25 lines
651 B
Markdown
25 lines
651 B
Markdown
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---
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layout: pattern
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title: Data Mapper
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folder: data-mapper
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permalink: /patterns/data-mapper/
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categories: Architectural
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tags:
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- Decoupling
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---
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## 含义
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一个用于在持久化对象和数据库之间传输数据的映射器，同时保持它们之间和映射器本身的独立性。
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## 类图
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## 适用场景
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数据映射器适用于以下场景：
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* 当你想把数据对象从数据库访问层解耦时时
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* 当你想编写多个数据查询/持久化实现时
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## 引用
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* [Data Mapper](http://richard.jp.leguen.ca/tutoring/soen343-f2010/tutorials/implementing-data-mapper/)
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