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form-backing object and command pattern

 
Akhilesh Trivedi
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I am a spring beginner. What is form-backing object ? I read about command pattern, how is it associated with this? Is it conceptual/logical or is there really something called a 'Form-backing' class, if so what it does? how is it related to HttpRequest and HttpResponse ?
 
Bill Gorder
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It binds the form data to your object so you dont have to parse all the form fields to get the values. The spring reference documenttion gives a good explanation.

http://static.springsource.org/spring/docs/3.1.1.RELEASE/spring-framework-reference/html/mvc.html#mvc-ann-modelattrib-method-args
 
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