Hi,
i have an interface IMyImage and its implementation in MyImageImpl.
MyImageImpl has @Bean-Fields which refer to the interface IMyResource.
IMyResource is implemented in MyResourceImpl.
But here the related code:
@Node(isInterface=true, jcrType="my:bag", discriminator=false)
public interface IMyBag {
//getter and setter defs for path, uuid and other
}
@Node(isInterface=true, jcrType="my:image", extend=IMyBag.class,
discriminator=false)
public interface IMyImage extends IMyBag {
IMyResource getImage();
void setImage(IMyResource resource);
//...
}
@Node(isInterface=true, jcrType="my:resource", discriminator=false)
public interface IMyResource {
InputStream getData();
void setData(InputStream data);
//...
}
@Node(jcrType="my:bagimpl", isAbstract=false, discriminator=false)
@Implement(interfaceName=IMyBag.class)
public class MyBagImpl implements IMyBag {
@Field(path = true)
private String path;
@Field(uuid=true)
private String UUID;
//...
}
@Node(jcrType="my:imageimpl", extend=MyBagImpl.class, discriminator=false)
@Implement(interfaceName=IMyImage.class)
public class MyImageImpl extends MyBagImpl implements IMyImage {
@Bean(jcrName="my:image", proxy=true,
converter=DefaultBeanConverterImpl.class)
protected IMyResource image;
public IMyResource getImage() {
return image;
}
public void setImage(IMyResource image) {
this.image = image;
}
//...
}
@Node(jcrType="my:resourceimpl", isAbstract=false, discriminator=false)
@Implement(interfaceName=IMyResource.class)
public class MyResourceImpl implements IMyResource {
@Field(jcrName="my:binarydata")
protected byte[] binarydata;
public byte[] getBinarydata() {
return binarydata;
}
public void setBinarydata(byte[] binarystream) {
this.binarydata = binarystream;
}
public InputStream getData() {
return new ByteArrayInputStream(this.binarydata);
}
public void setData(InputStream data) {
this.binarydata = FileUtils.toByteArray(data);
}
//...
}
When i insert such an image, OCM works pretty fine.
Applying an update on that inserted image results to the following
exception:
Repository access exception; nested exception is
org.apache.jackrabbit.ocm.exception.IncorrectPersistentClassException:
Class of type: java.lang.Object has no descriptor.
org.springmodules.jcr.JcrSystemException: Repository access exception;
nested exception is
org.apache.jackrabbit.ocm.exception.IncorrectPersistentClassException:
Class of type: java.lang.Object has no descriptor.
I have debugged OCM and found that
public static Class getBeanClass(Object bean)
{
Class beanClass = bean.getClass();
if (isProxy(beanClass))
{
//CGLIB specific
return beanClass.getSuperclass();
}
return beanClass;
}
in org.apache.jackrabbit.ocm.reflection.ReflectionUtils returns
java.lang.Object
for the field
protected IMyResource image;
The return value is used in ObjectConverterImpl to retrieve the
ClassDescriptor for the Bean:
ClassDescriptor classDescriptor =
mapper.getClassDescriptorByClass(ReflectionUtils.getBeanClass(object));
Of course there is no descriptor for java.lang.Object.
When i implement the same structure with concrete classes, OCM works fine.
The relevant technology-stack:
+ jackrabbit 1.6.0 with ocm 1.5.3
+ spring 2.5.6
+ springmodules 0.9 - with patch from
http://jira.springframework.org/browse/MOD-446
+ tomcat 6.0.18
+ cglib
How can i improve my code or maybe OCM self to get done the update-thing
with interfaces?
Any advice is welcome.
Thanks in advance,
Kadir.
