
3 | ArrayIndexOutOfBoundException CacheableJobStat { @OneToOne(fetch = FetchType.EAGER) private CacheableJobInfo ji; @OneToOne(fetch ... , but explicitly by calling persist. The problem dissapeared when removing the @OneToOne(fetch = FetchType |
