Design Patterns for DAO & VO

Greenhorn

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posted 21 years ago

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What GoF design pattern(s) does Data Access Object exhibit?
Proxy?
What GoF design pattern(s) does Value Object exhibit?
Memento?
Any idea?

Alex Pisarev

Ranch Hand

Posts: 49

posted 21 years ago

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Originally posted by Daniel CarMichael:
What GoF design pattern(s) does Data Access Object exhibit?
Proxy?
What GoF design pattern(s) does Value Object exhibit?
Memento?
Any idea?

I think DAO is closer to Adapter (anyway, it's more strutural than creational). Value Object is also structural in nature, so in some cases it could be Composite, in most cases it's just a bean, nothing else. I do not think that Memento's usage strategy will work for VOs.

JiaPei Jen

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Posts: 1309

posted 21 years ago

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Could DAO be the Bridge Pattern? :roll:

Richard Li

Greenhorn

Posts: 1

posted 19 years ago

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DAO = Bridge + Adapter
The Adapter part is in the implementator of the Bridge.
Often created by Abstract Factory or Factory Method.

more detail, see the sun web site plz.

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