Seam throws exception while working with DataModel
Hello.
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>
