Comments on: Spring Web Flow Bean Scopes and JSF http://blog.springsource.com/2007/05/08/spring-web-flow-bean-scopes-and-jsf/ The voice of SpringSource Sun, 21 Mar 2010 14:08:54 -0500 http://wordpress.org/?v=2.8.5 hourly 1 By: Agim’s notebook » Blog Archive » Spring Webflow 2.0 auf dem Weg http://blog.springsource.com/2007/05/08/spring-web-flow-bean-scopes-and-jsf/comment-page-1/#comment-40640 Agim’s notebook » Blog Archive » Spring Webflow 2.0 auf dem Weg Sun, 19 Aug 2007 17:46:55 +0000 http://blog.interface21.com/main/2007/05/08/spring-web-flow-bean-scopes-and-jsf/#comment-40640 [...] - Spring Webflow Scopes Seit der Version 2.0 des Spring Frameworks (welches von Spring Webflow verwendet wird), besteht die Möglichkeit das Beans unterschiedliche Gültigkeitzeiträume besitzen (Scopes). Von Haus aus werden von Spring die Scopes Singleton, Session, Request sowie Prototyp mitgeleifert. Mit Spring Webflow 2.0 stehen zudem die Scopes Conversation sowie Flow zur Verfügung. Dadurch können einzelne Objekten aus den beiden Scopes direkt aus dem ApplicationContext ausgelesen werden. Ben Hale hat hierzu einen Blog Eintrag (in Englisch) erfasst. [...] [...] – Spring Webflow Scopes Seit der Version 2.0 des Spring Frameworks (welches von Spring Webflow verwendet wird), besteht die Möglichkeit das Beans unterschiedliche Gültigkeitzeiträume besitzen (Scopes). Von Haus aus werden von Spring die Scopes Singleton, Session, Request sowie Prototyp mitgeleifert. Mit Spring Webflow 2.0 stehen zudem die Scopes Conversation sowie Flow zur Verfügung. Dadurch können einzelne Objekten aus den beiden Scopes direkt aus dem ApplicationContext ausgelesen werden. Ben Hale hat hierzu einen Blog Eintrag (in Englisch) erfasst. [...]

]]> By: Vijay http://blog.springsource.com/2007/05/08/spring-web-flow-bean-scopes-and-jsf/comment-page-1/#comment-32721 Vijay Sat, 07 Jul 2007 00:50:11 +0000 http://blog.interface21.com/main/2007/05/08/spring-web-flow-bean-scopes-and-jsf/#comment-32721 Hi, I am trying to integrate SWF with JSF. The problem I am running into is trying to access the JSF managed beans inside the SWF webflow.xml. How do i access the JSF managed bean inside the Spring webflow.xml ? I did come across this patch but is that needed ? http://forum.springframework.org/showthread.php?t=37781 TIA, Vijay Hi,

I am trying to integrate SWF with JSF. The problem I am running into is trying to access the JSF managed beans inside the SWF webflow.xml. How do i access the JSF managed bean inside the Spring webflow.xml ?

I did come across this patch but is that needed ?
http://forum.springframework.org/showthread.php?t=37781

TIA,
Vijay

]]> By: Ben Hale http://blog.springsource.com/2007/05/08/spring-web-flow-bean-scopes-and-jsf/comment-page-1/#comment-24572 Ben Hale Fri, 25 May 2007 14:23:35 +0000 http://blog.interface21.com/main/2007/05/08/spring-web-flow-bean-scopes-and-jsf/#comment-24572 [quote comment="24568"]Hi... Can you tell me the difference between the request and flash scopes.I don't know when to use one or another for doing any task... thanksss....[/quote] Sure! I think the documentation spells it out nicely (http://static.springframework.org/spring-webflow/docs/current/reference/flow-execution.html#execution-scopes) but I'll give you some examples as well. Request scope is basically the same as the request scope for a servlet. Any data stored in request scope lives for a single request. Therefore, request scoped data will not be accessible if the user refreshes a page because the refresh is a separate request. Flash scope aims to solve that particular problem. Any data in flash scope lives until an 'event' is signaled to the flow. Therefore, if the user refreshes a page (potentially even multiple times) the data will be accessible across each of those requests. However, as soon as the user signals an event (a submit button for instance), the data becomes inaccessible. [quote comment="24568"]Hi…
Can you tell me the difference between the request and flash scopes.I don't know when to use one or another for doing any task…
thanksss….[/quote]

Sure! I think the documentation spells it out nicely (http://static.springframework.org/spring-webflow/docs/current/reference/flow-execution.html#execution-scopes) but I'll give you some examples as well.

Request scope is basically the same as the request scope for a servlet. Any data stored in request scope lives for a single request. Therefore, request scoped data will not be accessible if the user refreshes a page because the refresh is a separate request.

Flash scope aims to solve that particular problem. Any data in flash scope lives until an 'event' is signaled to the flow. Therefore, if the user refreshes a page (potentially even multiple times) the data will be accessible across each of those requests. However, as soon as the user signals an event (a submit button for instance), the data becomes inaccessible.

]]> By: Somebody http://blog.springsource.com/2007/05/08/spring-web-flow-bean-scopes-and-jsf/comment-page-1/#comment-24568 Somebody Fri, 25 May 2007 14:08:49 +0000 http://blog.interface21.com/main/2007/05/08/spring-web-flow-bean-scopes-and-jsf/#comment-24568 Hi... Can you tell me the difference between the request and flash scopes.I don't know when to use one or another for doing any task... thanksss.... Hi…
Can you tell me the difference between the request and flash scopes.I don't know when to use one or another for doing any task…
thanksss….

]]> By: Shashi http://blog.springsource.com/2007/05/08/spring-web-flow-bean-scopes-and-jsf/comment-page-1/#comment-23105 Shashi Wed, 16 May 2007 07:27:43 +0000 http://blog.interface21.com/main/2007/05/08/spring-web-flow-bean-scopes-and-jsf/#comment-23105 Hi Ben, I am not able to format the coding lines correct. Can you please have a look at my post at http://forum.springframework.org/showthread.php?t=38731 and http://forum.springframework.org/showthread.php?t=38781 I will appreciate your help in this regard. Regards, Shashi Hi Ben,

I am not able to format the coding lines correct. Can you please have a look at my post at http://forum.springframework.org/showthread.php?t=38731

and http://forum.springframework.org/showthread.php?t=38781

I will appreciate your help in this regard.

Regards,
Shashi

]]> By: Shashi http://blog.springsource.com/2007/05/08/spring-web-flow-bean-scopes-and-jsf/comment-page-1/#comment-23099 Shashi Wed, 16 May 2007 06:55:00 +0000 http://blog.interface21.com/main/2007/05/08/spring-web-flow-bean-scopes-and-jsf/#comment-23099 The code part was formatted hence submitting the post once more. Hi Ben, I am trying to utilize various scopes discussed in the article. Let me explain what all things I have done. I have defined a bean called login in the flash scope as "" I have created a jsp file where the bean is referred as " " When I submit this page, in the action bean I do not get the login bean in the Flash scope. It comes as null. However if I change the scope of the login bean to flow, I get the instance. Is there any thing I am doing wrong. Would appreciate your Help. Regards, Shashi The code part was formatted hence submitting the post once more.

Hi Ben,

I am trying to utilize various scopes discussed in the article.

Let me explain what all things I have done.

I have defined a bean called login in the flash scope as
""

I have created a jsp file where the bean is referred as

"
"

When I submit this page, in the action bean I do not get the login bean in the Flash scope. It comes as null. However if I change the scope of the login bean to flow, I get the instance. Is there any thing I am doing wrong. Would appreciate your Help.

Regards,
Shashi

]]> By: Shashi http://blog.springsource.com/2007/05/08/spring-web-flow-bean-scopes-and-jsf/comment-page-1/#comment-23096 Shashi Wed, 16 May 2007 06:43:58 +0000 http://blog.interface21.com/main/2007/05/08/spring-web-flow-bean-scopes-and-jsf/#comment-23096 Hi Ben, I am trying to utilize various scopes discussed in the article. Let me explain what all things I have done. I have defined a bean called login in the flash scope as I have created a jsp file where the bean is referred as When I submit this page, in the action bean I do not get the login bean in the Flash scope. It comes as null. However if I change the scope of the login bean to flow, I get the instance. Is there any thing I am doing wrong. Would appreciate your Help. Regards, Shashi Hi Ben,

I am trying to utilize various scopes discussed in the article.

Let me explain what all things I have done.

I have defined a bean called login in the flash scope as

I have created a jsp file where the bean is referred as

When I submit this page, in the action bean I do not get the login bean in the Flash scope. It comes as null. However if I change the scope of the login bean to flow, I get the instance. Is there any thing I am doing wrong. Would appreciate your Help.

Regards,
Shashi

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