Re: [eclipselink-users] Virtual Metlhods | questions

[Gaurav Malhotra <gaurav.malhotra@xxxxxxxxxx>]

Tom,
  I when I enabled the oneToOneMapping.useBasicIndirection(); I started
failing with exception

  

Exception [EclipseLink-60] (Eclipse Persistence Services -
2.3.2.v20111125-r10461):
org.eclipse.persistence.exceptions.DescriptorException
Exception Description: The method [_persistence_set_phoneNumber_vh] or
[_persistence_get_phoneNumber_vh] is not defined in the object
[gridcache.model.Employee].
Internal Exception: java.lang.NoSuchMethodException:
gridcache.model.Employee._persistence_get_phoneNumber_vh(java.lang.String)
Mapping: org.eclipse.persistence.mappings.OneToOneMapping[phoneNumber]
Descriptor: RelationalDescriptor(gridcache.model.Employee -->
[DatabaseTable(TLG_GC_EMPLOYEE)])

Emploee to PhoneNumber (1-1)

Below is code to create OneToOneMapping
	private void oneToOneMapping(ClassDescriptor classDescriptor) {
		OneToOneMapping oneToOneMapping = new OneToOneMapping();
		oneToOneMapping.setDescriptor(classDescriptor);
		oneToOneMapping.setCascadeAll(true);
		oneToOneMapping.useBasicIndirection();
		
		VirtualAttributeAccessor virtualAttributeAccessor2 = new
VirtualAttributeAccessor();
		virtualAttributeAccessor2.setAttributeName("phoneNumber");
		virtualAttributeAccessor2.setGetMethodName("get");
		virtualAttributeAccessor2.setSetMethodName("set");
	
virtualAttributeAccessor2.initializeAttributes(classDescriptor.getJavaClass());
		
		oneToOneMapping.setAttributeAccessor(virtualAttributeAccessor2);
		oneToOneMapping.setAttributeName("phoneNumber");
		oneToOneMapping.setReferenceClass(PhoneNumber.class);
		oneToOneMapping.setForeignKeyFieldName("PHONE_NUMBER_ID");
		
		
		Vector<String> databaseFields = new Vector<String>();
		databaseFields.add("PHONE_NUMBER_ID"); 
		
		
		oneToOneMapping.setForeignKeyFieldNames(databaseFields);
		
		classDescriptor.getMappings().add(oneToOneMapping);
	}

Employee
My set and get in the Employee class looks like

public void set(String key,Object value) {
		if (PhoneNumber.class.isInstance(value)) {
			ValueHolderInterface valueHolderInterface = new ValueHolder();
			valueHolderInterface.setValue(value);
			extensions.put(key, valueHolderInterface);
			
		} else {
			extensions.put(key, value);
		}
	}

	public Object get(String key) {
		
		return ValueHolderInterface.class.isInstance(extensions.get(key)) ?
ValueHolderInterface.class.cast(extensions.get(key)).getValue() :
extensions.get(key);
	}



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