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org.hibernate.LazyInitializationException: failed to lazily initialize a collection while using lazy set with key as property-ref in the mapping

Description

I have an entity which can have multiple titles located in a separate table. I mapped this as a set where key attribute references other property of the entity:

<set name="titles" table="TTitle" cascade="none" lazy="true" inverse="true" mutable="false">
<key column="ID" property-ref="parentId"/>
<!--key column="ID"/-->
<element type="string" column="title"/>
</set>

when I try to display this set I get an exception:
org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: test.lazysetinit.Record.titles, no session or session was closed
at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:358)
at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:350)
at org.hibernate.collection.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:343)
at org.hibernate.collection.AbstractPersistentCollection.read(AbstractPersistentCollection.java:86)
...

The entire mapping is as follows:
<class name="Record" table="TRecord" mutable="false">
<id name="id" type="long">
<column name="ID" sql-type="number" length="12" not-null="true" unique="true"/>
</id>
<set name="titles" table="TTitle" cascade="none" lazy="true" inverse="true" mutable="false">
<key column="ID" property-ref="parentId"/>
<!--key column="ID"/-->
<element type="string" column="title"/>
</set>
<join table="TRecordInfo" inverse="true" fetch="join" optional="false">
<key column="ID"/>
<property name="parentId" not-null="false" />
<property name="status" />
</join>
</class>

Attached the test case: test.lazysetinit.LazySetInitTest. DB schema is located in test/conf/lazysetinit/schema.sql

Regards,
Artur

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Debapriya PatraApril 30, 2008 at 12:10 PM

If i will change from lazy="true" to lazy="false" it will not work.
I have tried with this and its giving me the same error..

Former userMarch 11, 2008 at 3:38 PM

Please use the user forum (http://forum.hibernate.org/) for help.

nh hockeyplayerMarch 10, 2008 at 9:01 PM

This one remains an issue for

<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate</artifactId>
<version>3.2.5.ga</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-commons-annotations</artifactId>
<version>3.3.0.ga</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-annotations</artifactId>
<version>3.3.0.ga</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>3.0.0.ga</version>
</dependency>

We have a persistence service that implements OpenSessionInView and works.

This stack trace though is one hard to crack.

Here is the guy that causes it

Organization.JAVA operates a collection
Organization--<>----Coach

Coach.JAVA extends from person.JAVA
Person--<----------Coach

Organization.JAVA
@OneToMany(cascade = CascadeType.ALL, fetch=FetchType.EAGER)
@JoinColumn(name = "coach_organization_fk", insertable = true, updatable = true, nullable = true)
@Collection(child = true, inverse = "organization")
@PropertyDescriptor(readOnly = false, searchable = true)
public Set<Coach> getCoaches()
{
return coaches;
}

No fix for this exists

cannot even go near the collection

Belto Nathankuty ThresammalNovember 10, 2006 at 8:21 AM

<set name="titles" table="TTitle" cascade="none" lazy="false" inverse="true" mutable="false">
<key column="ID" property-ref="parentId"/>
<!--key column="ID"/-->
<element type="string" column="title"/>
</set>

Change lazy="false"
Ithink it will work

Rejected

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Created October 26, 2006 at 5:58 PM
Updated April 30, 2008 at 12:10 PM
Resolved March 11, 2008 at 3:38 PM