You can load the rules from the repository when you need them and unload the rules back into the repository when you do not need them.
您可以在需要这些规则时从储存库中加载它们，而在您不需要时将它们卸载回储存库。
2
Don't define an association for the sake of association; do so only when you need to load them together, which should be decided by your business rules and design (please see Example 5 for details).