Intent++

data-mapper/index.md

@@ -1,26 +1,25 @@
----
+---
-layout: pattern
+layout: pattern
-title: Data Mapper
+title: Data Mapper
-folder: data-mapper
+folder: data-mapper
-permalink: /patterns/dm/
+permalink: /patterns/dm/
-categories: Persistence Tier
+categories: Persistence Tier
-tags:
+tags:
- - Java
+ - Java
- - Difficulty-Beginner
+ - Difficulty-Beginner
----
+---
-
+
-## Intent
+## Intent
-Object provides an abstract interface to some type of database or
+A layer of mappers that moves data between objects and a database while keeping them independent of each other and the mapper itself
-other persistence mechanism.
+
-
+![alt text](./etc/data-mapper.png "Data Mapper")
-![alt text](./etc/data-mapper.png "Data Mapper")
+
-
+## Applicability
-## Applicability
+Use the Data Mapper in any of the following situations
-Use the Data Mapper in any of the following situations
+
-
+* when you want to consolidate how the data layer is accessed
-* when you want to consolidate how the data layer is accessed
+* when you want to avoid writing multiple data retrieval/persistence layers
-* when you want to avoid writing multiple data retrieval/persistence layers
+
-
+## Credits
-## Credits
+
-
+* [Data Mapper](http://richard.jp.leguen.ca/tutoring/soen343-f2010/tutorials/implementing-data-mapper/)
-* [Data Mapper](http://richard.jp.leguen.ca/tutoring/soen343-f2010/tutorials/implementing-data-mapper/)