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Is Spring JdbcTemplate expensive to create

 
Sonny Gill
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Hi,

How expensive is it to create a JdbcTemplate object?
Would creating it at the start of every method be too expensive (I guess it would) ?

Rod recommends keeping it as an instance variable in the DAO's since it is thread safe. What is the recommendation if you need to make a JDBC call in a model object that loads the data directly from the DB?

And while we are talking about Spring, has anybody tried using Spring MVC to generate Client side validation JavaScript. I remember reading a post made by Matt Riable once about it, but it did not appear very straight forward.

thanks

Sonny
 
It is sorta covered in the JavaRanch Style Guide.
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