| | 1 | (This discussion refers to ticket #3) |
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| | 3 | Referential Integrity (the term used for this property in AllegroCache) refers to the property of a database that ensures when the referent of a reference is deleted from the database, the referrer is properly updated. That is to say, if I have a persistent slot S of an instance A that contains the oid reference of another instance, B and B is deleted from the database, what then is the value of S? |
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| | 5 | Currently Elephant creates an object for which references to any of its members will be unbound. One solution is to have a status slot in each persistent object that determines whether that object is valid. A proxy 'null' object is created that fails to satisfy a predicate valid-object-p that all valid objects satisfy. |
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| | 7 | Another option is to roll this in with an oid-class table (Ticket #25). When an object is deleted the class table points to a common "null object". We'd have to think about what the default behavior is for this object on creation, etc. |
| | 8 | |
