Re: Struts & Workflow
On 10/18/06, Don Brown <[EMAIL PROTECTED]> wrote: Struts 2 doesn't have a specific workflow engine built in, per se, but you do have several options: 1. Spring's Web Flow 2. Continuations And then there is Commons SCXML [1], which is a generic state machine / workflow engine that can tie into many environments (though there is nothing ATM in the Struts1/2 space, AFAIK). One of the benefits is leveraging a W3C standard (in the making, so it has a decent chance of paying off in the long run from various standpoints -- tooling, runtimes, multiple impls to choose from). Its possible to pick the expression language for expressions within the workflow definition (JSP 2.0 EL, Commons JEXL are supported, there is concrete evidence of ability to use pnuts and ECMA, and anecdotal evidence for using XPath via the tiger APIs). Its also possible to add domain-specific XML vocabularies (namespaces) that allows the Commons SCXML engine to carry out domain-specific actions. One of the working examples is an impl for Shale dialogs [2] (which were mentioned below). -Rahul [1] http://jakarta.apache.org/commons/scxml/ [2] http://shale.apache.org/shale-dialog/ For point 2, Struts 2 has built in support for RIFE's continuations library. A good example can be found in the showcase. It basically lets you code a workflow in a single method, adding 'pause' calls for when a page should be sent back to the user. Use with care, however, as this is still in an experimental stage. Another framework to look at is Apache Shale - http://shale.apache.org - which builds on JSF and adds a "Dialog" scope framework for this sort of thing. Don On 10/18/06, Jim Reynolds <[EMAIL PROTECTED]> wrote: > Hello Roger, > > I know for sure that Spring has a wizard-like approach for > multi-screen data entry. I believe it is called Spring Web Flow. Now, > I am getting a feeling that Struts2 supports portions of Spring > (Still trying to figure this out) and also appears to include WebWork. > So to the point of your question if someone on this list knows if > Web Flow is part of Struts2, then this would be a valid solution if > you do not want to use Spring. I know there is no work-flow in Struts > 1.x unless you roll your own. > > HTH > > > > On 10/18/06, Roger Varley <[EMAIL PROTECTED]> wrote: > > Hi > > > > I'm looking at the possibilty of using Struts for my next project, > > which is to replace an internal intranet application that uses an > > applet with a servlet based framework. Among the many "challenges" is > > the need, because the applet is basically a multi-screen data entry > > program, to have absolute control over the sequence flow of the > > application - ignore browser back/forward, bookmarking etc and I > > probably need some way of telling if a user navigates away/closes the > > browser mid-session. > > > > Can I do this with Struts (and if so, how) or do I need a more generic > > "worklfow" type of framework? > > > > Sorry if this all sounds a bit vague, but I'm just at the start of > > trying to sort all this out. > > > > Regards > > - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Struts & Workflow
From: Jim Reynolds [mailto:[EMAIL PROTECTED] > If Struts2 is WebWork, is Spring Configured anywhere for its IOC? Spring is its IoC container... Have you looked at the documentation pages at all? It talks about all this stuff like validation, IoC, Spring Actions (if you want to, but don't need to), auto-wiring, tag libraries, etc. or points to the WW wiki and the docs there. The starting links I used the most often were: http://cwiki.apache.org/S2WIKI/home.html http://cwiki.apache.org/WW/home.html The most useful links I used to get a complete application (except for a Hibernate transaction interceptor) going were: http://cwiki.apache.org/WW/tutorials.html http://cwiki.apache.org/WW/guides.html http://cwiki.apache.org/WW/faqs.html http://cwiki.apache.org/WW/hello-world.html http://cwiki.apache.org/WW/ready-set-go.html In particular the guides were most enlightening. Dave - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Struts & Workflow
Struts 2 has built-in Spring support. This means if you choose the spring object factory (by changing struts.properties), your actions will be autowired by name with Spring. In addition, you can have your Action class itself be created and wired by Spring, simply by using the spring id where you would normally put the full class name in struts.xml. For more information, see http://cwiki.apache.org/confluence/display/WW/Spring Don On 10/18/06, Jim Reynolds <[EMAIL PROTECTED]> wrote: If Struts2 is WebWork, is Spring Configured anywhere for its IOC? When working with it a while back, I really liked the fact that you could create the datasource, and inject the datasource into DAOs. Or does WebWork have an IOC that mimicks Spring? Thanks, On 10/18/06, Dave Newton <[EMAIL PROTECTED]> wrote: > From: Jim Reynolds [mailto:[EMAIL PROTECTED] > > [...] also appears to include WebWork. > > Struts2 *is* WebWork. > > Dave > > - > 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] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Struts & Workflow
Struts 2 doesn't have a specific workflow engine built in, per se, but you do have several options: 1. Spring's Web Flow 2. Continuations For point 2, Struts 2 has built in support for RIFE's continuations library. A good example can be found in the showcase. It basically lets you code a workflow in a single method, adding 'pause' calls for when a page should be sent back to the user. Use with care, however, as this is still in an experimental stage. Another framework to look at is Apache Shale - http://shale.apache.org - which builds on JSF and adds a "Dialog" scope framework for this sort of thing. Don On 10/18/06, Jim Reynolds <[EMAIL PROTECTED]> wrote: Hello Roger, I know for sure that Spring has a wizard-like approach for multi-screen data entry. I believe it is called Spring Web Flow. Now, I am getting a feeling that Struts2 supports portions of Spring (Still trying to figure this out) and also appears to include WebWork. So to the point of your question if someone on this list knows if Web Flow is part of Struts2, then this would be a valid solution if you do not want to use Spring. I know there is no work-flow in Struts 1.x unless you roll your own. HTH On 10/18/06, Roger Varley <[EMAIL PROTECTED]> wrote: > Hi > > I'm looking at the possibilty of using Struts for my next project, > which is to replace an internal intranet application that uses an > applet with a servlet based framework. Among the many "challenges" is > the need, because the applet is basically a multi-screen data entry > program, to have absolute control over the sequence flow of the > application - ignore browser back/forward, bookmarking etc and I > probably need some way of telling if a user navigates away/closes the > browser mid-session. > > Can I do this with Struts (and if so, how) or do I need a more generic > "worklfow" type of framework? > > Sorry if this all sounds a bit vague, but I'm just at the start of > trying to sort all this out. > > Regards > > - > 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] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Struts & Workflow
If Struts2 is WebWork, is Spring Configured anywhere for its IOC? When working with it a while back, I really liked the fact that you could create the datasource, and inject the datasource into DAOs. Or does WebWork have an IOC that mimicks Spring? Thanks, On 10/18/06, Dave Newton <[EMAIL PROTECTED]> wrote: From: Jim Reynolds [mailto:[EMAIL PROTECTED] > [...] also appears to include WebWork. Struts2 *is* WebWork. Dave - 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: Struts & Workflow
From: Jim Reynolds [mailto:[EMAIL PROTECTED] > [...] also appears to include WebWork. Struts2 *is* WebWork. Dave - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Struts & Workflow
Hello Roger, I know for sure that Spring has a wizard-like approach for multi-screen data entry. I believe it is called Spring Web Flow. Now, I am getting a feeling that Struts2 supports portions of Spring (Still trying to figure this out) and also appears to include WebWork. So to the point of your question if someone on this list knows if Web Flow is part of Struts2, then this would be a valid solution if you do not want to use Spring. I know there is no work-flow in Struts 1.x unless you roll your own. HTH On 10/18/06, Roger Varley <[EMAIL PROTECTED]> wrote: Hi I'm looking at the possibilty of using Struts for my next project, which is to replace an internal intranet application that uses an applet with a servlet based framework. Among the many "challenges" is the need, because the applet is basically a multi-screen data entry program, to have absolute control over the sequence flow of the application - ignore browser back/forward, bookmarking etc and I probably need some way of telling if a user navigates away/closes the browser mid-session. Can I do this with Struts (and if so, how) or do I need a more generic "worklfow" type of framework? Sorry if this all sounds a bit vague, but I'm just at the start of trying to sort all this out. Regards - 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: [struts workflow extension] Workflow Violation Help
Hi, This is the reason for providing the secondary workflow mechanism... As a single workflow allows you to define a single workflow violation path , and hence single point of forward, you can start your own subworkflows(secondary workflows) so that the same can be used like bookmarks/savepoints in a workflow.And this is the exact situation you are looking for. Install and have a look at the test application .It will help you to understand how to define and use secondary workflows . I am working on rearchitecting the workflow so that more flexibility is possible to define cases like you said... Hope I get some time to finish it ASAP. Let me know if you need any more help.. Regards, Shirish. -Original Message- From: Wood, Derek (DIS Contractor) [mailto:[EMAIL PROTECTED] Sent: Wednesday, May 19, 2004 6:20 PM To: '[EMAIL PROTECTED]' Subject: [struts workflow extension] Workflow Violation Help I have everything working using the Struts Workflow extension except that I am having problems with the workflow violation mechanism. I have a wizard consisting of 6 pages. The workflow through the entire 6 pages is assigned a single primary workflow value. So, I made one violation mapping to handle violations. What I want to happen is when the workflow is violated, I want the user to be sent back to the wizard page they were currently on (ie. page 4) and have a message on that page saying the violation. I can't seem to figure out how to get the user back to the page they were on ... given that I have only one workflow/violation defined. Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: struts workflow extension: help on workflow violation handling
Hi, There are certain things I wld want to point out: Lets assume you have page1 ,page2 and page3 as part of wizard. Page1 has a next button, page2 has next & back and page3 has back & submit button. I would create a formbean which contains attributes for all the 3 pages and define the formbean to be session scope. Also I would create one action class and write methods for all the actions triggered from wizard screens Code wld be like this: Struts-config.xml Assuming the actions for next and back on page2 are named page2next and page2back respectively similarly the action names for the rest of the pages as well The action class WizardAction wld have methods page1next,page2next,page3submit,page2back,page3back Hope this helps Thanks, Satish -Original Message- From: Derek [mailto:[EMAIL PROTECTED] Sent: Monday, April 12, 2004 2:14 AM To: [EMAIL PROTECTED] Subject: struts workflow extension: help on workflow violation handling I need some guidance and/or an example of how to achieve this... I have a multi-page wizard that uses a form bean (in the session) per page. "Next" and "Back" buttons submit to the same Action which is necessary to save all data entered into the form beans. On a workflow violation, I want the user to remain on the same wizard page that they were on and just display a message about the violation. It seems that when any violation occurs, no matter which page the user is on, the violation "handler" is called, the data in the session is removed and all workflows and states are removed. When running the demo application, it seems that the behavior is what I want but I can't seem to duplicate it in my application. Any help would be greatly appreciated. derek - 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]
