[JBoss OSGi Development] - OSGi classloader system
by thomas.diesler＠jboss.com
Folks,
I'd like to better understand how the classloader system works. Could you please talk me through the code below and explain what is being done here.
Eventually, I'd like to be able to setup a Framework Classloader with the configured packages in 'org.osgi.framework.system.packages' and 'org.osgi.framework.system.packages.extra'
| /**
| * Create a new OSGiClassLoaderSystem.
| * @param bundleManager the bundleManager
| * @throws IllegalArgumentException for a null bundle manager
| */
| public OSGiClassLoaderSystem(OSGiBundleManager bundleManager)
| {
| if (bundleManager == null)
| throw new IllegalArgumentException("Null bundle manager");
|
| ClassLoaderDomain domain = getDefaultDomain();
|
| // Initialize the configured system packages
| String sysPackageString = getSystemPackagesAsString(bundleManager);
| PatternClassFilter filter = PackageClassFilter.createPackageClassFilterFromString(sysPackageString);
| filter.setIncludeJava(true);
|
| domain.setParentPolicy(new ParentPolicy(filter, ClassFilter.NOTHING));
| AbstractJDKChecker.getExcluded().add(AbstractBundleState.class);
| AbstractJDKChecker.getExcluded().add(OSGiBundleState.class);
| }
|
| @Override
| protected ClassLoaderDomain createDomain(String name)
| {
| return new ClassLoaderDomain(name);
| }
|
| protected BaseClassLoader createClassLoader(ClassLoaderPolicy policy)
| {
| return new OSGiBundleClassLoader(policy);
| }
|
when done, I could probably remove this hack
| // [TODO] Should system packages be added as capabilities?
| boolean isSystemPackage = syspackPlugin.isSystemPackage(packageName);
| if (isSystemPackage == false)
| {
| OSGiPackageRequirement requirement = OSGiPackageRequirement.create(packageAttribute);
| requirements.addRequirement(requirement);
| }
|
View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4251995#4251995
Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4251995
15 years, 4 months
[jBPM Development] - couldn't get task instances list for actor pooledTaskInstanc
by andrzejurban
Hello,
I have a problem regarding use of a pooledTaskInstanceList on my agenda. I'm using jBPM 3.2.2.GA and JBoss 4.2.2.GA server.
I create a new process instance using an annotated method:
@End
@CreateProcess(definition = "KNFExport", processKey = "#{exportId}")
public String saveExport() {
Then I access my agenda :
<!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
xmlns:s="http://jboss.com/products/seam/taglib"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a="http://richfaces.org/a4j" template="/layout/template.xhtml"
xmlns:rich="http://richfaces.org/rich">
<ui:define name="titlebar">#{messages['agenda.list']}</ui:define>
<ui:define name="body">
<rich:panel>
<f:facet name="header">#{messages['agenda.ownTasks']}</f:facet>
<h:form id="list">
<h:outputText
value="#{messages['agenda.noOwnTasks']}"
rendered="#{empty taskInstanceList}" /> <h:dataTable
value="#{taskInstanceList}" var="task"
rendered="#{not empty taskInstanceList}">
<h:column>
<f:facet name="header">
<h:outputText value="#{messages['agenda.desc']}" />
</f:facet>
<h:inputText value="#{task.description}" readonly="true"/>
</h:column>
<h:column>
<f:facet name="header">
<h:outputText value="#{messages['agenda.name']}" />
</f:facet>
<h:inputText value="#{task.name}" readonly="true"/>
</h:column>
<h:column>
<f:facet name="header">
<h:outputText value="#{messages['id']}" />
</f:facet>
<h:inputText value="#{task.id}" />
</h:column>
<h:column>
<f:facet name="header">
<h:outputText value="#{messages['agenda.created']}" />
</f:facet>
<h:inputText
value="#{task.taskMgmtInstance.processInstance.start}">
<f:convertDateTime type="date" />
</h:inputText>
</h:column>
</h:dataTable>
</h:form>
</rich:panel>
<rich:panel>
<f:facet name="header">#{messages['agenda.groupTasks']}</f:facet>
<h:form>
<h:outputText
value="#{messages['agenda.noGroupTasks']}"
rendered="#{empty pooledTaskInstanceList}" /><h:dataTable
value="#{pooledTaskInstanceList}" var="task"
rendered="#{not empty pooledTaskInstanceList}">
<h:column>
<f:facet name="header">
<h:outputText value="#{messages['agenda.desc']}" />
</f:facet>
<h:inputText value="#{task.description}" readonly="true"/>
</h:column>
<h:column>
<f:facet name="header">
<h:outputText value="#{messages['agenda.name']}" />
</f:facet>
<h:inputText value="#{task.name}" readonly="true"/>
</h:column>
<h:column>
<f:facet name="header">
<h:outputText value="#{messages['id']}" />
</f:facet>
<h:inputText value="#{task.id}" readonly="true"/>
</h:column>
<h:column>
<f:facet name="header">
<h:outputText value="#{messages['agenda.created']}" />
</f:facet>
<h:outputText
value="#{task.taskMgmtInstance.processInstance.start}">
<f:convertDateTime type="date" readonly="true"/>
</h:outputText>
</h:column>
<h:column>
<f:facet name="header">
</f:facet>
<s:button action="#{pooledTask.assignToCurrentActor}"
taskInstance="#{task}" value="#{messages['agenda.assignToMe']}">
<a:support event="onclick" reRender="taskList" />
</s:button>
</h:column>
</h:dataTable>
</h:form>
</rich:panel>
</ui:define>
</ui:composition>
On my agenda I can see a newly created task on a group task list.
When I use the 'assign to me' button,
instead of a rendered page I get an error:
"couldn't get task instances list for actor 'admin'"
The stack trace:
org.jbpm.JbpmException: couldn't get task instances list for actor 'admin'
at org.jbpm.db.TaskMgmtSession.findTaskInstances(TaskMgmtSession.java:67)
at org.jbpm.JbpmContext.getTaskList(JbpmContext.java:191)
at org.jboss.seam.bpm.TaskInstanceList.getTaskInstanceList(TaskInstanceList.java:40)
at org.jboss.seam.bpm.TaskInstanceList.getTaskInstanceList(TaskInstanceList.java:33)
at sun.reflect.GeneratedMethodAccessor579.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.jboss.seam.util.Reflections.invoke(Reflections.java:22)
at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:31)
at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:56)
at org.jboss.seam.transaction.RollbackInterceptor.aroundInvoke(RollbackInterceptor.java:28)
at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
at org.jboss.seam.bpm.BusinessProcessInterceptor.aroundInvoke(BusinessProcessInterceptor.java:51)
at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
at org.jboss.seam.transaction.TransactionInterceptor$1.work(TransactionInterceptor.java:95)
at org.jboss.seam.util.Work.workInTransaction(Work.java:47)
at org.jboss.seam.transaction.TransactionInterceptor.aroundInvoke(TransactionInterceptor.java:89)
at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
at org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:44)
at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:107)
at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:185)
at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:103)
at org.jboss.seam.bpm.TaskInstanceList_$$_javassist_7.getTaskInstanceList(TaskInstanceList_$$_javassist_7.java)
at sun.reflect.GeneratedMethodAccessor578.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.jboss.seam.util.Reflections.invoke(Reflections.java:22)
at org.jboss.seam.util.Reflections.invokeAndWrap(Reflections.java:144)
at org.jboss.seam.Component.callComponentMethod(Component.java:2211)
at org.jboss.seam.Component.unwrap(Component.java:2237)
at org.jboss.seam.Component.getInstance(Component.java:2004)
at org.jboss.seam.Component.getInstance(Component.java:1950)
at org.jboss.seam.Component.getInstance(Component.java:1944)
at org.jboss.seam.Namespace.getComponentInstance(Namespace.java:55)
at org.jboss.seam.Namespace.getComponentInstance(Namespace.java:50)
at org.jboss.seam.el.SeamELResolver.resolveBase(SeamELResolver.java:177)
at org.jboss.seam.el.SeamELResolver.getValue(SeamELResolver.java:53)
at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:53)
at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:64)
at org.jboss.el.parser.AstIdentifier.getValue(AstIdentifier.java:44)
at org.jboss.el.parser.AstEmpty.getValue(AstEmpty.java:29)
at org.jboss.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
at com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:71)
at javax.faces.component.UIComponentBase.isRendered(UIComponentBase.java:370)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:880)
at javax.faces.render.Renderer.encodeChildren(Renderer.java:137)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:282)
at org.ajax4jsf.renderkit.RendererBase.renderChildren(RendererBase.java:262)
at org.richfaces.renderkit.html.PanelRenderer.doEncodeChildren(PanelRenderer.java:220)
at org.richfaces.renderkit.html.PanelRenderer.doEncodeChildren(PanelRenderer.java:215)
at org.ajax4jsf.renderkit.RendererBase.encodeChildren(RendererBase.java:121)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:886)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:892)
at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:592)
at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:100)
at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:176)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
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:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
at org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178)
at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:390)
at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:517)
at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:56)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.web.HotDeployFilter.doFilter(HotDeployFilter.java:53)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
at java.lang.Thread.run(Thread.java:619)
Caused by: org.hibernate.SessionException: Session is closed!
at org.hibernate.impl.AbstractSessionImpl.errorIfClosed(AbstractSessionImpl.java:49)
at org.hibernate.impl.SessionImpl.getNamedQuery(SessionImpl.java:1258)
at org.jbpm.db.TaskMgmtSession.findTaskInstances(TaskMgmtSession.java:61)
... 103 more
When I restart the JBoss server with cleaning all the data,tmp,work folders, then it works fine. I see a task on my personal list(the task was transferred from one list to another despite the exception).
But if I click the 'Assing to me' button, I get the same exception as before.
The same situation is when I have more tasks on both lists and when transfering a task from group task list to my task list.
Can anyone tell me what could be the cause?
I've searched the forum but couldn't find anything useful.
I can provide any additional info to help you solve this.
Regards,
Andrzej Urban
View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4251978#4251978
Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4251978
15 years, 4 months