Re: best practice: how to handle two related jsp pages, with one having an ArrayList, the other input details
thanks. i saw some discussion earlier (search for "request against session"). It seems that people recommond not to use session scope forms. so out of these three, which is my best choice then: - Struts workflow extension - hidden field - session scope form many thanks ! --- Erik Weber <[EMAIL PROTECTED]> wrote: > Session scoped forms are one of my favorite things > about Struts. Seems > like you have a situation for them. > > Make sure you keep all session-scoped form fields > Serializable or mark > them as transient if they are not. > > Clever implementations of ActionForm.reset can make > memory management > easier. The "complication" is simply that you might > hold on to > references to objects that should have been garbage > once processing is > complete. > > If you don't use session scoped forms, you will > probably have to manage > objects using session scope one way or another, > unless you somehow use > hidden variables to specify "running" objects that > get recreated for > each request. > > Erik > > lixin chu wrote: > > >solution 1. persisting data may cause some > problems, > >for example performance, as users may need to > create a > >few detail objects. I prefer to keep these objects > in > >View and provide a 'Done' button, which will then > let > >Action to do the persistence. > > > >Another problem is that in my Use Case, the detail > >objects are associated to the parent object, which > >might not be persisted at this moment (because we > go > >to B.JSP before saving data in A.JSP). So i can not > >persist detail object first. > > > >some work needed to solve these. > > > >solution 2. I am not sure if Struts Workflow > extension > >is a good choice. It seems that it uses Session > scope > >for sharing data among a few JSP pages. > >What complication will it have ? > > > >thanks ! > > > > > > > >--- "Kataria, Satish" <[EMAIL PROTECTED]> > wrote: > > > > > > > >>It depends upon the architecture you want to > follow. > >>There are multiple > >>ways this can be done > >> > >>1. Create the 2 jsp as independent jsp. Thus the > >>list jsp jsp always > >>fetches from DB when we bring control to that. > >> Clicking add on the list jsp leads to the > >>adddetails jsp which submit > >>data to DB. > >> This is the most commonly used and I have seen > >>this being used > >>successfully in multiple applications > >>2. Create the 2 jsp as a wizard using struts > session > >>scope strategy. > >> This strategy has certain complications and is > >>generally > >>disadvantageous. > >> > >>Thanks, > >>Satish Kataria > >> > >> > >> > >>-Original Message- > >>From: lixin chu [mailto:[EMAIL PROTECTED] > >>Sent: Monday, August 16, 2004 4:59 AM > >>To: [EMAIL PROTECTED] > >>Subject: best practice: how to handle two related > >>jsp pages, with one > >>having an ArrayList, the other input details > >> > >> > >>Hi, > >>How should I handle this: > >> > >>I have 2 jsp, in a.JSP, I need to display an > >>ArrayList. When users click 'Add', B.JSP is > >>displayed > >>which allows users to fill in the details of a new > >>object. When users click 'Done', I need to return > >>back > >>to A.JSP, display the newly added object, and > >>ArrayList should be updated as well. > >> > >>What do I need to do to support this ? > >> > >>thank you very much > >>li xin > >> > >> > >> > >>__ > >>Do you Yahoo!? > >>New and Improved Yahoo! Mail - Send 10MB messages! > >>http://promotions.yahoo.com/new_mail > >> > >> > >> > >> > >- > > > > > >>To unsubscribe, e-mail: > >>[EMAIL PROTECTED] > >>For additional commands, e-mail: > >>[EMAIL PROTECTED] > >> > >> > >> > >> > >- > > > > > >>To unsubscribe, e-mail: > >>[EMAIL PROTECTED] > >>For additional commands, e-mail: > >>[EMAIL PROTECTED] > >> > >> > >> > >> > > > > > > > > > >__ > >Do you Yahoo!? > >Take Yahoo! Mail with you! Get it on your mobile > phone. > >http://mobile.yahoo.com/maildemo > > > >- > >To unsubscribe, e-mail: > [EMAIL PROTECTED] > >For additional commands, e-mail: > [EMAIL PROTECTED] > > > > > > > > > > - > To unsubscribe, e-mail: > [EMAIL PROTECTED] > For additional commands, e-mail: > [EMAIL PROTECTED] > > __ Do you Yahoo!? Yahoo! Mail Address AutoComplete - You start. We finish. http://promotions.yahoo.com/new_mail - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: best practice: how to handle two related jsp pages, with one having an ArrayList, the other input details
Session scoped forms are one of my favorite things about Struts. Seems like you have a situation for them. Make sure you keep all session-scoped form fields Serializable or mark them as transient if they are not. Clever implementations of ActionForm.reset can make memory management easier. The "complication" is simply that you might hold on to references to objects that should have been garbage once processing is complete. If you don't use session scoped forms, you will probably have to manage objects using session scope one way or another, unless you somehow use hidden variables to specify "running" objects that get recreated for each request. Erik lixin chu wrote: solution 1. persisting data may cause some problems, for example performance, as users may need to create a few detail objects. I prefer to keep these objects in View and provide a 'Done' button, which will then let Action to do the persistence. Another problem is that in my Use Case, the detail objects are associated to the parent object, which might not be persisted at this moment (because we go to B.JSP before saving data in A.JSP). So i can not persist detail object first. some work needed to solve these. solution 2. I am not sure if Struts Workflow extension is a good choice. It seems that it uses Session scope for sharing data among a few JSP pages. What complication will it have ? thanks ! --- "Kataria, Satish" <[EMAIL PROTECTED]> wrote: It depends upon the architecture you want to follow. There are multiple ways this can be done 1. Create the 2 jsp as independent jsp. Thus the list jsp jsp always fetches from DB when we bring control to that. Clicking add on the list jsp leads to the adddetails jsp which submit data to DB. This is the most commonly used and I have seen this being used successfully in multiple applications 2. Create the 2 jsp as a wizard using struts session scope strategy. This strategy has certain complications and is generally disadvantageous. Thanks, Satish Kataria -Original Message- From: lixin chu [mailto:[EMAIL PROTECTED] Sent: Monday, August 16, 2004 4:59 AM To: [EMAIL PROTECTED] Subject: best practice: how to handle two related jsp pages, with one having an ArrayList, the other input details Hi, How should I handle this: I have 2 jsp, in a.JSP, I need to display an ArrayList. When users click 'Add', B.JSP is displayed which allows users to fill in the details of a new object. When users click 'Done', I need to return back to A.JSP, display the newly added object, and ArrayList should be updated as well. What do I need to do to support this ? thank you very much li xin __ Do you Yahoo!? New and Improved Yahoo! Mail - Send 10MB messages! http://promotions.yahoo.com/new_mail - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] __ Do you Yahoo!? Take Yahoo! Mail with you! Get it on your mobile phone. http://mobile.yahoo.com/maildemo - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: best practice: how to handle two related jsp pages, with one having an ArrayList, the other input details
solution 1. persisting data may cause some problems, for example performance, as users may need to create a few detail objects. I prefer to keep these objects in View and provide a 'Done' button, which will then let Action to do the persistence. Another problem is that in my Use Case, the detail objects are associated to the parent object, which might not be persisted at this moment (because we go to B.JSP before saving data in A.JSP). So i can not persist detail object first. some work needed to solve these. solution 2. I am not sure if Struts Workflow extension is a good choice. It seems that it uses Session scope for sharing data among a few JSP pages. What complication will it have ? thanks ! --- "Kataria, Satish" <[EMAIL PROTECTED]> wrote: > It depends upon the architecture you want to follow. > There are multiple > ways this can be done > > 1. Create the 2 jsp as independent jsp. Thus the > list jsp jsp always > fetches from DB when we bring control to that. >Clicking add on the list jsp leads to the > adddetails jsp which submit > data to DB. >This is the most commonly used and I have seen > this being used > successfully in multiple applications > 2. Create the 2 jsp as a wizard using struts session > scope strategy. >This strategy has certain complications and is > generally > disadvantageous. > > Thanks, > Satish Kataria > > > > -Original Message- > From: lixin chu [mailto:[EMAIL PROTECTED] > Sent: Monday, August 16, 2004 4:59 AM > To: [EMAIL PROTECTED] > Subject: best practice: how to handle two related > jsp pages, with one > having an ArrayList, the other input details > > > Hi, > How should I handle this: > > I have 2 jsp, in a.JSP, I need to display an > ArrayList. When users click 'Add', B.JSP is > displayed > which allows users to fill in the details of a new > object. When users click 'Done', I need to return > back > to A.JSP, display the newly added object, and > ArrayList should be updated as well. > > What do I need to do to support this ? > > thank you very much > li xin > > > > __ > Do you Yahoo!? > New and Improved Yahoo! Mail - Send 10MB messages! > http://promotions.yahoo.com/new_mail > > - > To unsubscribe, e-mail: > [EMAIL PROTECTED] > For additional commands, e-mail: > [EMAIL PROTECTED] > > - > To unsubscribe, e-mail: > [EMAIL PROTECTED] > For additional commands, e-mail: > [EMAIL PROTECTED] > > __ Do you Yahoo!? Take Yahoo! Mail with you! Get it on your mobile phone. http://mobile.yahoo.com/maildemo - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: best practice: how to handle two related jsp pages, with one having an ArrayList, the other input details
It depends upon the architecture you want to follow. There are multiple ways this can be done 1. Create the 2 jsp as independent jsp. Thus the list jsp jsp always fetches from DB when we bring control to that. Clicking add on the list jsp leads to the adddetails jsp which submit data to DB. This is the most commonly used and I have seen this being used successfully in multiple applications 2. Create the 2 jsp as a wizard using struts session scope strategy. This strategy has certain complications and is generally disadvantageous. Thanks, Satish Kataria -Original Message- From: lixin chu [mailto:[EMAIL PROTECTED] Sent: Monday, August 16, 2004 4:59 AM To: [EMAIL PROTECTED] Subject: best practice: how to handle two related jsp pages, with one having an ArrayList, the other input details Hi, How should I handle this: I have 2 jsp, in a.JSP, I need to display an ArrayList. When users click 'Add', B.JSP is displayed which allows users to fill in the details of a new object. When users click 'Done', I need to return back to A.JSP, display the newly added object, and ArrayList should be updated as well. What do I need to do to support this ? thank you very much li xin __ Do you Yahoo!? New and Improved Yahoo! Mail - Send 10MB messages! http://promotions.yahoo.com/new_mail - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
