Hi,
I have following object child relationship. All the objects are getting
saved properly but when I try to fetch child object I am getting *null*.
This error is not because of lazy loading as I am accessing the child before
closing the PersistentManager.
============ Parent Object Class ==============
@PersistenceCapable(identityType = IdentityType.APPLICATION)
public class Block implements Serializable {
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Long block_id;
@Persistent(dependent = "true")
private BlockModule block_module;
....
....
============= Child class hierarchy ============
@PersistenceCapable(identityType = IdentityType.APPLICATION)
@Inheritance(customStrategy = "*complete-table*")
@Discriminator(strategy = DiscriminatorStrategy.CLASS_NAME)
public *abstract *class BlockModule extends Serializable{
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
protected Key key;
public *abstract *String getTitle(HttpServletRequest req);
public *abstract *String getContent(HttpServletRequest req);
}
@PersistenceCapable(identityType = IdentityType.APPLICATION)
public class BlockTextHTML extends BlockModule{
@Persistent
private String block_title;
@Persistent
private String block_content;
....
....
I test by putting BlockTextHTML as child object of Block.
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Google App Engine for Java" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/google-appengine-java?hl=en
-~----------~----~----~----~------~----~------~--~---
