| Interface | Description | 
|---|---|
| JRGroupListener | 
 The interface for objects needs a group of records when paging process. 
 | 
| JRObjectEditor | 
 This object is an optional interface. 
 | 
| JRObjectRender | 
 This interface provides the method which is used to paint the UDO to a report. 
 | 
| JRObjectResultCreator | 
 This interface will take Logi Report's Report Record as input parameters 
 and produce the UDO's JRObjectResult. 
 |