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One of the major design features of OpenACS 5.6.0 is the explicit representation -of object identity. The reason I say "explicit -representation" is because the concept of object identity has been -======= -
One of the major design features of OpenACS 5.6.0 is the explicit representation of object identity. The reason I say "explicit representation" is because the concept of object identity has been ->>>>>>> 1.47 around forever. It is inherent to our problem domain. Consider the example of 3.x style scoping. The 3.x data models use the triple (user_id, group_id, scope) to identify an object. In the 5.6.0 data model this @@ -43,8 +32,4 @@ even capable of fully tracking the history of membership state.
The design choice of explicitly representing object identity with an integer primary key that is derived from a globally unique sequence is the key to eliminating redundant code and replacing it with generic object -<<<<<<< object-identity.html -level services.