CODEWITHSUNDEEP
javastruts2
TYS
TYS

Reputation: 195

Struts 2 action class instantiation

Is it possible to restrict the instantiation of a Struts2 action class to only one instance. Basically enforce the Singleton pattern on the action. I am extending the ActionSupport class.

Upvotes: 0

Views: 793

Answers (1)

Dave Newton
Dave Newton

Reputation: 160251

Technically, sure, I suppose--but the entire framework assumes an instance-per-request, is tested only as such, and I would predict only Very Bad Things if you did so.

Extending ActionSupport makes that situation even more dire, as everything it adds also assumes a single-instance-per-request. Things like error and info messages, for example, which obviously per-request, are instance properties--so you'd need to re-implement a fair chunk of ActionSupport to make it thread-safe.

Why would you want to do this, anyway?

Upvotes: 3

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