LinkageError: loader constraint violation

[wurzelbutz]

Hi

I'm using Richfaces 3.3.0.GA and SEAM 2.1.1 GA. When i try to implement a rich:tree i get the following exception(other rich components work fine):

09:14:58,656 WARN [ExceptionFilter] handling uncaught exception
javax.servlet.ServletException: Servlet execution threw an exception
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:313)
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$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:73)
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$Worker.run(JIoEndpoint.java:446)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.LinkageError: loader constraint violation: when resolving method "org.richfaces.component.state.TreeState.isExpanded(Lorg/richfaces/model/TreeRowKey;)Z" the class loader (instance of org/jboss/mx/loading/UnifiedClassLoader3) of the current class, org/richfaces/component/UITree, and the class loader (instance of org/jboss/mx/loading/UnifiedClassLoader3) for resolved class, org/richfaces/component/state/TreeState, have different Class objects for the type org/richfaces/model/TreeRowKey used in the signature
at org.richfaces.component.UITree.isExpanded(UITree.java:544)
at org.richfaces.renderkit.TreeRendererBase$RendererDataModelEventNavigator.<init>(TreeRendererBase.java:106)
at org.richfaces.renderkit.TreeRendererBase$RendererDataModelEventNavigator.<init>(TreeRendererBase.java:87)
at org.richfaces.renderkit.TreeRendererBase.writeContent(TreeRendererBase.java:624)
at org.richfaces.renderkit.TreeRendererBase.encodeChildren(TreeRendererBase.java:601)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:886)
at javax.faces.render.Renderer.encodeChildren(Renderer.java:137)
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)
... 41 more
09:14:58,656 WARN [ExceptionFilter] exception root cause
09:14:58,656 WARN [ExceptionFilter] running exception handlers
09:14:59,062 ERROR [STDERR] 10.02.2009 09:14:59 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/D:/Prg/JBossSeam/jboss/jboss-4.2.2.GA/server/default/deploy/Project-ear.ear/Project.war/WEB-INF/lib/jboss-seam-mail.jar!/META-INF/seam-mail.taglib.xml
09:14:59,062 ERROR [STDERR] 10.02.2009 09:14:59 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/D:/Prg/JBossSeam/jboss/jboss-4.2.2.GA/server/default/deploy/Project-ear.ear/Project.war/WEB-INF/lib/jboss-seam-pdf.jar!/META-INF/seam-pdf.taglib.xml
09:14:59,062 ERROR [STDERR] 10.02.2009 09:14:59 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/D:/Prg/JBossSeam/jboss/jboss-4.2.2.GA/server/default/deploy/Project-ear.ear/Project.war/WEB-INF/lib/jboss-seam-ui.jar!/META-INF/s.taglib.xml
09:14:59,062 ERROR [STDERR] 10.02.2009 09:14:59 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/D:/Prg/JBossSeam/jboss/jboss-4.2.2.GA/server/default/deploy/Project-ear.ear/Project.war/WEB-INF/lib/jsf-facelets.jar!/META-INF/jsf-core.taglib.xml
09:14:59,062 ERROR [STDERR] 10.02.2009 09:14:59 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/D:/Prg/JBossSeam/jboss/jboss-4.2.2.GA/server/default/deploy/Project-ear.ear/Project.war/WEB-INF/lib/jsf-facelets.jar!/META-INF/jsf-html.taglib.xml
09:14:59,078 ERROR [STDERR] 10.02.2009 09:14:59 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/D:/Prg/JBossSeam/jboss/jboss-4.2.2.GA/server/default/deploy/Project-ear.ear/Project.war/WEB-INF/lib/jsf-facelets.jar!/META-INF/jsf-ui.taglib.xml
09:14:59,078 ERROR [STDERR] 10.02.2009 09:14:59 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/D:/Prg/JBossSeam/jboss/jboss-4.2.2.GA/server/default/deploy/Project-ear.ear/Project.war/WEB-INF/lib/jsf-facelets.jar!/META-INF/jstl-core.taglib.xml
09:14:59,078 ERROR [STDERR] 10.02.2009 09:14:59 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/D:/Prg/JBossSeam/jboss/jboss-4.2.2.GA/server/default/deploy/Project-ear.ear/Project.war/WEB-INF/lib/jsf-facelets.jar!/META-INF/jstl-fn.taglib.xml
09:14:59,078 ERROR [STDERR] 10.02.2009 09:14:59 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/D:/Prg/JBossSeam/jboss/jboss-4.2.2.GA/server/default/deploy/Project-ear.ear/Project.war/WEB-INF/lib/richfaces-ui-3.3.0.GA.jar!/META-INF/a4j.taglib.xml
09:14:59,078 ERROR [STDERR] 10.02.2009 09:14:59 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/D:/Prg/JBossSeam/jboss/jboss-4.2.2.GA/server/default/lib/richfaces-ui-3.3.0.GA.jar!/META-INF/a4j.taglib.xml
09:14:59,093 ERROR [STDERR] 10.02.2009 09:14:59 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/D:/Prg/JBossSeam/jboss/jboss-4.2.2.GA/server/default/deploy/Project-ear.ear/Project.war/WEB-INF/lib/richfaces-ui-3.3.0.GA.jar!/META-INF/ajax4jsf.taglib.xml
09:14:59,093 ERROR [STDERR] 10.02.2009 09:14:59 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/D:/Prg/JBossSeam/jboss/jboss-4.2.2.GA/server/default/lib/richfaces-ui-3.3.0.GA.jar!/META-INF/ajax4jsf.taglib.xml
09:14:59,093 ERROR [STDERR] 10.02.2009 09:14:59 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/D:/Prg/JBossSeam/jboss/jboss-4.2.2.GA/server/default/deploy/Project-ear.ear/Project.war/WEB-INF/lib/richfaces-ui-3.3.0.GA.jar!/META-INF/jsp.taglib.xml
09:14:59,093 ERROR [STDERR] 10.02.2009 09:14:59 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/D:/Prg/JBossSeam/jboss/jboss-4.2.2.GA/server/default/lib/richfaces-ui-3.3.0.GA.jar!/META-INF/jsp.taglib.xml
09:14:59,109 ERROR [STDERR] 10.02.2009 09:14:59 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/D:/Prg/JBossSeam/jboss/jboss-4.2.2.GA/server/default/deploy/Project-ear.ear/Project.war/WEB-INF/lib/richfaces-ui-3.3.0.GA.jar!/META-INF/rich.taglib.xml
09:14:59,109 ERROR [STDERR] 10.02.2009 09:14:59 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/D:/Prg/JBossSeam/jboss/jboss-4.2.2.GA/server/default/lib/richfaces-ui-3.3.0.GA.jar!/META-INF/rich.taglib.xml
09:14:59,109 ERROR [STDERR] 10.02.2009 09:14:59 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/D:/Prg/JBossSeam/jboss/jboss-4.2.2.GA/server/default/deploy/Project-ear.ear/Project.war/WEB-INF/lib/richfaces-ui-3.3.0.GA.jar!/META-INF/richfaces.taglib.xml
09:14:59,109 ERROR [STDERR] 10.02.2009 09:14:59 com.sun.facelets.compiler.TagLibraryConfig loadImplicit
INFO: Added Library from: jar:file:/D:/Prg/JBossSeam/jboss/jboss-4.2.2.GA/server/default/lib/richfaces-ui-3.3.0.GA.jar!/META-INF/richfaces.taglib.xml

xhtml page:

<h:form>
 <rich:tree switchType="ajax" >
 <rich:recursiveTreeNodesAdaptor id="config"
 roots="#{listAction.rootNodes}"
 var="config"
 nodes="#{config.subProjekte}"
 >
 <rich:treeNode>
 <h:outputText value="#{config.projektName}" />
 </rich:treeNode>

 </rich:recursiveTreeNodesAdaptor>
 </rich:tree>
 </h:form>

the bean looks like this:

@Name("listAction")
public class ListAction implements ListActionInterface{

 @In
 FacesMessages facesMessages;
 @PersistenceContext(unitName="UnitA")
 EntityManager em;
 @In
 JbpmContext jbpmContext;

 private TreeState treeState;
 @DataModel
 private List<Projekt> rNodes;

 @DataModel
 private List<Projekt> childNodes = null;

 public List<Projekt> getRootNodes() {

 if (rNodes == null) {

 rNodes = em.createQuery(
 "from Projekt c where c.rootProjekt is null")
 .getResultList();
 }
 return rNodes;
 }

 @Remove @Destroy
 public void remove(){

 }
}

Class Projekt has a Method getSubProjekte which returns a List.

I really don't know what i am doing wrong :/

Hope you can help,
BR Hugo

[ilya_shaikovsky]

did you using EAR deployment? If so, where did you placed RF libraries?

[wurzelbutz]

Yes.
here is an overview of my server\deploy folder:

Project-ear.ear
-META-INF
-Project.war
-Project-ejb.jar
--WEB-INF
---lib
----richfaces-api-3.3.0.GA.jar
----richfaces-impl-3.3.0.GA.jar
----richfaces-ui-3.3.0.GA.jar
-richfaces-api-3.3.0.GA.jar
-richfaces-impl-3.3.0.GA.jar
-richfaces-ui-3.3.0.GA.jar

[ilya_shaikovsky]

api only libs should be in ear and impl and ui should be in war.

[wurzelbutz]

now it works very well, thanks a lot!

[wurzelbutz]

ok i was wrong.
The tree is displayed and i can see the top levels but as soon as i try to expand a node i get the following exception:

21:10:52,140 ERROR [STDERR] 10.02.2009 21:10:52 com.sun.facelets.FaceletViewHandler handleRenderException
SCHWERWIEGEND: Error Rendering View[/test.xhtml]
javax.faces.FacesException: org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: at.Project.ProjectTicket.Model.Projekt.subProjekte, no session or session was closed
 at org.richfaces.renderkit.TreeRendererBase.encodeAjaxChildren(TreeRendererBase.java:494)
 at org.ajax4jsf.component.UIDataAdaptor.encodeAjaxChild(UIDataAdaptor.java:454)
 at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxComponent(AjaxChildrenRenderer.java:104)
 at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxChildren(AjaxChildrenRenderer.java:67)
 at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxComponent(AjaxChildrenRenderer.java:115)
 at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxChildren(AjaxChildrenRenderer.java:67)
 at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxComponent(AjaxChildrenRenderer.java:115)
 at org.ajax4jsf.renderkit.AjaxContainerRenderer.encodeAjax(AjaxContainerRenderer.java:123)
 at org.ajax4jsf.component.AjaxViewRoot.encodeAjax(AjaxViewRoot.java:677)
 at org.ajax4jsf.component.AjaxViewRoot.encodeChildren(AjaxViewRoot.java:548)
 at javax.faces.component.UIComponent.encodeAll(UIComponent.java:886)
 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$FilterChainImpl.doFilter(SeamFilter.java:69)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:73)
 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$Worker.run(JIoEndpoint.java:446)
 at java.lang.Thread.run(Unknown Source)
Caused by: org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: at.Project.ProjectTicket.Model.Projekt.subProjekte, no session or session was closed
 at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:358)
 at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:350)
 at org.hibernate.collection.AbstractPersistentCollection.readSize(AbstractPersistentCollection.java:97)
 at org.hibernate.collection.PersistentBag.size(PersistentBag.java:225)
 at org.richfaces.model.SequenceDataModel.getRowCount(SequenceDataModel.java:91)
 at org.richfaces.model.StackingTreeModel.isEmpty(StackingTreeModel.java:110)
 at org.richfaces.model.StackingTreeModel.isLeaf(StackingTreeModel.java:267)
 at org.richfaces.component.UITree.isLeaf(UITree.java:534)
 at org.richfaces.renderkit.html.TreeNodeRenderer.doEncodeBegin(TreeNodeRenderer.java:125)
 at org.richfaces.renderkit.html.TreeNodeRenderer.doEncodeBegin(TreeNodeRenderer.java:106)
 at org.ajax4jsf.renderkit.RendererBase.encodeBegin(RendererBase.java:101)
 at javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:788)
 at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:280)
 at org.richfaces.renderkit.TreeRendererBase$DataVisitorWithLastElement.process(TreeRendererBase.java:254)
 at org.richfaces.model.AbstractTreeDataModel.processElement(AbstractTreeDataModel.java:116)
 at org.richfaces.model.StackingTreeModel.doWalk(StackingTreeModel.java:296)
 at org.richfaces.model.StackingTreeModel.walk(StackingTreeModel.java:377)
 at org.richfaces.component.UITree.walk(UITree.java:422)
 at org.richfaces.renderkit.TreeRendererBase.writeContent(TreeRendererBase.java:655)
 at org.richfaces.renderkit.TreeRendererBase.encodeAjaxChildren(TreeRendererBase.java:474)
 ... 59 more

this is my entity:

@Entity
@Name("projekt")
@Table(name="PROJEKT",schema = "A")
public class Projekt implements Serializable {

 private static final long serialVersionUID = 6790259134654495125L;

 long ProjektID
 Projekt RootProjekt;
 List<Projekt> SubProjekte;

 @Id @Column(name="PROJEKTID")
 public long getProjektID() {
 return ProjektID;
 }
 public void setProjektID(long projektID) {
 ProjektID = projektID;
 }

 @ManyToOne
 @NotFound(action=NotFoundAction.IGNORE)
 @JoinColumn(name="ROOTPROJEKTID")
 public Projekt getRootProjekt() {
 return RootProjekt;
 }
 public void setRootProjekt(Projekt rootProjekt) {
 RootProjekt = rootProjekt;
 }

 @OneToMany(mappedBy="rootProjekt",fetch=FetchType.EAGER)
 @NotFound(action=NotFoundAction.IGNORE)
 @JoinColumn(name="ROOTPROJEKTID",referencedColumnName="PROJEKTID")
 public List<Projekt> getSubProjekte() {
 return SubProjekte;
 }
 public void setSubProjekte(List<Projekt> subProjekte) {
 SubProjekte = subProjekte;
 }
}

and this is my bean:

@Stateful
@Name("listAction")
@Scope(ScopeType.CONVERSATION)
public class ListAction implements ListActionInterface{


 @PersistenceContext(unitName="unitA",type = PersistenceContextType.EXTENDED)


 private TreeState treeState;
 @DataModel
 private List<Projekt> rNodes;

 @DataModel
 private List<Projekt> childNodes = null;

 @Begin(join=true)
 public List<Projekt> getRootNodes() {

 if (rNodes == null) {

 System.out.println("In configTreeManager getrootNodes.....");

 rNodes = em.createQuery(
 "from Projekt c where c.rootProjekt is null")
 .getResultList();
 System.out.println("Done");
 System.out.println("rNodes size:"+rNodes.size());
 }
 return rNodes;
 }

 @Remove @Destroy
 public void remove(){

 }
}

as you can see i use fetchType.EAGER so i dont understand why there is a LazyInitializationException.

do you have an idea why this happens?

[wurzelbutz]

"wurzelbutz" wrote:
now it works very well, thanks a lot!

strange things are going on...
today i started my application and i again get the

java.lang.LinkageError: loader constraint violation: when resolving method "org.richfaces.component.state.TreeState.isExpanded(Lorg/richfaces/model/TreeRowKey;)Z" the class loader (instance of org/jboss/mx/loading/UnifiedClassLoader3) of the current class, org/richfaces/component/UITree, and the class loader (instance of org/jboss/mx/loading/UnifiedClassLoader3) for resolved class, org/richfaces/component/state/TreeState, have different Class objects for the type org/richfaces/model/TreeRowKey used in the signature

error. i checked the file system, it is the same as yesterday.
:/

[wurzelbutz]

any hint on what is going wrong?

thanks in advance.
hugo

[nbelaevski]

as you can see i use fetchType.EAGER so i dont understand why there is a LazyInitializationException.

do you have an idea why this happens?

Please try to use Seam-managed persistence context borrowed by @In annotation (see Seam reference for more information).

[wurzelbutz]

thanks for the answer. i'll have a try as soon as i manage to solve the error of the post on Feb 11.