problem with jbpm-3.2.Beta2

[fuligj]

I have downloaded the jbpm-3.2.Beta2 and when I try to start the sample process in web-console, i receive an error message: "Can't overwrite cause". I use JDK 6.
What can be wrong?
Thanks.

[kukeltje]

- appserver?
- stacktrace?
- ...

[fuligj]

- Stack Trace

java.lang.IllegalStateException: Can't overwrite cause
 at java.lang.Throwable.initCause(Throwable.java:320)
 at com.ctc.wstx.compat.Jdk14Impl.setInitCause(Jdk14Impl.java:59)
 at com.ctc.wstx.exc.WstxException.<init>(WstxException.java:46)
 at com.ctc.wstx.exc.WstxIOException.<init>(WstxIOException.java:16)
 at com.ctc.wstx.sr.StreamScanner.throwFromIOE(StreamScanner.java:522)
 at com.ctc.wstx.sr.WstxStreamReader.next(WstxStreamReader.java:978)
 at org.jbpm.webapp.tag.jbpm.ui.XmlPrinter.encodeBegin(XmlPrinter.java:113)
 at org.jbpm.webapp.tag.jbpm.ui.ComponentBase.doEncode(ComponentBase.java:31)
 at org.jbpm.webapp.tag.jbpm.ui.ComponentBase.doEncode(ComponentBase.java:58)
 at org.jbpm.webapp.tag.jbpm.ui.Tab.encodeChildren(Tab.java:112)
 at javax.faces.component.UIComponent.encodeAll(UIComponent.java:884)
 at javax.faces.component.UIComponent.encodeAll(UIComponent.java:890)
 at javax.faces.component.UIComponent.encodeAll(UIComponent.java:890)
 at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:578)
 at org.jbpm.webapp.application.JbpmViewHandler.renderView(JbpmViewHandler.java:58)
 at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106)
 at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:248)
 at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144)
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jbpm.webapp.filter.LogFilter.doFilter(LogFilter.java:59)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
 at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
 at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:524)
 at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
 at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
 at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
 at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
 at java.lang.Thread.run(Thread.java:619)

[kukeltje]

since a jdk14 compat class is used, I would not be surprised that can not be run on jdk6... (jbpm has not been tested on jdk6)

[fuligj]

So, i have tried with jdk 5.
U:\>java -version
java version "1.5.0_08"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_08-b03)
Java HotSpot(TM) Client VM (build 1.5.0_08-b03, mixed mode, sharing)
The error message is the following:

Stream error while reading XML: Connection timed out: connect
+- Stack Trace

javax.faces.FacesException: Stream error while reading XML: Connection timed out: connect
 at com.ctc.wstx.sr.StreamScanner.throwFromIOE(StreamScanner.java:522)
 at com.ctc.wstx.sr.WstxStreamReader.next(WstxStreamReader.java:978)
 at org.jbpm.webapp.tag.jbpm.ui.XmlPrinter.encodeBegin(XmlPrinter.java:113)
 at org.jbpm.webapp.tag.jbpm.ui.ComponentBase.doEncode(ComponentBase.java:31)
 at org.jbpm.webapp.tag.jbpm.ui.ComponentBase.doEncode(ComponentBase.java:58)
 at org.jbpm.webapp.tag.jbpm.ui.Tab.encodeChildren(Tab.java:112)
 at javax.faces.component.UIComponent.encodeAll(UIComponent.java:884)
 at javax.faces.component.UIComponent.encodeAll(UIComponent.java:890)
 at javax.faces.component.UIComponent.encodeAll(UIComponent.java:890)
 at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:578)
 at org.jbpm.webapp.application.JbpmViewHandler.renderView(JbpmViewHandler.java:58)
 at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106)
 at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:248)
 at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144)
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jbpm.webapp.filter.LogFilter.doFilter(LogFilter.java:59)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
 at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
 at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:524)
 at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
 at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
 at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
 at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
 at java.lang.Thread.run(Unknown Source)

[kukeltje]

could it be the server is trying to retrieve an xsd from an external location and it is not allowed to do that?

[fuligj]

I have tried in jBPM 3.2.GA, and i have received the same exception. The process goes to process instances, but when i try to view the process instace task, i get the error message. In Beta1 works everything fine, the problems cames first with Beta2.
How could I check, that you said?:

could it be the server is trying to retrieve an xsd from an external location and it is not allowed to do that?

It's freaky, that I get an error message, when i use an original jbpm pack, what i didn't modified and many of my friends use the same pack without errors.
Thank You!
Regards.

[fuligj]

Any idea?
Thanks!

[kukeltje]

by using a sniffer?

[fuligj]

What kind of sniffer do you think? Can you offer me one?
Thank You!

[fuligj]

I tried it under Linux (openSuse10.2) and the exception was the same.

[kukeltje]

ethereal is a good 'sniffer'

[fuligj]

I think, i found the problem. In the websale example the first task's source is form.create.xhtml. In this file the second line is

http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd

and when your computer has no internet connection, this is unreachable.

Can anybody check this?
Any idea to solve this problem?
Thanks!

[alepuppo]

Actually, if your internet connection is active, maybe you need to configure the right proxy settings to startup your Application Server.

In this page, there's a list of options showing how to setup the proxy settings for some Server Applications like JBoss, Tomcat, Orion and WebLogic: http://confluence.atlassian.com/display/DOC/Configure+Web+Proxy+Support+for+Confluence

Particularly, to run the sample application under JBoss application server bundled with jBPM-suite 3.2, I did the following:

-Edited the file "jbpm-jpdl-3.2.GA\server\bin\run.bat"
-Searched for JAVA_OPTS. Changed the line
"set JAVA_OPTS=%JAVA_OPTS% -Xms128m -Xmx512m -Dsun.rmi.dgc.client.gcInterval=3600000 -Dsun.rmi.dgc.server.gcInterval=3600000"

to

"set JAVA_OPTS=%JAVA_OPTS% -Dhttp.proxyHost=192.168.10.254 -Dhttp.proxyPort=3128 -Xms128m -Xmx512m -Dsun.rmi.dgc.client.gcInterval=3600000 -Dsun.rmi.dgc.server.gcInterval=3600000"

Where 192.168.10.254 is my proxy server and 3128 is the port for connection.

Hope this works for you as worked for me!!

Best regards,

Alexandre

[margotmedia]

java.lang.IllegalStateException: Can't overwrite cause

It is an error due to a bug with wstx library, I've changed it for an older version than wstx-lgpl-3.2.6.jar (it solves the problem) and it worked fine!