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General Performance Issues Illustrated with a Specific Method

.persistence. CascadeType ; import javax.persistence.Entity; import javax.persistence.FetchType; import javax ... (cascade = CascadeType .ALL,fetch = FetchType.EAGER) private Person person; @Index private String phn

How to delete M2M relationship?

= CascadeType .ALL)     @Cascade(org.hibernate.annotations. CascadeType .ALL)  

@Column( name = "columnName") doesn't work

, cascade = CascadeType .ALL) @Column( name = "DATA_ITEMS" ) private List dataItems; @OneToOne(fetch = FetchType.LAZY, cascade = CascadeType .ALL) private AfwCodedDataBlock codedDataBlock; private int level

significant performance decrease

) public List precessors = new ArrayList (); @OneToMany(fetch=FetchType.LAZY,cascade= CascadeType .REMOVE ... = new ArrayList (); @OneToMany(fetch=FetchType.LAZY,cascade= CascadeType .REMOVE) public List

can't get HashMap out of the database

signingDate;     @OneToMany(fetch=FetchType.EAGER, cascade= CascadeType ... .EAGER, cascade= CascadeType .ALL)     private ArrayList guests = new ArrayList

Mapped By Fetch is very Slow

: The entity : import javax.persistence. CascadeType ; import javax.persistence.Entity; import javax ... = null;   @OneToOne(targetEntity = MyEntityChild.class, cascade = CascadeType .ALL,mappedBy

Problem with @Basic(fetch = FetchType.LAZY)

with @OneToOne(fetch = FetchType.LAZY, cascade = CascadeType .ALL)     private LargeString description;     @OneToOne(fetch = FetchType.LAZY, cascade = CascadeType .ALL)   

Error 613 - i cant put a list into a Squad object

before commit. Annotate the athletes collection using  @OneToMany(cascade= CascadeType .PERSIST). Annotate the athletes collection using @OneToMany(cascade= CascadeType .ALL). Set global automatic

LAZY @ManyToOne field functions as EAGER

; @ManyToOne(fetch=FetchType.LAZY, cascade= CascadeType .ALL)         C ... ; @ManyToOne(fetch=FetchType.EAGER, cascade= CascadeType .ALL)         C

Object explorer cannot open odb file. ObjectDB many-to-many relationship

{     @Id @ManyToOne(cascade = CascadeType .ALL, optional = false)     private User user;         @Id @ManyToOne(cascade = CascadeType

ObjectDB Explorer don't show ManyToOne relations

;@ManyToOne (targetEntity = ModelElementImpl.class, cascade = { CascadeType .REFRESH}) private ModelElement ... ;@ManyToOne (targetEntity = ModelElementImpl.class, cascade = { CascadeType .REFRESH}) private

Database Inconsistency or corruption

(cascade=javax.persistence. CascadeType .ALL, fetch =   javax.persistence.FetchType.EAGER ... .persistence.OneToOne(      cascade=javax.persistence. CascadeType .ALL,  

GWT RPC is throwing serialization exception when I have object db date value

you! But now I have to set fetchtype and cascadetype explicit (which is no problem), otherwise the List will alway be empty after detaching. @OneToMany(fetch = FetchType.EAGER, cascade = CascadeType

A lot of ENT and SIV instances which are not cleared by GC

another ones. Also I've added cascade= CascadeType .DETACH or  CascadeType

Why are my Map entries not stored?

, cascade= CascadeType .ALL, mappedBy = "ticket",     orphanRemoval=true ... = FetchType.EAGER, cascade= CascadeType .ALL, orphanRemoval=true) @MapKey(name="state") @MapKeyEnumerated

Is there any restriction when using fetch=FetchType.LAZY ?

am using in object declaration @OneToMany(fetch=FetchType.EAGER, cascade = CascadeType .ALL) private ... @OneToMany(fetch=FetchType.LAZY, cascade = CascadeType .ALL) private LinkedList referencedObj

Detaching objects after JOIN FETCH

.LAZY, cascade = CascadeType .ALL) List aClasses; } Now, I want to fetch all B classes ... thought, that after join fetch and CascadeType .DETACH list of A classes should be accessible from B

Foreign key constraint issue

(cascade = { CascadeType .MERGE, CascadeType .REMOVE}, mappedBy = "parent", orphanRemoval = true)  

Lazy loading does not work - crud takes long

; @OneToMany(cascade = CascadeType .ALL, orphanRemoval = true, mappedBy="project",fetch = FetchType.LAZY)   ... = CascadeType .ALL, orphanRemoval = true, mappedBy="project",fetch = FetchType.LAZY)    

OEM enhancing

Hello, I have question regarding OEM licence enhancement. @OneToMany(fetch = FetchType.EAGER, cascade = CascadeType .ALL) private SomeClass[] props; @OneToMany(fetch = FetchType.EAGER, cascade = CascadeType .ALL) private Map vars = new TreeMap (); Are these classes(SomeClass, SomeClass2), when not

Weird behaviour with enhanced classes and embedded entities

.ThreadPoolExecutor; import java.util.concurrent.TimeUnit; import javax.persistence. CascadeType ... ; int    id;     @OneToMany(cascade = CascadeType .ALL, fetch = FetchType

Cannot sort descending, when ordering by caluculated float in a method

{         @OneToMany(cascade= CascadeType .PERSIST)    ... = FetchType.EAGER, orphanRemoval=true, cascade= CascadeType .ALL) private List itemList = new ArrayList

Remove not working

(); emf.close(); } @Entity public static class A { @OneToMany(mappedBy="a", cascade= CascadeType

Issue with orphanRemoval and multiple EntityManagers

;   @OneToMany(cascade= CascadeType .ALL, fetch=FetchType.EAGER, orphanRemoval=true)  

_PersistenceException: Type is not found on getSingleResult.

= "estudiante", cascade = CascadeType .ALL, orphanRemoval = true)     private List

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 = CascadeType .ALL, fetch

Performance and memory usage of queries

.persistence. CascadeType ; import javax.persistence.ElementCollection; import javax.persistence.Entity

Query over the keySet of a map field with collection parameter

; } @OneToMany (cascade = CascadeType .ALL) public Map map = new HashMap (); } @Entity public static class

TemporalType injection with Calendar using JPA

(TimePeriod id) { this.id = id; }   @OneToMany(cascade=javax.persistence. CascadeType .ALL,fetch=javax

OneToMany and cascade delete problem

= Offer.class, mappedBy = "product", fetch = FetchType.LAZY, cascade = CascadeType .ALL) private Set offers

Storing objects problem

adding an annotation to a reference:   @OneToMany(cascade= CascadeType .PERSIST)   

Does ObjectDB support lazy loading?

A { @Id @GeneratedValue Long id; @OneToMany(fetch=FetchType.LAZY, cascade= CascadeType .ALL) List list

OrphanRemoval not working?

Dear all, I have entities Invoice and InvoiceItem, their relation is defined: public class Invoice implements Serializable { ... @OneToMany(mappedBy="invoice", fetch=FetchType.EAGER,              orphanRemoval=true, cascade= CascadeType

Performance issue in a query due to compareTo calls

= CascadeType .REMOVE) private Values valuesRef; }   @Index (members = {"step.stepNumber"}) @Entity

Database(*.odb) file size on disk

; import javax.persistence. CascadeType ; import javax.persistence.Entity; import javax.persistence

Beginners questions

= CascadeType .ALL, mappedBy="VERLAG_ID") private List users; Table "EBUser": @Entity(name="USER

Broken @ManyToOne reference

Hi, I have objects of type A belonging to objects of type B, defined as follows: @MappedSuperclass public abstract class A { @Id @ManyToOne(fetch = FetchType.EAGER, cascade= CascadeType .ALL, optional=false) private B b; @Id @Column(length = 36) private String stringId; } @MappedSuperclass public

Bidirectional OneToMany is slow on updated items

: @OneToMany(cascade = { CascadeType .ALL}, fetch = FetchType.LAZY/*, mappedBy = "person"*/) private Set

TreeSet and compareTo() issue

valid:     @OneToMany(fetch = FetchType.EAGER, cascade= CascadeType .PERSIST

Global way to set Lazy-loading fetch functionality for all the fields

Hi, for cascading persist, I have 3 choices: - Either locally (@OneToOne(cascade= CascadeType .PERSIST)) - Either at objectdb level ( ) - Either at JPA global level (orm.xml).   For defining fetch policy, I know the local way to do it (@ManyToOne(fetch=FetchType.LAZY)). Is there any way

Persisting collection where members are subclasses

;         @OneToMany(cascade= CascadeType .PERSIST)    

Entity not removed 100%

When I remove an object from a class it get's removed but the other objects that had that object as an attribute still keep it although I am using @OneToMany(cascade= CascadeType .ALL) This is what it remains when I check the removed object from another object's attributes     Unknown

LEFT (OUTER) JOIN problem when mappedBy is defined

, cascade= CascadeType .ALL) private List itemList = new ArrayList (); private String name; public

NullPointer when accessing persistent field

as follows; @OneToMany(cascade= CascadeType .ALL, mappedBy="z_component") @MapKey(name="z_schemeName ... (cascade= CascadeType .ALL, mappedBy="z_aqera") @MapKey(name="z_registerId")     private

Once served to JSF page via @EJB query bean, many list fields are null (but same query ok after fresh persist in @PostConstruct)

ArrayList (); @OneToMany(mappedBy = "owner", cascade = CascadeType .ALL) public List getOwnedElements ... is to set the fetch type to EAGER: @OneToMany(mappedBy = "owner", cascade = CascadeType .ALL, fetch=FetchType

NullPointerException on TreeSet load

    public static class MyEntity {         @OneToMany(cascade= CascadeType ... {         @OneToMany(cascade= CascadeType .PERSIST, fetch = FetchType.EAGER)  

Freeze during save

{ @ManyToOne(cascade= CascadeType .PERSIST) MyNode parent; @OneToMany(cascade= CascadeType .PERSIST) List

ArrayIndexOutOfBoundsException on flush

(orphanRemoval=true, cascade= CascadeType .ALL) private Map _nodes; The TaskNode contains a further Entity

[ObjectDB 2.2.5_02] Unexpected exception (Error 990) com.objectdb.o.InternalException: java.lang.NullPointerException: null

; } @OneToMany(cascade=javax.persistence. CascadeType .ALL,fetch=javax.persistence.FetchType.EAGER

Navigation through lazy loading from Detached Objects

;           @OneToMany(cascade= CascadeType .PERSIST)