JSF 2.0包括ICEfaces組件，試圖將JPA 2.0用於持久性失敗（nullpointException）和JBOSS獨立服務器
[英]JSF 2.0 includes ICEfaces components, trying to use JPA 2.0 for Persistence failing(nullpointException) with JBOSS standalone server
問題描述
我正在嘗試編寫一個僅使用表單的小型網站。 我使用Eclipse IDE（indigo）和JBOSS AS 7.1服務器。 我已經使用JSF 2.0和最新的ICEfaces組件進行了編碼。 現在，我已經添加了JPA組件以讀取/寫入oracle數據庫。 實體是為示例表創建的，我能夠映射到數據庫。 但是在運行時，當我嘗試從bean調用實體管理器以獲取持久性單元時，它將獲得null值。 我不確定我在哪里做錯了。
這是實體，持久性文件，bean，xhtml的代碼
package org.icefaces.training.applicant.view.model;
import java.io.Serializable;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.List;
import javax.annotation.PostConstruct;
import javax.annotation.Resource;
import javax.faces.application.FacesMessage;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;
import javax.faces.context.FacesContext;
import javax.faces.event.ActionEvent;
import javax.faces.event.AjaxBehaviorEvent;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import javax.persistence.PersistenceUnit;
import javax.persistence.Query;
import javax.transaction.NotSupportedException;
import javax.transaction.SystemException;
import javax.transaction.UserTransaction;
import org.icefaces.training.applicant.model.EmployeesEntity;
@ManagedBean(name = "jobApplicant")
@ViewScoped
public class JobApplicant implements Serializable {
private String firstName;
private String lastName;
private String country;
private String title;
private Integer salary;
private String email;
private String subject;
private String resume;
private String lastName1;
@PersistenceUnit(unitName="jobApplication")
private EntityManagerFactory emf;
public String getValue() throws NotSupportedException, SystemException
{
EntityManagerFactory emf = Persistence.createEntityManagerFactory("jobApplication");
EntityManager em = emf.createEntityManager();
EmployeesEntity emp = em.find(EmployeesEntity.class, 207);
return emp.getLAST_NAME();
}
public String getSubject() {
return subject;
}
public void setSubject(String subject) {
this.subject = subject;
}
public String getResume() {
return resume;
}
public void setResume(String resume) {
this.resume = resume;
}
public void submit(ActionEvent ae) {
if (firstName.equals("joe") && lastName.equals("bush")){
String str="Joe Bush is already existed";
FacesMessage facesMessage = new FacesMessage(str);
FacesContext facesContext = FacesContext.getCurrentInstance();
String clientID = null; // this is a global message
facesContext.addMessage(clientID, facesMessage);
}
}
@Override
public String toString() {
return "jobApplicant " + super.toString();
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public Integer getSalary() {
return salary;
}
public void setSalary(Integer salary) {
this.salary = salary;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
@PostConstruct
public void clear() {
setFirstName("");
setLastName("");
setCountry("");
setSalary(0);
setEmail("");
setTitle(null);
}
}
實體
package org.icefaces.training.applicant.model;
import java.io.Serializable;
import java.lang.Number;
import java.lang.String;
import javax.persistence.*;
import static javax.persistence.AccessType.FIELD;
/**
* Entity implementation class for Entity: EmployeesEntity
*
*/
@Entity
@Table(schema = "TUHRA", name = "EMPLOYEES")
public class EmployeesEntity implements Serializable {
@Id
private Number Employee_ID;
private String FIRST_NAME;
private String LAST_NAME;
private static final long serialVersionUID = 1L;
public EmployeesEntity() {
super();
}
public Number getEmployee_ID() {
return this.Employee_ID;
}
public void setEmployee_ID(Number Employee_ID) {
this.Employee_ID = Employee_ID;
}
public String getFIRST_NAME() {
return this.FIRST_NAME;
}
public void setFIRST_NAME(String FIRST_NAME) {
this.FIRST_NAME = FIRST_NAME;
}
public String getLAST_NAME() {
return this.LAST_NAME;
}
public void setLAST_NAME(String LAST_NAME) {
this.LAST_NAME = LAST_NAME;
}
}
Persistence.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
<persistence-unit name="jobApplication">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<!-- <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider> -->
<jta-data-source>java:/OracleJINDI</jta-data-source>
<class>org.icefaces.training.applicant.model.EmployeesEntity</class>
<properties>
<!-- <property name="hibernate.connection.driver_class" value="oracle.jdbc.driver" />
<property name="hibernate.connection.url" value="jdbc:oracle:thin:@oracleapps:1521:PROD" />
<property name="hibernate.connection.username" value="tuhra" />
<property name="hibernate.connection.password" value="tuhra" /> -->
</properties>
</persistence-unit>
</persistence>
的xhtml
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:icecore="http://www.icefaces.org/icefaces/core" xmlns:ace="http://www.icefaces.org/icefaces/components" xmlns:ice="http://www.icesoft.com/icefaces/component">
<h:head>
</h:head>
<h:body >
<ui:composition template="/WEB-INF/templates/template.xhtml" >
<ui:param name="title" value="Applicant System" />
<ui:define name="header">
<h:graphicImage library="images" name="icefaces.png" />
<h:outputStylesheet library="css" name="jobApplication.css" />
</ui:define>
<ui:define name="menu">
<h:button outcome="applicants" value="Listing Page" />
</ui:define>
<ui:define name="content">
<h:messages globalOnly="true" />
<h:form>
<h:panelGrid columns="3">
<h:outputLabel for="title" value="Title: " />
<h:selectOneRadio id="title" value="#{jobApplicant.title}" required="true">
<f:selectItem itemLabel="Dr." itemValue="1"/>
<f:selectItem itemLabel="Ms." itemValue="2"/>
<f:selectItem itemLabel="Mrs." itemValue="3"/>
<f:selectItem itemLabel="Miss." itemValue="4"/>
<f:selectItem itemLabel="Mr." itemValue="5"/>
</h:selectOneRadio>
<h:message for="title" />
<h:outputLabel for="firstName" value="First Name"></h:outputLabel>
<h:inputText id="firstName" value="#{jobApplicant.firstName}" required="true"
converter="wordCapitalization"/>
<h:message for="firstName" />
<h:outputLabel for="lastName" value="Last Name"></h:outputLabel>
<h:inputText id="lastName" value="#{jobApplicant.lastName}" required="true"
converter="wordCapitalization" />
<h:message for="lastName" />
<h:outputLabel for="country" value="Country" />
<h:selectOneMenu id="country" value="#{jobApplicant.country}" required="true">
<f:selectItem itemLabel="-Select-" noSelectionOption="true"/>
<f:selectItems value="#{countryList.countries}"/>
</h:selectOneMenu>
<h:message for="country" />
<h:outputLabel for="salary" value="Salary: " />
<h:inputText id="salary" value="#{jobApplicant.salary}" required="true">
<f:validateLongRange minimum="1" maximum="1000000"/>
<f:convertNumber type="currency" />
</h:inputText>
<h:message for="salary" />
<h:outputLabel for="email" value="Email: " />
<h:inputText id="email" value="#{jobApplicant.email}" validator="emailValidator" required="true"/>
<h:message for="email"/>
<h:outputLabel for="lastname1" value="Last Name: " />
<h:outputText value="#{jobApplicant.value}" />
<h:message for="lastname1"/>
<h:outputLabel for="subject" value="Subject: " />
<ice:inputText id="subject" value="#{jobApplicant.subject}"></ice:inputText>
<h:message for="subject"/>
<h:outputLabel for="body" value="Body: " />
<ice:inputRichText id="resume" saveOnSubmit="true" toolbar="Default" width="500" height="200" value="#{jobApplicant.resume}"></ice:inputRichText>
<h:message for="body"/>
<h:commandButton value="Submit: Applicant" action="#{applicationController.addApplicant}" />
<h:commandButton id="clearButton" value="Clear" >
<f:ajax event="click" render="@form" listener="#{applicationController.clearForm}" immediate="true"/>
</h:commandButton>
<h:commandButton id="cancelButton" action="cancelJobApplication" immediate="true" value="Cancel" />
</h:panelGrid>
</h:form>
</ui:define>
<ui:define name="footer">
<br />
- Server - <br />
Title: <h:outputText value="#{jobApplicant.title}" /> <br />
First Name: <h:outputText value="#{jobApplicant.firstName}" /> <br />
Last Name: <h:outputText value="#{jobApplicant.lastName}" /> <br />
Country: <h:outputText value="#{jobApplicant.country}" /><br />
Salary: <h:outputLabel value="#{jobApplicant.salary}" /><br />
Email: <h:outputLabel value="#{jobApplicant.email}" /><br />
Applicants: <h:outputLabel value="#{applicants.applicantsList}" /><br />
</ui:define>
</ui:composition>
</h:body>
</html>
感謝您的回復，但是當我瀏覽以下書籍時，我認為是正確的。
@PersistenceUnit(unitName="jobApplication")
private EntityManagerFactory emf;
public String getValue() throws NotSupportedException, SystemException {
EntityManager em = emf.createEntityManager();
EmployeesEntity emp = em.find(EmployeesEntity.class, 207);
return emp.getLAST_NAME();
}
但是仍然出現錯誤，這可能是由於JBOSS 7.1運行時庫中使用了JPA2.0 [hibernate]。 以下是我遇到的錯誤，我有什么遺漏嗎
13:34:08,316 SEVERE [javax.enterprise.resource.webcontainer.jsf.application] (http--127.0.0.1-8080-1) Error Rendering View[/job-applicant.xhtml]: java.lang.IllegalStateException: JBAS011048: Failed to construct component instance
at org.jboss.as.ee.component.BasicComponent.constructComponentInstance(BasicComponent.java:163) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
at org.jboss.as.ee.component.BasicComponent.createInstance(BasicComponent.java:95) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
at org.jboss.as.web.deployment.component.WebComponentInstantiator$2.<init>(WebComponentInstantiator.java:96) [jboss-as-web-7.1.0.Final.jar:7.1.0.Final]
at org.jboss.as.web.deployment.component.WebComponentInstantiator.initializeInstance(WebComponentInstantiator.java:94) [jboss-as-web-7.1.0.Final.jar:7.1.0.Final]
at org.jboss.as.web.deployment.WebInjectionContainer.newInstance(WebInjectionContainer.java:86) [jboss-as-web-7.1.0.Final.jar:7.1.0.Final]
at org.jboss.as.web.deployment.jsf.JsfInjectionProvider.invokePostConstruct(JsfInjectionProvider.java:69) [jboss-as-web-7.1.0.Final.jar:7.1.0.Final]
at com.sun.faces.mgbean.BeanBuilder.invokePostConstruct(BeanBuilder.java:223) [jsf-impl-2.1.5-jbossorg-1.jar:2.1.5-SNAPSHOT]
at com.sun.faces.mgbean.BeanBuilder.build(BeanBuilder.java:105) [jsf-impl-2.1.5-jbossorg-1.jar:2.1.5-SNAPSHOT]
at com.sun.faces.mgbean.BeanManager.createAndPush(BeanManager.java:409) [jsf-impl-2.1.5-jbossorg-1.jar:2.1.5-SNAPSHOT]
at com.sun.faces.mgbean.BeanManager.create(BeanManager.java:269) [jsf-impl-2.1.5-jbossorg-1.jar:2.1.5-SNAPSHOT]
at com.sun.faces.el.ManagedBeanELResolver.resolveBean(ManagedBeanELResolver.java:244) [jsf-impl-2.1.5-jbossorg-1.jar:2.1.5-SNAPSHOT]
at com.sun.faces.el.ManagedBeanELResolver.getValue(ManagedBeanELResolver.java:116) [jsf-impl-2.1.5-jbossorg-1.jar:2.1.5-SNAPSHOT]
at com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176) [jsf-impl-2.1.5-jbossorg-1.jar:2.1.5-SNAPSHOT]
at com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203) [jsf-impl-2.1.5-jbossorg-1.jar:2.1.5-SNAPSHOT]
at org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:72) [jbossweb-7.0.10.Final.jar:]
at org.apache.el.parser.AstValue.getValue(AstValue.java:147) [jbossweb-7.0.10.Final.jar:]
at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:189) [jbossweb-7.0.10.Final.jar:]
at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109) [jsf-impl-2.1.5-jbossorg-1.jar:2.1.5-SNAPSHOT]
at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194) [jboss-jsf-api_2.1_spec-2.0.0.Final.jar:2.0.0.Final]
at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:182) [jboss-jsf-api_2.1_spec-2.0.0.Final.jar:2.0.0.Final]
at javax.faces.component.UIOutput.getValue(UIOutput.java:169) [jboss-jsf-api_2.1_spec-2.0.0.Final.jar:2.0.0.Final]
at com.sun.faces.renderkit.html_basic.MenuRenderer.getCurrentSelectedValues(MenuRenderer.java:648) [jsf-impl-2.1.5-jbossorg-1.jar:2.1.5-SNAPSHOT]
at com.sun.faces.renderkit.html_basic.SelectManyCheckboxListRenderer.encodeEnd(SelectManyCheckboxListRenderer.java:122) [jsf-impl-2.1.5-jbossorg-1.jar:2.1.5-SNAPSHOT]
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:875) [jboss-jsf-api_2.1_spec-2.0.0.Final.jar:2.0.0.Final]
at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:312) [jsf-impl-2.1.5-jbossorg-1.jar:2.1.5-SNAPSHOT]
at com.sun.faces.renderkit.html_basic.GridRenderer.renderRow(GridRenderer.java:185) [jsf-impl-2.1.5-jbossorg-1.jar:2.1.5-SNAPSHOT]
at com.sun.faces.renderkit.html_basic.GridRenderer.encodeChildren(GridRenderer.java:129) [jsf-impl-2.1.5-jbossorg-1.jar:2.1.5-SNAPSHOT]
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:845) [jboss-jsf-api_2.1_spec-2.0.0.Final.jar:2.0.0.Final]
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1757) [jboss-jsf-api_2.1_spec-2.0.0.Final.jar:2.0.0.Final]
at javax.faces.render.Renderer.encodeChildren(Renderer.java:168) [jboss-jsf-api_2.1_spec-2.0.0.Final.jar:2.0.0.Final]
at org.icefaces.impl.renderkit.RendererWrapper.encodeChildren(RendererWrapper.java:49) [icefaces.jar:]
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:845) [jboss-jsf-api_2.1_spec-2.0.0.Final.jar:2.0.0.Final]
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1757) [jboss-jsf-api_2.1_spec-2.0.0.Final.jar:2.0.0.Final]
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1760) [jboss-jsf-api_2.1_spec-2.0.0.Final.jar:2.0.0.Final]
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1760) [jboss-jsf-api_2.1_spec-2.0.0.Final.jar:2.0.0.Final]
at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:402) [jsf-impl-2.1.5-jbossorg-1.jar:2.1.5-SNAPSHOT]
at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131) [jsf-impl-2.1.5-jbossorg-1.jar:2.1.5-SNAPSHOT]
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:121) [jsf-impl-2.1.5-jbossorg-1.jar:2.1.5-SNAPSHOT]
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) [jsf-impl-2.1.5-jbossorg-1.jar:2.1.5-SNAPSHOT]
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139) [jsf-impl-2.1.5-jbossorg-1.jar:2.1.5-SNAPSHOT]
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:594) [jboss-jsf-api_2.1_spec-2.0.0.Final.jar:2.0.0.Final]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329) [jbossweb-7.0.10.Final.jar:]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.10.Final.jar:]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [jbossweb-7.0.10.Final.jar:]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) [jbossweb-7.0.10.Final.jar:]
at org.jboss.as.jpa.interceptor.WebNonTxEmCloserValve.invoke(WebNonTxEmCloserValve.java:50) [jboss-as-jpa-7.1.0.Final.jar:7.1.0.Final]
at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:154) [jboss-as-web-7.1.0.Final.jar:7.1.0.Final]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155) [jbossweb-7.0.10.Final.jar:]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [jbossweb-7.0.10.Final.jar:]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [jbossweb-7.0.10.Final.jar:]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368) [jbossweb-7.0.10.Final.jar:]
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [jbossweb-7.0.10.Final.jar:]
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671) [jbossweb-7.0.10.Final.jar:]
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930) [jbossweb-7.0.10.Final.jar:]
at java.lang.Thread.run(Unknown Source) [rt.jar:1.6.0_25]
Caused by: javax.persistence.PersistenceException: Hibernate cannot unwrap interface javax.persistence.EntityManagerFactory
at org.hibernate.ejb.AbstractEntityManagerImpl.unwrap(AbstractEntityManagerImpl.java:1173) [hibernate-entitymanager-4.0.1.Final.jar:4.0.1.Final]
at org.jboss.as.jpa.container.AbstractEntityManager.unwrap(AbstractEntityManager.java:68) [jboss-as-jpa-7.1.0.Final.jar:7.1.0.Final]
at org.jboss.as.jpa.injectors.PersistenceContextInjectionSource$PersistenceContextJndiInjectable.getReference(PersistenceContextInjectionSource.java:188) [jboss-as-jpa-7.1.0.Final.jar:7.1.0.Final]
at org.jboss.as.ee.component.ManagedReferenceFieldInjectionInterceptorFactory$ManagedReferenceFieldInjectionInterceptor.processInvocation(ManagedReferenceFieldInjectionInterceptorFactory.java:104) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
at org.jboss.invocation.WeavedInterceptor.processInvocation(WeavedInterceptor.java:53) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
at org.jboss.as.ee.component.ManagedReferenceInterceptorFactory$ManagedReferenceInterceptor.processInvocation(ManagedReferenceInterceptorFactory.java:106) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
at org.jboss.invocation.WeavedInterceptor.processInvocation(WeavedInterceptor.java:53) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
at org.jboss.as.ee.component.TCCLInterceptor.processInvocation(TCCLInterceptor.java:45) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
at org.jboss.as.ee.component.BasicComponent.constructComponentInstance(BasicComponent.java:161) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
... 54 more
1 個解決方案
解決方案1
0 已采納 2012-05-27 16:48:43
代替
@PersistenceUnit(unitName="jobApplication")
private EntityManagerFactory emf;
public String getValue() throws NotSupportedException, SystemException {
EntityManagerFactory emf = Persistence.createEntityManagerFactory("jobApplication");
EntityManager em = emf.createEntityManager();
EmployeesEntity emp = em.find(EmployeesEntity.class, 207);
return emp.getLAST_NAME();
}
您可以嘗試：
@PersistenceContext
private EntityManager em;
public String getValue() throws NotSupportedException, SystemException {
EmployeesEntity emp = em.find(EmployeesEntity.class, 207);
return emp.getLAST_NAME();
}
我不知道這是否有幫助，但是這種方式的代碼更加簡潔:)
我應該在EJB 3.1，JSF2.0和JPA中使用Bean Validation嗎？
[英]Should I use Bean Validation with EJB 3.1, JSF2.0 and JPA?
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