public interface DataObject extends Serializable
| Modifier and Type | Method and Description |
|---|---|
Object |
clone()
Perform a deep copy of this object.
|
boolean |
isReadOnly()
Check if this object has been set read-only.
|
void |
setReadOnly()
Set this object to be "read-only".
|
Object clone()
Inherently immutable objects may optionally return the same object without modification from clone(), rather than constructing a new instance.
void setReadOnly()
Note that a read-only object is not necessarily immutable; if reference types are returned from accessors, then callers could theoretically mutate those objects even if the top-level object is marked as read-only. The ability to make objects read-only is intended to catch programming errors (e.g. attempting to modify a data object passed as part of a SLEE event), not to provide an absolute guarantee of immutability.
Calling setReadOnly() on an object that is already read-only is a no-op.
Some DataObject implementations may be inherently immutable. In those cases, they are considered always read-only.
boolean isReadOnly()
setReadOnly()