====== Design Patterns ======
===== Common Patterns =====

  * [[DAO]] - Data Access Object.  Objects which handle storage of data e.g. in a database
  * [[TemplatePattern|Template]] - Dividing interface from implementation

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  * [[Separation Of Concerns]]


A design pattern usually consists of:


  * **a name** - the identifier for the pattern.  Any aliases must also be listed. \\
  * **a goal** - what the pattern aims to achieve (sometimes described as forces) \\
  * **the description** - describes how the pattern works \\
  * **the implementation** - making the pattern work in practice \\
  * **cases** - successful applications of the pattern

===== The Description =====

Consists of:
  * **participants** - the objects that interact


[[Cross Cutting Concern]]

[[http://java.sun.com/developer/technicalArticles/J2EE/patterns/]]