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Object ewoluation.
I've made a Class named Person with one property "name".
I've made one instance and I've set value of property "name" to "Radek
Wisniewski".
I've added new property to class Person - "age", and new mathod "setAge"
and new method "age" for viewing value of age and I'v updated method
toString.
Now I've restartded server and I've invoked new method "age" (getting age)
for my old, previously created object Person.
I've got an error:
warning: ObjectState: proxy(): unable to create proper proxy object.
warning: Transaction: ta(-73) aborting... (java.io.IOException:
java.io.InvalidClassException: OsobaImpl; Local class not compatible:
stream classdesc serialVersionUID=-9118830836401245661 local class
serialVersionUID=2483986366787418531)
It mean that I can't use my old objects :((( if I change Class definition.
Why Ozone doesn't automatycaly update old Instances of the same Class if
it is changed?
It is inpossible or not implemented yet?
Does another ODBMS make such things?
Greetings,
Radek Wisniewski
/--------------A S I----------------/
/ Academical Society of Informatics /
/ Wroclaw University of Technology /
/____________Poland_________________/