Should I deploy ear or war?
2009/10/23 Roan Brasil Monteiro <roanbrasil_at_gmail.com>
> Follow up the code. P.S. -> If I use the @PersistenceUnit or
> @PersistenceContext on my Resource Class I got the result,
> NullPointerException is occurring in this situation I am trying to use EJB.
> Do you need persistence.xml or web.xml?
>
> Interface BaseDAO
>
> *package com.citespace.citespacerest.dao;
>
> import java.util.List;
>
> import javax.ejb.Local;
> import javax.ejb.Remote;
> import javax.persistence.EntityExistsException;
> import javax.persistence.TransactionRequiredException;
>
> @Remote
> public interface BaseDAO<T> {
> public List<T> listCountry();
> }*
>
> -------------------------------8<-----------BaseDAOImpl
> Class--------------8<-------------------------------8<-----------------------------------------------------
>
> *package com.citespace.citespacerest.dao.impl;
>
>
> import java.util.List;
>
> import javax.ejb.Stateless;
> import javax.ejb.TransactionAttribute;
> import javax.ejb.TransactionAttributeType;
> import javax.persistence.EntityManager;
> import javax.persistence.EntityManagerFactory;
> import javax.persistence.PersistenceUnit;
> import javax.persistence.Query;
>
> import com.citespace.citespacerest.dao.BaseDAO;
> import com.citespace.cms.model.Country;
>
> @Stateless
> public class BaseDAOImpl<T> implements BaseDAO<T>{
>
>
> @PersistenceUnit(unitName = "citespacePU")
> public EntityManagerFactory emf;
>
> @TransactionAttribute(TransactionAttributeType.NOT_SUPPORTED)
> public List<T> listCountry(){
>
> EntityManager em = emf.createEntityManager();
> try{
> Query q = em.createQuery("Select c from Country c ");
> List<Country> c = q.getResultList();
> return (List<T>) c;
> }finally{
> if (em != null && em.isOpen()) {
> em.close();
> }
> }
>
> }
> }
> *
>
> -------------------------------8<----------------Resource
> Class------------------8<-------------------------------8<-----------------------------------------------------
>
> *package com.citespace.citespacerest;
>
> import java.util.List;
>
> import javax.persistence.EntityManagerFactory;
> import javax.persistence.PersistenceUnit;
> import javax.ws.rs.GET;
> import javax.ws.rs.Path;
> import javax.ws.rs.Produces;
>
>
> import com.citespace.citespacerest.dao.impl.BaseDAOImpl;
> import com.citespace.cms.model.Country;
>
> @Path("/user/")
> public class UserResource {
>
> @GET
> @Produces("text/plain")
> public String registerUser(){
>
> BaseDAOImpl<Country> countryDAO = new BaseDAOImpl<Country>();
> List<Country> c = countryDAO.listCountry();
> String y = "";
> for(Country x: c){
> y = y + ":" +x.getName();
> }
>
> return "[Lista de Países]:"+y;
> }
>
> }*
>
>
>
> 2009/10/23 Eve Pokua <gorgeous65_at_msn.com>
>
>> Roan
>>
>>
>> I am trying to catch up.
>>
>> Please, send us
>>
>> a the code of your remote, interface
>>
>> then imple stateless bean class
>>
>> Then the servlet.
>>
>> Then I will following it up for you.
>>
>> Are you accessing your data from DB?
>>
>> Is it a war or ear at the moment. perhaps somebody maybe able to test it
>> for you if you send some test codes
>>
>> eve
>>
>> ------------------------------
>> Date: Fri, 23 Oct 2009 12:13:20 -0200
>> From: roanbrasil_at_gmail.com
>> To: persistence_at_glassfish.dev.java.net
>> Subject: Re: NullPointerException
>>
>>
>> I have one question, in case I have my web.xml using glassfish + jpa +
>> jersey currently, and I added a ejb.jar i my project, Should I set up
>> something no web.xml as on this injection? I am using Stateless in a class
>> and I have a interface Remote and another one Local. But I keep to getting
>> NullPointerException, I guess is something on web.xml. Can someone give me
>> some help?
>>
>> <?xml version="1.0" encoding="UTF-8"?>
>> <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
>> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>> xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
>> http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
>> <servlet>
>> <servlet-name>Jersey Web Application</servlet-name>
>>
>> <servlet-class>com.sun.jersey.server.impl.container.servlet.ServletAdaptor</servlet-class>
>> <init-param>
>>
>> <param-name>com.sun.jersey.config.feature.Redirect</param-name>
>> <param-value>true</param-value>
>> </init-param>
>> <init-param>
>> <param-name>unit:citespacePU</param-name>
>> <param-value>persistence/citespace</param-value>
>> </init-param>
>> <load-on-startup>1</load-on-startup>
>> </servlet>
>> <servlet-mapping>
>> <servlet-name>Jersey Web Application</servlet-name>
>> <url-pattern>/resources/*</url-pattern>
>> </servlet-mapping>
>> <session-config>
>> <session-timeout>
>> 30
>> </session-timeout>
>> </session-config>
>> <welcome-file-list>
>> <welcome-file>
>> index.jsp
>> </welcome-file>
>> </welcome-file-list>
>> <persistence-unit-ref>
>>
>> <persistence-unit-ref-name>persistence/citespace</persistence-unit-ref-name>
>> <persistence-unit-name>citespacePU</persistence-unit-name>
>> </persistence-unit-ref>
>> <resource-ref>
>> <res-ref-name>UserTransaction</res-ref-name>
>> <res-type>javax.transaction.UserTransaction</res-type>
>> <res-auth>Container</res-auth>
>> </resource-ref>
>> </web-app>
>>
>>
>>
>>
>>
>> --
>> Atenciosamente,
>>
>> Roan Brasil Monteiro
>> http://roanbrasil.wordpress.com/
>>
>> ------------------------------
>> New Windows 7: Simplify what you do everyday. Find the right PC for you.<http://www.microsoft.com/windows/buy/>
>>
>
>
>
> --
> Atenciosamente,
>
> Roan Brasil Monteiro
> http://roanbrasil.wordpress.com/
>
--
Atenciosamente,
Roan Brasil Monteiro
http://roanbrasil.wordpress.com/