Relation OneToOne strict

Version imprimable

Bonjour,

j'ai une relation OneToOne entre 2 entités via une table d'association :

Code:

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@Entity
@Table(name="table1")	
public class Table1 {
 
	@Id @GeneratedValue
	private int id;
 
	@Column(name="colTable1", nullable=false) 
	private String colTable1;
 
	@OneToOne(cascade=CascadeType.ALL, optional=false) 
        @JoinTable(name="associationtable",	
        joinColumns = @JoinColumn(name="idTable1"), 
        inverseJoinColumns = @JoinColumn(name="idTable2")
	private Table2 table2;
 
...
 
}

Code:

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@Entity
@Table(name="table2")	
public class Table2 {
 
	@Id @GeneratedValue
	private int id;
 
	@Column(name="colTable2", nullable=false)
	private String colTable2;
 
	@OneToOne(cascade=CascadeType.ALL, optional=false) 
        @JoinTable(name="associationtable",	
        joinColumns = @JoinColumn(name="idTable2"), 
        inverseJoinColumns = @JoinColumn(name="idTable1")
	private Table1 table1;
 
...
 
}

Je voudrais mettre au niveau hibernate une contrainte qui fasse que la relation OneToOne soit strict : c'est à dire ne plus avoir de possibilité d'enregistrer du zero-or-one <> zero-or-one quand on svgd table1 ou table2.

Comment faire ?
Merci.

05/11/2013, 23h28
mysianne

Je penses que tu dois ajouter un attribut mappedBy(...) au niveau d'une de tes annotations @OneToOne
06/11/2013, 07h23
tchize_

Met simplement un notnull sur tes deux champs.

Aussi, normalement, une des relations devrait être marquée l'inverse de l'autre, sinon hibernate ignore qui est responsable du stockage de l'information et ça deviens le bordel rapidement :)

Bonjour,

effectivement j'avais pas vu cette histoire de mappedBy ... Merci.
Du coup maintenant j'ai ça :

Code:

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@Entity
@Table(name="table1")	
public class Table1 {
 
	@Id @GeneratedValue
	private int id;
 
	@Column(name="colTable1", nullable=false) 
	private String colTable1;
 
	@OneToOne(cascade=CascadeType.ALL) 
        @JoinTable(name="associationtable",	
        joinColumns = @JoinColumn(name="idTable1"), 
        inverseJoinColumns = @JoinColumn(name="idTable2") 
        ) 
	@NotNull
	private Table2 table2;
 
....
}

Code:

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@Entity
@Table(name="table2")	
public class Table2 {
 
	@Id @GeneratedValue
	private int id;
 
	@Column(name="colTable2", nullable=false)
	private String colTable2;
 
	@OneToOne(cascade=CascadeType.ALL, mappedBy = "table2") 
        @NotNull
	private Table1 table1;
 
...
 
}

et lors d'une simple sauvegarde :

Citation:

Table1 table1 = new Table1();
table1 .setColTable1("11111");

Table2 table2 = new Table2();
table2.setColTable2("22222");

table1.setTable2(table2);
table2.setTable1(table1);

dao.save(table1);

j'ai l'erreur suivante :

Code:

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nov. 06, 2013 7:56:29 PM org.hibernate.action.internal.UnresolvedEntityInsertActions logCannotResolveNonNullableTransientDependencies
WARN: HHH000437: Attempting to save one or more entities that have a non-nullable association with an unsaved transient entity. The unsaved transient entity must be saved in an operation prior to saving these dependent entities.
	Unsaved transient entity: ([com.example.hibernateSpring03.model.Table1#0])
	Dependent entities: ([[com.example.hibernateSpring03.model.Table2#<null>]])
	Non-nullable association(s): ([com.example.hibernateSpring03.model.Table2.table1])
nov. 06, 2013 7:56:29 PM org.hibernate.action.internal.UnresolvedEntityInsertActions logCannotResolveNonNullableTransientDependencies
WARN: HHH000437: Attempting to save one or more entities that have a non-nullable association with an unsaved transient entity. The unsaved transient entity must be saved in an operation prior to saving these dependent entities.
	Unsaved transient entity: ([com.example.hibernateSpring03.model.Table2#0])
	Dependent entities: ([[com.example.hibernateSpring03.model.Table1#<null>]])
	Non-nullable association(s): ([com.example.hibernateSpring03.model.Table1.table2])
org.hibernate.TransientPropertyValueException: Not-null property references a transient value - transient instance must be saved before current operation: com.example.hibernateSpring03.model.Table1.table2 -> com.example.hibernateSpring03.model.Table2
	at org.hibernate.action.internal.UnresolvedEntityInsertActions.checkNoUnresolvedActionsAfterOperation(UnresolvedEntityInsertActions.java:135)
	at org.hibernate.engine.spi.ActionQueue.checkNoUnresolvedActionsAfterOperation(ActionQueue.java:251)
	at org.hibernate.internal.SessionImpl.checkNoUnresolvedActionsAfterOperation(SessionImpl.java:711)
	at org.hibernate.internal.SessionImpl.fireSave(SessionImpl.java:766)
....
....

Alors que si je met pas le @NotNull ça enregistre bien.

essaie

Code:

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Table1 table1 = new Table1();
table1 .setColTable1("11111");	
 
Table2 table2 = new Table2();
table2.setColTable2("22222");
 
 
table1.setTable2(table2);
table2.setTable1(table1);
 
 
dao.save(table2);
dao.save(table1);

comme dit le message, Table1.table2 doit être sauvé en premier

06/11/2013, 22h49
juju65

En essayant ça j'ai la même erreur mais pour table2 :

Citation:

org.hibernate.action.internal.UnresolvedEntityInsertActions logCannotResolveNonNullableTransientDependencies
WARN: HHH000437: Attempting to save one or more entities that have a non-nullable association with an unsaved transient entity. The unsaved transient entity must be saved in an operation prior to saving these dependent entities.
Unsaved transient entity: ([com.example.hibernateSpring03.model.Table2#0])
Dependent entities: ([[com.example.hibernateSpring03.model.Table1#<null>]])
Non-nullable association(s): ([com.example.hibernateSpring03.model.Table1.table2])
nov. 06, 2013 9:46:46 PM org.hibernate.action.internal.UnresolvedEntityInsertActions logCannotResolveNonNullableTransientDependencies
WARN: HHH000437: Attempting to save one or more entities that have a non-nullable association with an unsaved transient entity. The unsaved transient entity must be saved in an operation prior to saving these dependent entities.
Unsaved transient entity: ([com.example.hibernateSpring03.model.Table1#0])
Dependent entities: ([[com.example.hibernateSpring03.model.Table2#<null>]])
Non-nullable association(s): ([com.example.hibernateSpring03.model.Table2.table1])
nov. 06, 2013 9:47:00 PM org.apache.catalina.core.StandardWrapperValve invoke
Grave: Servlet.service() for servlet [appServlet] in context with path [/hibernateSpring03] threw exception [Request processing failed; nested exception is org.hibernate.TransientPropertyValueException: Not-null property references a transient value - transient instance must be saved before current operation: com.example.hibernateSpring03.model.Table1.table2 -> com.example.hibernateSpring03.model.Table2] with root cause
org.hibernate.TransientPropertyValueException: Not-null property references a transient value - transient instance must be saved before current operation: com.example.hibernateSpring03.model.Table1.table2 -> com.example.hibernateSpring03.model.Table2
at org.hibernate.action.internal.UnresolvedEntityInsertActions.checkNoUnresolvedActionsAfterOperation(UnresolvedEntityInsertActions.java:135)
at org.hibernate.engine.spi.ActionQueue.checkNoUnresolvedActionsAfterOperation(ActionQueue.java:251)
at org.hibernate.internal.SessionImpl.checkNoUnresolvedActionsAfterOperation(SessionImpl.java:711)
at org.hibernate.internal.SessionImpl.fireSave(SessionImpl.java:766)