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Help understanding Entity behavior with JPA

Hi Support,   We have a entity with an @Id entity which we then put into a list and store in an different entity inside a field defined as:   @OneToOne(orphanRemoval=true, cascade=CascadeType.ALL, fetch=FetchType.EAGER) private Object payload; the list that we put in the 'payload' is an java.util
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how to query by properties of onetomany relations? (Error 990)

(cascade=CascadeType.PERSIST)         private Set bars = new HashSet();     }     @Entity
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Insertion Speed Rate and Batch Load

>       <cascade-persist
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LEFT (OUTER) JOIN problem when mappedBy is defined

, orphanRemoval=true, cascade= CascadeType.ALL) private List itemList = new ArrayList
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LifeCycle Event with Embeddable classes

Hello, is there a way that lifecycle events like prepersist or preupdate are also fired for embeddable classes, not just for entities? My case looks as follows: @Entity public class Foo { @Id @GeneratedValue private Long id; private String description; @OneToMany(cascade
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List always null

", cascade = CascadeType.PERSIST)     private List noticias; I'm trying to save an object
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locks on pure query activities

serialization="false" /> <cascade-persist always="auto" on-persist="false" on-commit="true" />
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Mapped By Fetch is very Slow

MyEntityChild entityChild = null;   @OneToOne(targetEntity = MyEntityChild.class, cascade = CascadeType
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Navigation through lazy loading from Detached Objects

{         @Id int id;         String str;                 @OneToMany(cascade=CascadeType.PERSIST
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NullPointer running multiple client against server

.UTY.visitRefs(UTY.java:1143) at com.objectdb.o.TVS.j(TVS.java:169) at com.objectdb.o.TVS.cascade