[
http://opensource.atlassian.com/projects/hibernate/browse/HHH-2339?page=all ]
Alexey Romanchuk updated HHH-2339:
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Attachment: hhh2339.zip
Set of files to reproduce bug
merge instumented class fails
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Key: HHH-2339
URL:
http://opensource.atlassian.com/projects/hibernate/browse/HHH-2339
Project: Hibernate3
Type: Bug
Components: core
Versions: 3.2.1, 3.2.0.ga
Environment: Hibernate 3.2.1 (tested with 3.2.0 too)
Postgresql 8.1.4
Reporter: Alexey Romanchuk
Priority: Blocker
Attachments: hhh2339.zip
When we try to merge instrumented detached entity with lazy no-proxy many-to-one
association we have org.hibernate.LazyInitializationException.
It occurs because cascade try to process all associations in Cascade class, but object
disconected from session and can not obtaion lazy property.
If classes are not instrumented all works ok.
Why merge action does not have overrided performOnLazyProperty mathod to prevent fetching
lazy properties?
Here it is small example that illustates problem.
===MAPPING===
<hibernate-mapping>
<class name="Client" table="test_client">
<id name="id" column="id" type="long">
<generator class="sequence">
<param name="sequence">test_seq</param>
</generator>
</id>
<property name="name" column="name"/>
<many-to-one name="info" class="LoginInfo"
lazy="no-proxy" column="info_id" cascade="merge,evict"/>
</class>
<class name="LoginInfo" table="test_login_info">
<id name="id" column="id" type="long">
<generator class="sequence">
<param name="sequence">test_seq</param>
</generator>
</id>
<property name="login" column="login"/>
<property name="pass" column="pass"/>
</class>
</hibernate-mapping>
===JAVA===
===DOMAIN===
public class Client
{
private long id;
private String name;
private LoginInfo info;
//getters and setters
}
public class LoginInfo
{
private long id;
private String login;
private String pass;
//getters and setters
}
===USAGE===
public class Main
{
public static void main( String[] args )
{
Session s1 = sf.openSession();
s1.beginTransaction();
Client c = ( Client ) s1.get( Client.class, 2l );
s1.flush();
s1.getTransaction().commit();
s1.close();
Session s2 = sf.openSession();
s2.beginTransaction();
c = ( Client ) s2.merge( c );
s2.flush();
s2.getTransaction().commit();
s2.close();
}
}
==STACKTRACE===
org.hibernate.LazyInitializationException: session is not connected
at
org.hibernate.intercept.AbstractFieldInterceptor.intercept(AbstractFieldInterceptor.java:67)
at
org.hibernate.intercept.cglib.FieldInterceptorImpl.readObject(FieldInterceptorImpl.java:75)
at Client.$cglib_read_info(Client.java)
at Client.getInfo(Client.java:12)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at
org.hibernate.property.BasicPropertyAccessor$BasicGetter.get(BasicPropertyAccessor.java:145)
at
org.hibernate.tuple.entity.AbstractEntityTuplizer.getPropertyValue(AbstractEntityTuplizer.java:277)
at
org.hibernate.persister.entity.AbstractEntityPersister.getPropertyValue(AbstractEntityPersister.java:3529)
at org.hibernate.engine.Cascade.cascade(Cascade.java:130)
at
org.hibernate.event.def.DefaultMergeEventListener.cascadeOnMerge(DefaultMergeEventListener.java:407)
at
org.hibernate.event.def.DefaultMergeEventListener.entityIsDetached(DefaultMergeEventListener.java:266)
at
org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:120)
at
org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:53)
at org.hibernate.impl.SessionImpl.fireMerge(SessionImpl.java:677)
at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:661)
at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:665)
at Main.main(Main.java:56)
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