Versioned on class
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When you set Versioned on a class we never use sql-command-update or delete for that class. Instead we use insert with TimeStampStart and TimeStampStop added as non-attribute-db-columns. | When you set Versioned on a class we never use sql-command-update or delete for that class. Instead we use insert with TimeStampStart and TimeStampStop added as non-attribute-db-columns. | ||
You can now track all the changes done on an object - and retrieve old versions of that object with operators like [[OCLOperators allInstancesAtTime|allInstancesAtTime]], [[OCLOperators atTime|atTime]] | You can now track all the changes done on an object - and retrieve old versions of that object with operators like [[OCLOperators allInstancesAtTime|allInstancesAtTime]], [[OCLOperators atTime|atTime]], [[OCLOperators objectTimeStamp|objectTimeStamp]] | ||
Revision as of 10:31, 20 February 2022
When you set Versioned on a class we never use sql-command-update or delete for that class. Instead we use insert with TimeStampStart and TimeStampStop added as non-attribute-db-columns.
You can now track all the changes done on an object - and retrieve old versions of that object with operators like allInstancesAtTime, atTime, objectTimeStamp
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