September 2007 - jboss-user - Jboss List Archives

[JBoss jBPM] - Sub process exception handling, strange behaviour

by norwaytoheaven

Hi, It seems that exceptions occuring in a subprocess can be handled by a wrong exception handler: According to the source code (ProcessState.java), if an exception has occured during sub process execution, no exception handler is called at the process state level. If the node before the process state is of type Node, the exception will be catched in the execute method, and then possibly call this node's exception handler. Here's a unit test to illustrate this: package test; | | import org.jbpm.graph.def.ActionHandler; | import org.jbpm.graph.def.ProcessDefinition; | import org.jbpm.graph.exe.ExecutionContext; | import org.jbpm.graph.exe.ProcessInstance; | | import junit.framework.TestCase; | | public class Test extends TestCase { | | public static String actionHandler = null; | | public void test() throws Exception { | ProcessDefinition def = ProcessDefinition.parseXmlResource("main/processdefinition.xml"); | ProcessInstance p = def.createProcessInstance(); | | p.signal(); | | // The exception thrown in the subprocess has been handled by the Node1 exception handler. | assertEquals("Node1", actionHandler); | | } | | | public static class ProcessStateExceptionHandler implements ActionHandler { | | public void execute(ExecutionContext executionContext) throws Exception { | actionHandler = "ProcessState"; | } | } | | public static class Node1ExceptionHandler implements ActionHandler { | | public void execute(ExecutionContext executionContext) throws Exception { | actionHandler = "Node1"; | } | } | | public static class ProcessDefinitionExceptionHandler implements ActionHandler { | | public void execute(ExecutionContext executionContext) throws Exception { | actionHandler = "ProcessDefinition"; | } | } | | public static class Node1ActionHandler implements ActionHandler { | public void execute(ExecutionContext executionContext) throws Exception { | executionContext.leaveNode(); | } | } | | public static class Node2ActionHandler implements ActionHandler { | public void execute(ExecutionContext executionContext) throws Exception { | throw new Exception(); | } | } | } | Main process : <?xml version="1.0" encoding="UTF-8"?> | | <process-definition | xmlns="urn:jbpm.org:jpdl-3.2" name="main"> | <start-state name="start"> | <transition name="" to="node1"></transition> | </start-state> | <node name="node1"> | <action class="test.Test$Node1ActionHandler" /> | <transition name="" to="process1"></transition> | <exception-handler> | <action class="test.Test$Node1ExceptionHandler" /> | </exception-handler> | </node> | <process-state name="process1"> | <sub-process name="sub"/> | <transition name="" to="end1"></transition> | <exception-handler> | <action class="test.Test$ProcessStateExceptionHandler" /> | </exception-handler> | </process-state> | <end-state name="end1"></end-state> | <exception-handler> | <action class="test.Test$ProcessDefinitionExceptionHandler" /> | </exception-handler> | </process-definition> sub process : | <?xml version="1.0" encoding="UTF-8"?> | | <process-definition | xmlns="urn:jbpm.org:jpdl-3.2" name="sub"> | <start-state name="start"> | <transition name="" to="node2"></transition> | </start-state> | <end-state name="end1"></end-state> | <node name="node2"> | <action class="test.Test$Node2ActionHandler"/> | <transition name="" to="end1"></transition> | </node> | </process-definition> | Shouldn't there be a try { } catch (Exception) { raiseException(exception, executionContext);} in the excecute() method of the process state, so that the exception handler mechanism works with that kind of node? If not, how are we supposed to deal with exceptions occuring in a sub process? Regards, Erwan View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4088800#4088800 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4088800

18 years, 7 months

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[JBoss Seam] - Re: Does the JPA/tomcat example require Embedded Jboss?

by thejavafreak

"ASavitsky" wrote : "thejavafreak" wrote : It's not ambiguous. | | | | Point 1 means that Seam can run without EJB3 container by just using Plain Pojo + Hibernate and not JPA + EJB3 | | Actually, it's Plain POJO + JPA, as JPA can be used in J2SE :) Well there's nothing wrong with saying JPA + Hibernate right? Seam also provides plain hibernate too ;) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4088799#4088799 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4088799

18 years, 7 months

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[JBoss Seam] - Seam + stored procs: what's the recommendation?

by asookazian

Just wondering what the official Seam recommendation/stance is regarding using sprocs with Seam web apps? Other than being tied down to a particular DB vendor due to differences in the SQL syntax, we are aware of this problem. I've read Gavin King and Martin Fowler stating a good reason to use sprocs is for maximum performance. Assume that this is not an issue for us. I've done this with a simple use case recently and found resultsets cumbersome to use (dataTables and looping, etc) esp. with dynamic columns. Also, you can't use the Hibernation Validator annotations on the getter methods of the entity bean class (and in JSF using s:validate or s:validateAll tags). Any other Seam/JSF/EJB3 advantages we'd lose out on? Yes, I know about caching and lazy-loading. The three Seam books I have did not mention sprocs or resultsets at all, as I recall. So is it basically recommended to convert legacy sprocs to entity beans or POJOs? Not to create new sprocs at all for Seam app use? And obviously, thanks to a reply on here, we learned it's best to use DataSource (connection-pooled) rather than DriverManager to get DB connections to minimize overhead. thx. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4088798#4088798 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4088798

18 years, 7 months

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[JBoss Seam] - Re: Security Auto-Login Question

by craigbarker2

Hi, I will get around to posting this up on the WIKI but the 'day job' is currently taking up more than it's fair share of time. When it all calms down i'll get it done. In answer to your query I use: @In Context sessionContext; | | ... | | ((NtlmPasswordAuthentication) sessionContext.get("NtlmHttpAuth")).getUsername() | | This allows me to extract the current session user's username, which I then pass off to the real authentication/authorisation code. Hope this helps. Craig View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4088789#4088789 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4088789

18 years, 7 months

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[JBoss Seam] - Re: Directory Path on Jboss server

by hager

hello, i will express my self differently, i want to have the current directory's path of my project on jboss server. thank you View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4088787#4088787 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4088787

18 years, 7 months

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[JBoss Seam] - Re: Security Auto-Login Question

by axismundi

We need also NTLM authentication and the configuration is quite apparent. However to me is not clear how to obtain the HTTP-request-headers from my authenticator.autenthicate() EJB3 bean-method in order to call request.getRemoteUser(). Seam provides Annotation for @RequestParameter, but I don't see anything like @HttpRequest to inject to javax.servlet.HttpServletRequest any suggestion is appeciated. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4088785#4088785 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4088785

18 years, 7 months

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[JBoss Seam] - Re: seam don't set the invalid after an ajax request

by pete.muir＠jboss.org

#{invalid} is made available by s:decorate - reRender the s:decorate, not its contents. Follow the examples! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4088784#4088784 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4088784

18 years, 7 months

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[JBoss Seam] - Re: multiple calls to same method from <s:div rendered...>

by pete.muir＠jboss.org

Use lazy initialization - @Factory does this for you. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4088783#4088783 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4088783

18 years, 7 months

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[JBoss Seam] - Re: Seam 2 CR1 upgrade issues

by pete.muir＠jboss.org

The XML parsing in JSF 1.2 RI is stricter than in MyFaces. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4088782#4088782 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4088782

18 years, 7 months

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[Performance Tuning] - Re: Monitoring and managing clustered servers

by BruceSpringfield

How are you collecting individual counters and statistics? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4088775#4088775 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4088775

18 years, 7 months

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jboss-user September 2007