4.2. Finding Out about an Object's State
The previously mentioned seven states transient, persistent-new, persistent-new-deleted, hollow, persistent-clean, persistent-dirty, and persistent-deleted are mandatory for all JDO implementations, although there is no API to get the internal state of an instance used within the JDO implementation. The exact state of a JDO instance is known only by the JDO implementation, and some states might not even be implemented by some vendors. The JDO states are defined in a behavioral manner. Nevertheless, some methods let us interrogate the persistence attributes coupled with the object and find information about the object's state.
These static methods are in the JDOHelper class:
boolean isDeleted(Object o) ...
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