Seam throws exception while working with DataModel
lamerbot Nov 29, 2006 5:13 AMHello.
I'm new to seam and i want to integrate seam capability with AndroMDA product.
I use AndroMDA for generating EJB3 and DAOs.
I made a simple application that allows users login and see userlist.
There are some strangeness:
After user login he able to see userslist. There are an link to CreateNewUser from that page. When user created it's rediercts toViewAllUsers. All work's fine, but:
When i add capability to delete User (delete button in userlist according to seam examples) i got an error:
12:07:22,138 ERROR [[Faces Servlet]] Servlet.service() for servlet Faces Servlet threw exception javax.faces.FacesException: Error calling action method of component with id _id0:_id2_4:_id13 at org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:7 4) at javax.faces.component.UICommand.broadcast(UICommand.java:106) at javax.faces.component.UIData.broadcast(UIData.java:338) at javax.faces.component.UIViewRoot._broadcastForPhase(UIViewRoot.java:90) at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:164) at org.apache.myfaces.lifecycle.LifecycleImpl.invokeApplication(LifecycleImpl.java:316) at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:86) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:106) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.j ava:252) 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.j ava: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.ja va:175) 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$Http11ConnectionHandler.processConnection(Htt p11BaseProtocol.java:664) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112) at java.lang.Thread.run(Thread.java:595) Caused by: javax.faces.el.EvaluationException: Exception while invoking expression #{userService.del eteUser} at org.apache.myfaces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:153) at org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:6 3) ... 25 more Caused by: javax.ejb.EJBException: java.lang.IllegalArgumentException: could not set field value: us erService.userDataModel at org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx(Ejb3TxPolicy.java:69) at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:83) at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:197) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor .java:62) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.jav a:78) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:1 06) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.ejb3.stateless.StatelessContainer.localInvoke(StatelessContainer.java:181) at org.jboss.ejb3.stateless.StatelessLocalProxy.invoke(StatelessLocalProxy.java:79) at $Proxy871.deleteUser(Unknown Source) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.apache.myfaces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:129) ... 26 more Caused by: java.lang.IllegalArgumentException: could not set field value: userService.userDataModel at org.jboss.seam.Component.setFieldValue(Component.java:1214) at org.jboss.seam.Component.injectDataModelSelection(Component.java:909) at org.jboss.seam.Component.injectDataModelSelection(Component.java:874) at org.jboss.seam.Component.inject(Component.java:796) at org.jboss.seam.interceptors.BijectionInterceptor.bijectTargetComponent(BijectionIntercept or.java:30) at sun.reflect.GeneratedMethodAccessor594.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.jboss.seam.util.Reflections.invoke(Reflections.java:13) at org.jboss.seam.interceptors.Interceptor.aroundInvoke(Interceptor.java:90) at org.jboss.seam.interceptors.SeamInvocationContext.proceed(SeamInvocationContext.java:60) at org.jboss.seam.interceptors.ConversationInterceptor.endOrBeginLongRunningConversation(Con versationInterceptor.java:82) at sun.reflect.GeneratedMethodAccessor593.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.jboss.seam.util.Reflections.invoke(Reflections.java:13) at org.jboss.seam.interceptors.Interceptor.aroundInvoke(Interceptor.java:90) at org.jboss.seam.interceptors.SeamInvocationContext.proceed(SeamInvocationContext.java:60) at org.jboss.seam.interceptors.BusinessProcessInterceptor.manageBusinessProcessContext(Busin essProcessInterceptor.java:60) at sun.reflect.GeneratedMethodAccessor592.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.jboss.seam.util.Reflections.invoke(Reflections.java:13) at org.jboss.seam.interceptors.Interceptor.aroundInvoke(Interceptor.java:90) at org.jboss.seam.interceptors.SeamInvocationContext.proceed(SeamInvocationContext.java:60) at org.jboss.seam.interceptors.RemoveInterceptor.removeIfNecessary(RemoveInterceptor.java:39 ) at sun.reflect.GeneratedMethodAccessor591.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.jboss.seam.util.Reflections.invoke(Reflections.java:13) at org.jboss.seam.interceptors.Interceptor.aroundInvoke(Interceptor.java:90) at org.jboss.seam.interceptors.SeamInvocationContext.proceed(SeamInvocationContext.java:60) at org.jboss.seam.ejb.SeamInterceptor.aroundInvokeInContexts(SeamInterceptor.java:73) at org.jboss.seam.ejb.SeamInterceptor.aroundInvoke(SeamInterceptor.java:45) at sun.reflect.GeneratedMethodAccessor656.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.jboss.ejb3.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:118) at org.jboss.ejb3.interceptor.EJB3InterceptorsInterceptor.invoke(EJB3InterceptorsInterceptor .java:63) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedE ntityManagerInterceptor.java:54) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79) ... 46 more Caused by: java.lang.IllegalArgumentException at sun.reflect.UnsafeObjectFieldAccessorImpl.set(UnsafeObjectFieldAccessorImpl.java:63) at java.lang.reflect.Field.set(Field.java:656) at org.jboss.seam.Component.setFieldValue(Component.java:1210) ... 90 more
I try many wariants and now i'm going mad
There are code of my userService class:
@Name("userService") @Stateless @Scope(SESSION) @javax.ejb.Local({com.accarda.manobobs.service.UsersServiceLocal.class}) @javax.ejb.Remote({com.accarda.manobobs.service.UsersServiceRemote.class}) @Interceptors(SeamInterceptor.class) public class UsersServiceBean extends com.accarda.manobobs.service.UsersServiceBase { //seam injections @In(required=false) private UserVO2Seam userVO2Seam; @Logger private Log log; @DataModel private List<UserVO2Seam> userDataModel; @DataModelSelection @In(required=false) @Out(required=false) private UserVO2Seam selectionUser; // --------------- Constructors --------------- public UsersServiceBean() { super(); } public List<UserVO2Seam> getUserDataModel() { return userDataModel; } public void setUserDataModel(List<UserVO2Seam> userDataModel) { this.userDataModel = userDataModel; } // -------- Business Methods Impl -------------- protected void handleSelect() throws Exception { // TODO Auto-generated method stub } /** * @see com.accarda.manobobs.service.UsersServiceBase#createUser(com.accarda.manobobs.model.vo.UsersVO[]) */ protected String handleCreateUserFromSeam() throws Exception { String result = "userlist"; try{ updateUser(userVO2Seam); userDataModel = new ArrayList(getUsersDao().loadAll(UsersDao.TRANSFORM_USERSVO)); } catch (Exception e) { log.error(e.getMessage()); result = "creatingerror"; FacesMessages.instance().add("Nick name must be unique"); } return result; } /** * @see com.accarda.manobobs.service.UsersServiceBase#updateUser(UsersVO) */ protected void handleUpdateUser(UsersVO userVO) throws Exception { getUsersDao().update(getUsersDao().usersVOToEntity(userVO)); } /** * @see com.accarda.manobobs.service.UsersServiceBase#deleteUser() */ protected void handleDeleteUser() throws Exception { if(selectionUser != null){ getUsersDao().remove(selectionUser.getId()); userDataModel.remove(selectionUser); } } /** * @see com.accarda.manobobs.service.UsersServiceBase#createUser(com.accarda.manobobs.model.vo.UsersVO[]) */ protected void handleCreateUser(com.accarda.manobobs.model.vo.UsersVO userVO) throws java.lang.Exception { getUsersDao().create(userVO.getFirstName(), userVO.getLastName(), userVO.getPassword(), userVO.getNickname()); log.info("User Created"); } /** * @see com.accarda.manobobs.service.UsersServiceBase#populateUsers() */ protected void handlePopulateUsers() throws Exception { } @Factory("userDataModel") public void findUsers() { log.info("-------POPULATING-----USERS-------"); try{ userDataModel = new ArrayList(getUsersDao().loadAll(UsersDao.TRANSFORM_USERSVO)); } catch (Throwable th) { log.error(th); } } /** * @see com.accarda.manobobs.service.UsersServiceBase#deleteUser(java.lang.Long) */ protected void handleDeleteUser(java.lang.Long id) throws java.lang.Exception { // TODO: put your implementation here. throw new java.lang.UnsupportedOperationException( "com.accarda.manobobs.service.UsersServiceBean.handleDeleteUser(java.lang.Long id) Not implemented!"); } /** * @see com.accarda.manobobs.service.UsersServiceBase#getUser(java.lang.Long) */ protected com.accarda.manobobs.model.vo.UsersVO handleGetUser( java.lang.Long id) throws java.lang.Exception { // TODO: put your implementation here. // Dummy return value, just that the file compiles return null; } /** * @see com.accarda.manobobs.service.UsersServiceBase#getAllUsers() */ protected com.accarda.manobobs.model.vo.UsersVO[] handleGetAllUsers() throws java.lang.Exception { // TODO: put your implementation here. // Dummy return value, just that the file compiles return null; } // -------- Lifecycle Callback Impl -------------- }
UserServiceBase code:
@javax.ejb.TransactionAttribute(javax.ejb.TransactionAttributeType.REQUIRED) @javax.ejb.Remote({com.accarda.manobobs.service.UsersServiceRemote.class}) public abstract class UsersServiceBase implements com.accarda.manobobs.service.UsersServiceRemote { // ------ Session Context Injection ------ @javax.annotation.Resource protected javax.ejb.SessionContext context; // ------ Persistence Context Definitions -------- /** * Inject persistence context manobonsweb */ @javax.persistence.PersistenceContext(unitName = "manobonsweb") protected javax.persistence.EntityManager emanager; // ------ DAO Injection Definitions -------- /** * Inject DAO UsersDao */ @javax.ejb.EJB private com.accarda.manobobs.model.domain.UsersDao usersDao; // --------------- Constructors --------------- public UsersServiceBase() { super(); } // ------ DAO Getters -------- /** * Get the injected DAO UsersDao */ protected com.accarda.manobobs.model.domain.UsersDao getUsersDao() { return this.usersDao; } // -------- Business Methods -------------- /** * */ @javax.ejb.TransactionAttribute(javax.ejb.TransactionAttributeType.REQUIRED) public void createUser(com.accarda.manobobs.model.vo.UsersVO userVO) { if (userVO == null) { throw new IllegalArgumentException( "com.accarda.manobobs.service.UsersServiceBean.createUser(com.accarda.manobobs.model.vo.UsersVO userVO) - 'userVO' can not be null"); } try { this.handleCreateUser(userVO); } catch (Throwable th) { throw new com.accarda.manobobs.service.UsersServiceException( "Error performing 'com.accarda.manobobs.service.UsersService.createUser(com.accarda.manobobs.model.vo.UsersVO userVO)' --> " + th, th); } } /** * Performs the core logic for {@link #createUser(com.accarda.manobobs.model.vo.UsersVO)} */ protected abstract void handleCreateUser(com.accarda.manobobs.model.vo.UsersVO userVO) throws java.lang.Exception; /** * */ @javax.ejb.TransactionAttribute(javax.ejb.TransactionAttributeType.REQUIRED) public void deleteUser(java.lang.Long id) { if (id == null) { throw new IllegalArgumentException( "com.accarda.manobobs.service.UsersServiceBean.deleteUser(java.lang.Long id) - 'id' can not be null"); } try { this.handleDeleteUser(id); } catch (Throwable th) { throw new com.accarda.manobobs.service.UsersServiceException( "Error performing 'com.accarda.manobobs.service.UsersService.deleteUser(java.lang.Long id)' --> " + th, th); } } /** * Performs the core logic for {@link #deleteUser(java.lang.Long)} */ protected abstract void handleDeleteUser(java.lang.Long id) throws java.lang.Exception; /** * */ @javax.ejb.TransactionAttribute(javax.ejb.TransactionAttributeType.REQUIRED) public com.accarda.manobobs.model.vo.UsersVO getUser(java.lang.Long id) { if (id == null) { throw new IllegalArgumentException( "com.accarda.manobobs.service.UsersServiceBean.getUser(java.lang.Long id) - 'id' can not be null"); } try { return this.handleGetUser(id); } catch (Throwable th) { throw new com.accarda.manobobs.service.UsersServiceException( "Error performing 'com.accarda.manobobs.service.UsersService.getUser(java.lang.Long id)' --> " + th, th); } } /** * Performs the core logic for {@link #getUser(java.lang.Long)} */ protected abstract com.accarda.manobobs.model.vo.UsersVO handleGetUser(java.lang.Long id) throws java.lang.Exception; /** * */ @javax.ejb.TransactionAttribute(javax.ejb.TransactionAttributeType.REQUIRED) public com.accarda.manobobs.model.vo.UsersVO[] getAllUsers() { try { return this.handleGetAllUsers(); } catch (Throwable th) { throw new com.accarda.manobobs.service.UsersServiceException( "Error performing 'com.accarda.manobobs.service.UsersService.getAllUsers()' --> " + th, th); } } /** * Performs the core logic for {@link #getAllUsers()} */ protected abstract com.accarda.manobobs.model.vo.UsersVO[] handleGetAllUsers() throws java.lang.Exception; /** * */ @javax.ejb.TransactionAttribute(javax.ejb.TransactionAttributeType.REQUIRED) public java.lang.String createUserFromSeam() { try { return this.handleCreateUserFromSeam(); } catch (Throwable th) { throw new com.accarda.manobobs.service.UsersServiceException( "Error performing 'com.accarda.manobobs.service.UsersService.createUserFromSeam()' --> " + th, th); } } /** * Performs the core logic for {@link #createUserFromSeam()} */ protected abstract java.lang.String handleCreateUserFromSeam() throws java.lang.Exception; /** * */ @javax.ejb.TransactionAttribute(javax.ejb.TransactionAttributeType.REQUIRED) public void populateUsers() { try { this.handlePopulateUsers(); } catch (Throwable th) { throw new com.accarda.manobobs.service.UsersServiceException( "Error performing 'com.accarda.manobobs.service.UsersService.populateUsers()' --> " + th, th); } } /** * Performs the core logic for {@link #populateUsers()} */ protected abstract void handlePopulateUsers() throws java.lang.Exception; /** * */ @javax.ejb.TransactionAttribute(javax.ejb.TransactionAttributeType.REQUIRED) public void updateUser(com.accarda.manobobs.model.vo.UsersVO userVO) { if (userVO == null) { throw new IllegalArgumentException( "com.accarda.manobobs.service.UsersServiceBean.updateUser(com.accarda.manobobs.model.vo.UsersVO userVO) - 'userVO' can not be null"); } try { this.handleUpdateUser(userVO); } catch (Throwable th) { throw new com.accarda.manobobs.service.UsersServiceException( "Error performing 'com.accarda.manobobs.service.UsersService.updateUser(com.accarda.manobobs.model.vo.UsersVO userVO)' --> " + th, th); } } /** * Performs the core logic for {@link #updateUser(com.accarda.manobobs.model.vo.UsersVO)} */ protected abstract void handleUpdateUser(com.accarda.manobobs.model.vo.UsersVO userVO) throws java.lang.Exception; /** * */ @javax.ejb.TransactionAttribute(javax.ejb.TransactionAttributeType.REQUIRED) public void deleteUser() { try { this.handleDeleteUser(); } catch (Throwable th) { throw new com.accarda.manobobs.service.UsersServiceException( "Error performing 'com.accarda.manobobs.service.UsersService.deleteUser()' --> " + th, th); } } /** * Performs the core logic for {@link #deleteUser()} */ protected abstract void handleDeleteUser() throws java.lang.Exception; /** * */ @javax.ejb.TransactionAttribute(javax.ejb.TransactionAttributeType.REQUIRED) public void select() { try { this.handleSelect(); } catch (Throwable th) { throw new com.accarda.manobobs.service.UsersServiceException( "Error performing 'com.accarda.manobobs.service.UsersService.select()' --> " + th, th); } } /** * Performs the core logic for {@link #select()} */ protected abstract void handleSelect() throws java.lang.Exception; // -------- Lifecycle Callbacks -------------- }
And finally JSP code:
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h"%> <%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%> <%@ taglib uri="http://jboss.com/products/seam/taglib" prefix="s"%> <html> <head> <title>Users</title> </head> <body> <f:view> <h:form> <h2>User List</h2> <h:outputText value="No users to display" rendered="#{userDataModel.rowCount==0}" /> <h:dataTable var="user" value="#{userDataModel}" rendered="#{userDataModel.rowCount>0}"> <h:column> <f:facet name="header"> <h:outputText value="Nickname" /> </f:facet> <h:commandLink value="#{user.nickname}" action="#{userService.select}"/> </h:column> <h:column> <f:facet name="header"> <h:outputText value="First Name" /> </f:facet> <h:outputText value="#{user.firstName}" /> </h:column> <h:column> <f:facet name="header"> <h:outputText value="Last Name" /> </f:facet> <h:outputText value="#{user.lastName}" /> </h:column> <h:column> <h:commandButton value="Delete" action="#{userService.deleteUser}" /> </h:column> </h:dataTable> <h3><h:outputText value="#{selectionUser.firstName}" /></h3> <div><h:outputText value="#{selectionUser.lastName}" /></div> <s:link view="/user/CreateUser.jsp" value="Create User" /> </h:form> </f:view> </body> </html>