Re: subclassing action
same Mohan Radhakrishnan wrote: Hi, I am looking for information on subclassing actions. Is there a way to transfer control to the subclass if a certain check in the super action is valid ? Is this how this is done ? In normal OO, it happens based on polymorphism. How is it done with struts ? Thanks, Mohan -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: subclassing action
On Mon, 2 Dec 2002, Mohan Radhakrishnan wrote: Date: Mon, 2 Dec 2002 11:51:27 +0530 From: Mohan Radhakrishnan [EMAIL PROTECTED] Reply-To: Struts Users Mailing List [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: subclassing action Hi, I am looking for information on subclassing actions. Is there a way to transfer control to the subclass if a certain check in the super action is valid ? Is this how this is done ? In normal OO, it happens based on polymorphism. How is it done with struts ? A common technique in Struts based apps is to have a common base Action that embeds functionality common to a set of your application's requirements, such as customized login checking. The general pattern would be to have the common base class implement the public execute() method (in 1.0 it was perform()), and then dispatch to business logic in some other (usually protected) methods defined by the base class. You can also do things like dynamically choose which business logic method to call, based on request parameters. This use case is so common that Struts provides a standard base class (org.apache.struts.actions.DispatchAction) for you. Thanks, Mohan Craig -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: subclassing action
Hi We are using a standard base action but in this case the logic to decide which perform method to call is based on a check in one of the action's perform method. 1. Call Action1 - Show reports the normal way. 2. If reports are to be scheduled , call Action 2. Action2 can be a sub-class of Action1 ? 3. Action2's perform method should be called. Action1 and Action2 differ . So Action2 is a subclass of Action1. Mohan -Original Message- From: Craig R. McClanahan [mailto:[EMAIL PROTECTED]] Sent: Monday, December 02, 2002 10:27 PM To: Struts Users Mailing List Subject: Re: subclassing action On Mon, 2 Dec 2002, Mohan Radhakrishnan wrote: Date: Mon, 2 Dec 2002 11:51:27 +0530 From: Mohan Radhakrishnan [EMAIL PROTECTED] Reply-To: Struts Users Mailing List [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: subclassing action Hi, I am looking for information on subclassing actions. Is there a way to transfer control to the subclass if a certain check in the super action is valid ? Is this how this is done ? In normal OO, it happens based on polymorphism. How is it done with struts ? A common technique in Struts based apps is to have a common base Action that embeds functionality common to a set of your application's requirements, such as customized login checking. The general pattern would be to have the common base class implement the public execute() method (in 1.0 it was perform()), and then dispatch to business logic in some other (usually protected) methods defined by the base class. You can also do things like dynamically choose which business logic method to call, based on request parameters. This use case is so common that Struts provides a standard base class (org.apache.struts.actions.DispatchAction) for you. Thanks, Mohan Craig -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: subclassing action
Hi, I figured that action mappings can be used to transfer control and the OO stuff should be left to the struts framework. Thanks, Mohan -Original Message- From: Mohan Radhakrishnan [mailto:[EMAIL PROTECTED]] Sent: Monday, December 02, 2002 11:51 AM To: [EMAIL PROTECTED] Subject: subclassing action Hi, I am looking for information on subclassing actions. Is there a way to transfer control to the subclass if a certain check in the super action is valid ? Is this how this is done ? In normal OO, it happens based on polymorphism. How is it done with struts ? Thanks, Mohan -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
