p: The dialog box does not define properties of the Entity

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I have the following p:datatable that hold two buttons that call the View and the Add dialogs. The problem is with the Add dialog, that does not seem to be setting properties to any of the Entity objects.

When I put a break on the save() method inside ChildrenController.java all values a 'null'. I am using: PrimeFaces 5.1 | Mojarra 2.2.7 | Glassfish 4.1 |

ChildrenDataTable.xhtml

<ui:composition xmlns="http://www.w3.org/1999/xhtml"
            xmlns:h="http://java.sun.com/jsf/html"
            xmlns:f="http://java.sun.com/jsf/core"
            xmlns:p="http://primefaces.org/ui"
            xmlns:ui="http://java.sun.com/jsf/facelets">
<h:form id="form1">
        <p:dataTable var="child" value="#{childrenController.children}"
                     scrollable="true"
                     scrollHeight="500">

            <p:column>
                <f:facet name="header">First Name</f:facet>
                <h:outputText value="#{child.firstName}" />
            </p:column>
            <p:column>
                <f:facet name="header">Last Name</f:facet>
                <h:outputText value="#{child.lastName}" />
            </p:column>
            <p:column>
                <f:facet name="header">Parent Name</f:facet>
                <h:outputText value="#{child.parent.firstName}" />
            </p:column>
            <p:column>
                <f:facet name="header">Parent Last Name</f:facet>
                <h:outputText value="#{child.parent.lastName}" />
            </p:column>
            <p:column style="width:32px;text-align: center">
                <p:commandButton update=":mainForm:form1:childDetail"
                                 oncomplete="PF('childDialog').show()"
                                 process="@this"
                                 icon="ui-icon-search"
                                 title="View">
                    <f:setPropertyActionListener value="#{child}"
                                                 target="#{childrenController.selectedChild}" />
                </p:commandButton>
            </p:column>

            <p:column style="width:32px;text-align: center">
                <p:commandButton onclick="PF('childAddDialog').show()"
                                 icon="ui-icon-person"
                                 title="Add">
                </p:commandButton>
            </p:column>
        </p:dataTable>

        <!-- Dialog for the View button-->
        <p:dialog header="Child Info"
                  widgetVar="childDialog"
                  modal="false"
                  showEffect="fade"
                  hideEffect="fade"
                  resizable="false">
            <p:outputPanel id="childDetail" style="text-align:center;">
                <p:panelGrid  columns="2"
                              rendered="#{not empty childrenController.selectedChild}"
                              columnClasses="label,value">
                    <h:outputText value="First Name:" />
                    <h:outputText value="#{childrenController.selectedChild.firstName}" />

                    <h:outputText value="Last Name:" />
                    <h:outputText value="#{childrenController.selectedChild.lastName}" />

                    <h:outputText value="Birth Date:" />
                    <h:outputText value="#{childrenController.selectedChild.dateOfBirth}"/>

                    <h:outputText value="Medical Info:" />
                    <h:outputText value="#{childrenController.selectedChild.medicalInfo}" />
                </p:panelGrid>
            </p:outputPanel>
        </p:dialog>

        <!--Dialog for the Add button-->
        <p:dialog header="Register Child"
                  widgetVar="childAddDialog"
                  modal="false"
                  showEffect="fade"
                  hideEffect="fade"
                  resizable="false">
            <p:outputPanel id="childRegister" style="text-align:center;">
                <p:panelGrid  columns="2" >
                    <f:facet name="header">
                        Child info
                    </f:facet>
                    <h:outputText value="First Name:"/>
                    <h:inputText value="#{childrenController.child.firstName}"
                                 required="true"/>

                    <h:outputText value="Last Name:"/>
                    <h:inputText value="#{childrenController.child.lastName}"
                                 required="true"/>

                    <h:outputText value="Birth Date:"/>
                    <h:inputText value="#{childrenController.child.dateOfBirth}"
                                 required="true"/>

                    <h:outputText value="Medical Info:"/>
                    <p:inputTextarea value="#{childrenController.child.medicalInfo}"
                                     rows="5" cols="30" counter="display" maxlength="128"
                                     counterTemplate="{0} characters remaining." autoResize="false"/>
                    <h:outputText id="display" />
                </p:panelGrid>

                <p:panelGrid  columns="2" >
                    <f:facet name="header">
                        Parent info
                    </f:facet>
                    <h:outputText value="First Name:"/>
                    <h:inputText value="#{childrenController.parent.firstName}"
                                 required="true"/>

                    <h:outputText value="Last Name:"/>
                    <h:inputText value="#{childrenController.parent.lastName}"
                                 required="true"/>
                    <h:outputText value="Username:"/>
                    <h:inputText value="#{childrenController.user.username}"
                                 required="true"/>

                    <h:outputText value="Password1:"/>
                    <p:password id="pwd1" value="#{childrenController.password1}"
                                match="pwd2"
                                required="true"/>
                    <h:outputText value="Password2:"/>
                    <p:password id="pwd2" value="#{childrenController.user.password}"
                                required="true"/>

                    <p:commandButton  actionListener="#{childrenController.save()}"
                                      value="Save"
                                      process="@this"
                                      oncomplete="childAddDialog.hide()">
                    </p:commandButton>
                </p:panelGrid>
            </p:outputPanel>
        </p:dialog>
    </h:form>
</ui:composition>

ChildrenController.java

@Named
@SessionScoped
public class ChildrenController implements Serializable{
    // This final string will be used to set the loginn role to parent
    private static final String parentRole = "parent";
    private String password1;

@EJB
private ChildEJB childEJB;
private Child currentChild;

private Child child = new Child();

@EJB
private ParentEJB parentEJB;
private Parent parent = new Parent();

@EJB
private RoleEJB roleEJB;
private Role role = new Role(parentRole);

@EJB
private UserEJB userEJB;
private User user = new User();

public Child getCurrentChild() {
    return currentChild;
}

public void setCurrentChild(Child currentChild) {
    this.currentChild = currentChild;
}

public Child getChild() {
    return child;
}

public void setChild(Child child) {
    this.child = child;
}

public Parent getParent() {
    return parent;
}

public void setParent(Parent parent) {
    this.parent = parent;
}

public User getUser() {
    return user;
}

public void setUser(User user) {
    this.user = user;
}

public Role getRole() {
    return role;
}

public void setRole(Role role) {
    this.role = role;
}

public Child getSelectedChild() {
    return selectedChild;
}

public void setSelectedChild(Child selectedChild) {
    this.selectedChild = selectedChild;
}
private Child selectedChild;

public List<Child> getChildren() {
    return childEJB.findAll();
}

    public String getPassword1() {
    return password1;
}

public void setPassword1(String password1) {
    this.password1 = password1;
}

public void save(){
    // Map the parent to the child and vice verca
    parent.addChild(child);
    child.setParent(parent);

    // Persist the Parent
    parent = parentEJB.addNew(parent);

    // Persist the Child
    child = childEJB.addNew(child);

    // This will set the username for the parent role
    role.setUsername(user.getUsername());

    // This will set the role for the new username
    user.setRole(role);

    // This will map that the login belongs to a Parent
    user.setParent(parent);

    // Persist the new User
    user = userEJB.addNew(user);
}

}

Stack Trace

Warning:   A system exception occurred during an invocation on EJB ParentEJB, method: public entity.Parent EJB.ParentEJB.addNew(entity.Parent)
Warning:   javax.ejb.EJBException
    at com.sun.ejb.containers.EJBContainerTransactionManager.processSystemException(EJBContainerTransactionManager.java:748)
    at com.sun.ejb.containers.EJBContainerTransactionManager.completeNewTx(EJBContainerTransactionManager.java:698)
    at com.sun.ejb.containers.EJBContainerTransactionManager.postInvokeTx(EJBContainerTransactionManager.java:503)
    at com.sun.ejb.containers.BaseContainer.postInvokeTx(BaseContainer.java:4566)
    at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:2074)
    at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:2044)
    at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:220)
    at com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate.invoke(EJBLocalObjectInvocationHandlerDelegate.java:88)
    at com.sun.proxy.$Proxy250.addNew(Unknown Source)
    at EJB.__EJB31_Generated__ParentEJB__Intf____Bean__.addNew(Unknown Source)
    at mb.ChildrenController.save(ChildrenController.java:110)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at javax.el.ELUtil.invokeMethod(ELUtil.java:332)
    at javax.el.BeanELResolver.invoke(BeanELResolver.java:537)
    at javax.el.CompositeELResolver.invoke(CompositeELResolver.java:256)
    at com.sun.el.parser.AstValue.invoke(AstValue.java:283)
    at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:304)
    at org.jboss.weld.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:40)
    at org.jboss.weld.el.WeldMethodExpression.invoke(WeldMethodExpression.java:50)
    at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
    at javax.faces.event.MethodExpressionActionListener.processAction(MethodExpressionActionListener.java:147)
    at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88)
    at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:813)
    at javax.faces.component.UICommand.broadcast(UICommand.java:300)
    at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790)
    at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282)
    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:198)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:646)
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:415)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:282)
    at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459)
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167)
    at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:201)
    at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:175)
    at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235)
    at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:284)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:201)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:133)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:112)
    at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
    at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:561)
    at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:565)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:545)
    at java.lang.Thread.run(Thread.java:745)
Caused by: javax.validation.ConstraintViolationException: Validation failed for classes [entity.Parent] during persist time for groups [javax.validation.groups.Default, ]
List of constraint violations:[
    ConstraintViolationImpl{interpolatedMessage='may not be null', propertyPath=lastName, rootBeanClass=class entity.Parent, messageTemplate='{javax.validation.constraints.NotNull.message}'}
    ConstraintViolationImpl{interpolatedMessage='may not be null', propertyPath=firstName, rootBeanClass=class entity.Parent, messageTemplate='{javax.validation.constraints.NotNull.message}'}
]
    at org.hibernate.cfg.beanvalidation.BeanValidationEventListener.validate(BeanValidationEventListener.java:160)
    at org.hibernate.cfg.beanvalidation.BeanValidationEventListener.onPreInsert(BeanValidationEventListener.java:95)
    at org.hibernate.action.internal.EntityIdentityInsertAction.preInsert(EntityIdentityInsertAction.java:202)
    at org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:91)
    at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:480)
    at org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:191)
    at org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:175)
    at org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:210)
    at org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:324)
    at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:288)
    at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:194)
    at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:125)
    at org.hibernate.jpa.event.internal.core.JpaPersistEventListener.saveWithGeneratedId(JpaPersistEventListener.java:84)
    at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:206)
    at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:149)
    at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:75)
    at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:807)
    at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:780)
    at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:785)
    at org.hibernate.jpa.spi.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:1181)
    at com.sun.enterprise.container.common.impl.EntityManagerWrapper.persist(EntityManagerWrapper.java:287)
    at EJB.ParentEJB.addNew(ParentEJB.java:31)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1081)
    at org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1153)
    at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:4786)
    at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:656)
    at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:822)
    at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:608)
    at org.jboss.weld.ejb.AbstractEJBRequestScopeActivationInterceptor.aroundInvoke(AbstractEJBRequestScopeActivationInterceptor.java:46)
    at org.jboss.weld.ejb.SessionBeanInterceptor.aroundInvoke(SessionBeanInterceptor.java:52)
    at sun.reflect.GeneratedMethodAccessor166.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:883)
    at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:822)
    at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:608)
    at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.doCall(SystemInterceptorProxy.java:163)
    at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.aroundInvoke(SystemInterceptorProxy.java:140)
    at sun.reflect.GeneratedMethodAccessor168.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:883)
    at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:822)
    at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:369)
    at com.sun.ejb.containers.BaseContainer.__intercept(BaseContainer.java:4758)
    at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:4746)
    at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:212)
    ... 54 more


You didn't process your components in your question's code. What you did there to fix the problem in your own answer is including your form in the list of UIComponents to process. That means that JSF will not look at all your input components in your form and that's why it will not retrieve any values you entered in those fields to set them in your backing bean.

To get a better understanding of what process means, you may look at this question.