1 Reply Latest reply on Feb 11, 2013 10:56 AM by Ken Clahrc

    jsf2/RF4 'a4j:commandButton' oncomplete processing nullifies backing bean's member variables

    Ken Clahrc Newbie

      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)