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Alex Rivera
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Pros: Repositories hide complex queries. Repository methods can be used as transaction boundaries. ORM can easily be mocked Cons: ORM frameworks offer already a collection like interface to persistent objects, what is the intention of repositories. So repositories add extra complexity to the system. combinatorial explosion when using findBy methods. These methods can be avoided with Criteria objects, queries or example objects. But to do that no repository is needed because a ORM already supports these ways to find objects. Since repositories are a collection of aggregate roots (in the sense of DDD), one have to create and pass around aggregate roots even if only a child object is modified. Questions: What pros and cons do you know? Would you recommend to use repositories? (Why or why not?)
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