jsf2/RF4 'a4j:commandButton' oncomplete processing nullifies backing bean's member variables
I have an entry form with Seam-generated Entity and EntityHome type backing beans. Since the user wants a confirmation pop up dialog before saving the entered data, I've replaced the auto-generated 'h:commandButton' with a 'a4j:commandButton' and attached a modal panel to its 'oncomplete' event:
the Edit.xhtml entry form bit:
. . . . .
<div class="actionButtons">
<a:commandButton id="save"
value="Save"
oncomplete="#{rich:component('confirmCreatePanel')}.show();"
disabled="#{!userProjectRolesHome.wired}"
rendered="#{!userProjectRolesHome.managed}">
<s:conversationId/>
</a:commandButton>
</div>
<rich:popupPanel modal="true" id="confirmCreatePanel" moveable="false" resizeable="false" height="120">
<f:facet name="header">Confirm</f:facet>
<div class="actionButtons">
<rich:panel style="align:center;">
<h:outputText value="Are you sure you want to create this ?" />
<table width="100%">
<tbody>
<tr>
<td align="center" width="50%">
<a:commandButton type="submit" value="Yes" action="#{userProjectRolesHome.persist}"
oncomplete="#{rich:component('confirmCreatePanel')}.hide()"/>
</td>
<td align="center" width="50%">
<a:commandButton type="submit" value="No" onclick="#{rich:component('confirmCreatePanel')}.hide()"/>
</td>
</tr>
</tbody>
</table>
</rich:panel>
</div>
</rich:popupPanel>
the backing entity bean:
package clahrc.entity;
// Generated 22-Oct-2012 11:15:44 by Hibernate Tools 3.4.0.CR1
import javax.persistence.AttributeOverride;
import javax.persistence.AttributeOverrides;
import javax.persistence.Column;
import javax.persistence.EmbeddedId;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.Table;
import javax.validation.constraints.NotNull;
/**
* UserProjectRoles generated by hbm2java
*/
@Entity
@Table(name="user_project_roles",catalog="clahrc2")
public class UserProjectRoles implements java.io.Serializable {
private static final long serialVersionUID = 1L;
private UserProjectRolesId id;
private Users users;
private Projects projects;
private Roles roles;
public UserProjectRoles() {
}
public UserProjectRoles(UserProjectRolesId id, Users users, Projects projects, Roles roles) {
this.id = id;
this.users = users;
this.projects = projects;
this.roles = roles;
}
@EmbeddedId
@AttributeOverrides( {
@AttributeOverride(name="userId", column=@Column(name="User_ID", nullable=false) ),
@AttributeOverride(name="projectId", column=@Column(name="Project_ID", nullable=false) ) } )
@NotNull
public UserProjectRolesId getId() {
return this.id;
}
public void setId(UserProjectRolesId id) {
this.id = id;
}
@ManyToOne(fetch=FetchType.LAZY)
@JoinColumn(name="User_ID", nullable=false, insertable=false, updatable=false)
@NotNull
public Users getUsers() {
return this.users;
}
public void setUsers(Users users) {
this.users = users;
}
@ManyToOne(fetch=FetchType.EAGER)
@JoinColumn(name="Project_ID", nullable=false, insertable=false, updatable=false)
@NotNull
public Projects getProjects() {
return this.projects;
}
public void setProjects(Projects projects) {
this.projects = projects;
}
@ManyToOne(fetch=FetchType.EAGER)
@JoinColumn(name="Role_ID", nullable=false)
@NotNull
public Roles getRoles() {
return this.roles;
}
public void setRoles(Roles roles) {
this.roles = roles;
}
}
and this is the backing bean's Home class 'userProjectRolesHome' :
package clahrc.session;
import java.util.Map;
import javax.faces.model.SelectItem;
import javax.persistence.NoResultException;
import org.jboss.seam.annotations.In;
import org.jboss.seam.annotations.Logger;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Transactional;
import org.jboss.seam.framework.EntityHome;
import org.jboss.seam.international.StatusMessage;
import org.jboss.seam.international.StatusMessages;
import org.jboss.seam.log.Log;
import clahrc.entity.Projects;
import clahrc.entity.Roles;
import clahrc.entity.UserProjectRoles;
import clahrc.entity.UserProjectRolesId;
import clahrc.entity.Users;
@Name("userProjectRolesHome")
public class UserProjectRolesHome extends EntityHome<UserProjectRoles> {
@In(create = true) UsersHome usersHome;
@In(create = true) ProjectsHome projectsHome;
@In(create = true) RolesHome rolesHome;
private static final long serialVersionUID = 1L;
public void setUserProjectRolesId(UserProjectRolesId id) {
setId(id);
}
public UserProjectRolesId getUserProjectRolesId() {
return (UserProjectRolesId) getId();
}
public UserProjectRolesHome(){
setUserProjectRolesId( new UserProjectRolesId() );
}
@Override
public boolean isIdDefined() {
if ( getUserProjectRolesId().getUserId() == 0 ) return false;
if ( getUserProjectRolesId().getProjectId() == 0 ) return false;
return true;
}
@Override
protected UserProjectRoles createInstance() {
UserProjectRoles userProjectRoles = new UserProjectRoles();
userProjectRoles.setId( new UserProjectRolesId() );
return userProjectRoles;
}
public void load() {
if (isIdDefined()) {
wire();
}
}
public void wire() {
getInstance();
Users users = usersHome.getDefinedInstance();
if ( users != null ) {
getInstance().setUsers( users );
getInstance().getId().setUserId( users.getId() );
}
Projects projects = projectsHome.getDefinedInstance();
if ( projects != null ) {
getInstance().setProjects( projects );
getInstance().getId().setProjectId( projects.getId() );
}
Roles roles=rolesHome.getDefinedInstance();
if ( roles != null ) {
getInstance().setRoles(roles);
}
}
public boolean isWired() {
if ( getInstance().getUsers() == null ) return false;
if ( getInstance().getProjects() == null ) return false;
if ( getInstance().getRoles() == null ) return false;
return true;
}
public UserProjectRoles getDefinedInstance() {
return isIdDefined() ? getInstance() : null;
}
@Override
public String persist() {
String PersistResult = null;
try {
PersistResult = super.persist();
// user project role creation successful - email notification
//mailSender.sendNewRole(......);
} catch ( Exception exc ) {
//... log the exception
return PersistResult;
}
}
When clicked on the 'Save' button the 'confirmCreatePanel' pops up OK, but then when the user clicks on the mod.panel 'Yes' and the 'persist()' is called I get an Exception complaining about the member variables 'users', 'projects' and 'roles' being 'null'.
If I call 'persist()' from the 'action' attribute of the either the 'a4j:commandButton' or 'h:commandButton' everything works OK. the 'oncomplete' processing messes the things up and it used to work.
This same code works with Seam 2.2.2.Final/RF3.3.3/JSF1.2. it's not working now after an upgrade to Seam2.3.0.Final/RF4/JSF2 what's changed here ?
2013-02-06 12:57:50,394 ERROR [uk.ac.imperial.clahrc.session.UserProjectRolesHome] user-project-role persisting or emailing failed:
javax.validation.ConstraintViolationException: Validation failed for classes [clahrc.entity.UserProjectRoles] during persist time for groups [javax.validation.groups.Default, ]
List of constraint violations:[
ConstraintViolationImpl{interpolatedMessage='may not be null', propertyPath=projects, rootBeanClass=class clahrc.entity.UserProjectRoles, messageTemplate='{javax.validation.constraints.NotNull.message}'}
ConstraintViolationImpl{interpolatedMessage='may not be null', propertyPath=users, rootBeanClass=class clahrc.entity.UserProjectRoles, messageTemplate='{javax.validation.constraints.NotNull.message}'}
ConstraintViolationImpl{interpolatedMessage='may not be null', propertyPath=roles, rootBeanClass=class clahrc.entity.UserProjectRoles, messageTemplate='{javax.validation.constraints.NotNull.message}'}
]
at org.hibernate.cfg.beanvalidation.BeanValidationEventListener.validate(BeanValidationEventListener.java:159)
at org.hibernate.cfg.beanvalidation.BeanValidationEventListener.onPreInsert(BeanValidationEventListener.java:94)
at org.hibernate.action.internal.EntityInsertAction.preInsert(EntityInsertAction.java:175)
at org.hibernate.action.internal.EntityInsertAction.execute(EntityInsertAction.java:73)
at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:272)
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:264)
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:186)
at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:326)
at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:52)
at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1081)
at org.hibernate.ejb.AbstractEntityManagerImpl.flush(AbstractEntityManagerImpl.java:973)
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:597)
at org.jboss.seam.persistence.EntityManagerInvocationHandler.invoke(EntityManagerInvocationHandler.java:46)
at $Proxy77.flush(Unknown Source)
at org.jboss.seam.framework.EntityHome.persist(EntityHome.java:85)
at clahrc.session.UserProjectRolesHome.persist(UserProjectRolesHome.java:104)
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:597)
at org.jboss.seam.util.Reflections.invoke(Reflections.java:22)
at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:32)
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.core.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:77)
at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
at org.jboss.seam.transaction.TransactionInterceptor$1.work(TransactionInterceptor.java:97)
at org.jboss.seam.util.Work.workInTransaction(Work.java:61)
at org.jboss.seam.transaction.TransactionInterceptor.aroundInvoke(TransactionInterceptor.java:91)
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:186)
at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:104)
at clahrc.session.UserProjectRolesHome_$$_javassist_seam_21.persist(UserProjectRolesHome_$$_javassist_seam_21.java)
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:597)
at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:335)
at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:348)
at org.jboss.el.parser.AstPropertySuffix.invoke(AstPropertySuffix.java:58)
at org.jboss.el.parser.AstValue.invoke(AstValue.java:96)
at org.jboss.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:276)
at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
at javax.faces.component.UICommand.broadcast(UICommand.java:315)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:60)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
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.web.HotDeployFilter.doFilter(HotDeployFilter.java:53)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:397)
at org.jboss.as.jpa.interceptor.WebNonTxEmCloserValve.invoke(WebNonTxEmCloserValve.java:50)
at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930)
at java.lang.Thread.run(Thread.java:662)