Toplink....lazy fetching not working

Question

Case description is as follows:
PollDio has a many-to-one relation with UserDio
UserDio has many-to-many relation with ReviewDio
When I try to reterive a PollDio, data from UserDio and ReviewDio are also fetched. I want data from PollDio only. To avoid the UserDio and Review entity, I used Lazy fetching.
I get the following exception when I try to run the program:
Exception [TOPLINK-60] (Oracle TopLink Essentials - 2.0 (Build b58a-rc2 (08/09/2007))): oracle.toplink.essentials.exceptions.DescriptorException Exception Description: The method [_toplink_setuser_vh] or [_toplink_getuser_vh] is not defined in the object [com.project.web122.persistence.PollDio]. Internal Exception: java.lang.NoSuchMethodException: com.project.web122.persistence.PollDio._toplink_getuser_vh() Mapping: oracle.toplink.essentials.mappings.OneToOneMapping[user] Descriptor: RelationalDescriptor(com.project.web122.persistence.PollDio --> [DatabaseTable(POLLS)])
Runtime Exceptions:
Am using the following:
toplink-essentials.jar - Implementation-Version: 2.0-b58a-rc2 (08/09/2007)
toplink-essentials-agent.jar - Implementation-Version: 2.0-b41-beta2 (03/30/2007)
The entity classes have the following entries:
@Entity(name = "PollDio")
public class PollDio implements Serializable
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name= "UID",nullable=false,referencedColumnName="ID")
public UserDio getUser()
return user;
@Entity(name = "UserDio")
public class UserDio
@ManyToMany(mappedBy = "users", fetch=FetchType.LAZY)
public Set<ReviewDio> getReviews()
return reviews;
@OneToMany(mappedBy="user", fetch=FetchType.LAZY)
public Set<PollDio> getPolls()
return polls;
@Entity
public class ReviewDio
@ManyToMany(targetEntity = UserDio.class)
@JoinTable(name = "REVIEW_USER", joinColumns = @JoinColumn(name = "REVIEW_ID", referencedColumnName = "ID"), inverseJoinColumns = @JoinColumn(name = "USER_ID", referencedColumnName = "ID"))
public Set<UserDio> getUsers()
return users;
The persistence.xml file has the following entries:
<provider>oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider</provider>
<property name="toplink.logging.level" value="FINE"/>
<property name="toplink.weaving" value="true"/>
Please let me know, what rectification is required to make this work.
Thanks

Answer 1

Hello,
From your posting, I assume you believe this is related to the problem described in thread Toplink JPA... this should lazy load? . If you are running outside of a container, you need to list the Entity classes in the persistence.xml using the <class> tag for the provider to be able to load/weave them as apart of the persistence unit. This will also include non-entity classes such as MappedSuperclass and embedded classes.
If this isn't the issue you are running into, please provide the full stacktrace, the environment you are running in, and how you are using the agent for weaving.
Best Regards,
Chris