March 2007 - jboss-user - Jboss List Archives

by javajoe220

Hello, I am very interested in using the @Asynchronous and Event.raiseAsynchronousEvent functionality. However, its lack of access to the Conversation and Session scope is difficult to work around. The documentation states the following: anonymous wrote : We usually use an asynchronous call when we want to return an immediate response to the client, and let some expensive work be processed in the background. This pattern works very well in applications which use AJAX, where the client can automatically poll the server for the result of the work. | This sounds great and is exactly what we want to do! A brief summary is as follows: 1) A user does a search. 2) When the user selects a search results it kicks off a conversation and several areas are initialized in respect to the selected search item via Event / Observer. Each Observer is in a stateful session bean with a conv. scope. 3) We then access the data we need from each bean. I would really like to make these initialization routines async without doing some context gymnastics to get the results in the conversation scope. The doc I quoted suggests "polling" but unless we put the results in the business or application scope I don't see how it is possible. Please let me know if I am missing something here or if you may have any suggestion? Thank you. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4030051#4030051 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4030051

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[JBoss Seam] - Re: Seam jBPM: use annotation or pages.xml to get next task?

by bsmithjj

"gavin.king(a)jboss.com" wrote : Of course, if you created it yourself via some other mechanism, *you* will have to associate it will the conversation using BusinessProcess.instance().setProcessId( processInstance.getId() ). | | Seam isn't magic. Seam only knows about processes it creates or retrieves. If you get it yourself, by going to jBPM APIs directly, then it is up to you to do the job of associating it with the conversation. I realize what you're saying above about Seam - I'm attempting to use the EL as you showed earlier to have an ActionHandler invoke a Seam component instead of having to implement an ActionHandler which you claim I should never have to do ;-). Anyway, now we're coming to why I suggested earlier the possibility of creating a Seam-jBPM interceptor that fires around the execute(...) method in an ActionHandler, DecisionHandler, etc... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4030050#4030050 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4030050

19 years, 1 month

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[JBoss Seam] - Re: Seam Tools, Project Structures, and IDEs

by stu2

"Delphi's Ghost" wrote : Our other concern is with debugging the application within the IDE which is difficult/impossible? without using an IDE generated project as opposed to an ant based project. | Not sure what you mean here. Eclipse debugs a seam-gen produced project just fine, "right out of the box." I also prefer a more WTP-like structure, but getting everything to work in that structure didn't seem worth it when seam-gen worked right away. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4030049#4030049 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4030049

19 years, 1 month

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[JBoss Seam] - Re: Seam jBPM: use annotation or pages.xml to get next task?

by bsmithjj

In our application, a user may create a 1-N entities we call AccessRequests. In the SFSB method which is invoked by the user on submit, we create a loop to create each AccessRequest and create a ProcessInstance with that AccessRequest's id as a process variable. In this particular use case, we signal up to the 'provisioning' state previously described. Here is the code that creates the N ProcessInstances (inside the braces of a for loop): | // Load the JBPM context | JbpmConfiguration jbpmConfiguration = JbpmConfiguration.getInstance(); | JbpmContext jbpmContext = jbpmConfiguration.createJbpmContext(); | // Create new process, associate with this access request and save | ProcessInstance process = jbpmContext.newProcessInstance("NewAccessRequest"); | process.getContextInstance().setVariable("accessRequestId", accessRequest.getId()); | Contexts.getEventContext().set( | "accessRequest", | accessRequest | ); | Token token = process.getRootToken(); | token.signal(); // move to <task-node name="User Manager Approve-Reject Request"> | and flushed)."); | | | Collection<TaskInstance> tasks = (Collection<TaskInstance>) process.getTaskMgmtInstance().getTaskInstances(); | | // Thd jBPM API sucks (3.1.4) - this is the only way I can find of ending the current task | // along the 'approve' transition | for (TaskInstance task : tasks) { | if ("Approve/Reject".equals(task.getName())) { | task.end("approve"); | break; | } | } | | jbpmContext.close(); | | thanks View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4030046#4030046 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4030046

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[JBoss Seam] - Re: Seam jBPM: use annotation or pages.xml to get next task?

by gavin.king＠jboss.com

Of course, if you created it yourself via some other mechanism, *you* will have to associate it will the conversation using BusinessProcess.instance().setProcessId( processInstance.getId() ). Seam isn't magic. Seam only knows about processes it creates or retrieves. If you get it yourself, by going to jBPM APIs directly, then it is up to you to do the job of associating it with the conversation. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4030045#4030045 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4030045

19 years, 1 month

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[JBoss Seam] - Re: Seam jBPM: use annotation or pages.xml to get next task?

by gavin.king＠jboss.com

So how is it created. If it was created using @CreateProcess then it will be associated with the current conversation, and it will be available to the action handler. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4030044#4030044 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4030044

19 years, 1 month

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[JBoss Seam] - Re: Seam jBPM: use annotation or pages.xml to get next task?

by bsmithjj

Another EJB (yes a seam component) has created the process instance - then, based on certain business conditions, the process gets signaled through the tasks until we arrive at this particular state (node). On entry into the state, this ActionHandler fires (I posted the XML for this state node a few postings back). Thanks View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4030042#4030042 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4030042

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[JBoss Seam] - Re: EL evaluated in comment

by svadu

use ui:remove View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4030041#4030041 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4030041

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[JBoss Seam] - Re: EL evaluated in comment

by gavin.king＠jboss.com

This is a facelets question that has been discussed before. It is certainly not a bug. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4030040#4030040 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4030040

19 years, 1 month

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[JBoss Seam] - Re: Seam jBPM: use annotation or pages.xml to get next task?

by gavin.king＠jboss.com

What exactly is driving jBPM here? What causes the event to fire? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4030039#4030039 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4030039

19 years, 1 month

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jboss-user March 2007