I am fairly new to all of this hibernate, and annotations etc...
the entity manager is not getting injected. It is always null. Any help would be great, as well as why it is wrong. Thanks


I am using the following:
java jdk 1.6.0_23
eclipse helios
Hibernate 3
jsf 2.0 and icefaces
tomcat v6 server
derby database

Here is the code:

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
<display-name>Lohf</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>/faces/*</url-pattern>
<url-pattern>*.xhtml</url-pattern>
</servlet-mapping>
<context-param>
<param-name>javax.faces.STATE_SAVING_METHOD</param-name>
<param-value>server</param-value>
</context-param>
<context-param>
<description>Google Maps API key is required if gMap component is used. Sign up for an API key from http://code.google.com/apis/maps/signup.html</description>
<param-name>com.icesoft.faces.gmapKey</param-name>
<param-value>ABQIAAAADlu0ZiSTam64EKaCQr9eTRTOTuQNzJNXRlYRLknj4cQ89tFfpxTEqxQnVWL4k55OPICgF5_SOZE06A</param-value>
</context-param>
<servlet>
<servlet-name>Resource Servlet</servlet-name>
<servlet-class>com.icesoft.faces.webapp.CompatResourceServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Resource Servlet</servlet-name>
<url-pattern>/xmlhttp/*</url-pattern>
</servlet-mapping>
</web-app>


persistence.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence 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/ ... ce_2_0.xsd"
version="2.0">

<persistence-unit name="lohf">
<provider>org.hibernate.ejb.HibernatePersistence</provider>

<properties>
<!-- <property name="hibernate.ejb.cfgfile" value="/hibernate.cfg.xml"/>
<property name="hibernate.hbm2ddl.auto" value="create"/> -->
<property name="hibernate.archive.autodetection" value="class, hbm" />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.connection.driver_class" value="org.apache.derby.jdbc.EmbeddedDriver" />
<property name="hibernate.connection.url" value="jdbc:derby:/test;create=true" />
<property name="hibernate.dialect" value="org.hibernate.dialect.DerbyDialect" />
<property name="hibernate.c3p0.min_size" value="5" />
<property name="hibernate.c3p0.max_size" value="20" />
<property name="hibernate.c3p0.timeout" value="300" />
<property name="hibernate.c3p0.max_statements" value="50" />
<property name="hibernate.c3p0.idle_test_period" value="3000" />
</properties>
</persistence-unit>
</persistence>

faces-config.xml

<?xml version="1.0" encoding="UTF-8"?>

<faces-config 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-f ... ig_2_0.xsd"
version="2.0">



<managed-bean>
<managed-bean-name>navigationDAO</managed-bean-name>
<managed-bean-class>com.dao.NavigationDAO</managed-bean-class>
<managed-bean-scope>session</managed-bean-scope>
</managed-bean>

<managed-bean>
<managed-bean-name>navigationBean</managed-bean-name>
<managed-bean-class>com.beans.NavigationBean</managed-bean-class>
<managed-bean-scope>session</managed-bean-scope>
<managed-property>
<property-name>navigationDAO</property-name>
<property-class>com.dao.NavigationDAO</property-class>
<value>#{navigationDAO}</value>
</managed-property>
</managed-bean>
</faces-config>

DAO


package com.dao;

import java.util.ArrayList;
import java.util.List;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import com.entity.LohfMenuItem;

public class NavigationDAO {

private EntityManager entityManager;

@SuppressWarnings("unchecked")
public List<LohfMenuItem> getMenuItems()
{
List<LohfMenuItem> menuItems = new ArrayList<LohfMenuItem>();
***getting null pointer here --> menuItems = (List<LohfMenuItem>)entityManager.createQuery("from LOHF.MENUITEMS").getResultList();
return menuItems;
}

@PersistenceContext
public void setEntityManager(EntityManager entityManager) {
this.entityManager = entityManager;
}
}

Method in the Bean that is called

@Transactional
public List<LohfMenuItem> getMenuItems() {

menuItems = navigationDAO.getMenuItems();
return menuItems;
}

* note i have tried with and without the @Transactional tag

here is the list of jar files in my web/lib folder, i have a lot because through trying to find solutions i keep adding jars that i see others have. On a side note if anyone knows which jars i don't need I can remove them.

ant-contrib-1.0b2.jar
ant-junit-1.6.5.jar
antlr.jar
antlr-2.7.6.jar
asm.jar
asm-attrs.jar
c3p0-0.9.1.jar
cglib-2.2.jar
commons-beanutils.jar
commons-collections.jar
commons-collections-3.1.jar
commons-digester.jar
commons-logging.jar
dom4j.jar
dom4j-1.6.1.jar
ehcache-1.5.0.jar
ejb3-persistence.jar
hibernate3.jar
hibernate-annotations.jar
hibernate-commons-annotations.jar
hibernate-core.jar
hibernate-jpa-2.0-api-1.0.0.Final.jar
hibernate-testing.jar
icefaces.jar
infinispan-core-4.2.1.CR1.jar
ivy-1.4.1.jar
javassist.jar
javassist-3.12.0.GA.jar
jbosscache-core-3.2.1.GA.jar
jsf-api.jar
jsf-impl.jar
jstl.jar
jta.jar
jta-1.1.jar
junit.jar
junit-3.8.1.jar
krysalis-jCharts-1.0.0-alpha-1.jar
log4j.jar
maven-ant-tasks.jar
org.springframework.core-3.1.0.M1.jar
org.springframework.core-sources-3.1.0.M1.jar
org.springframework.jdbc-3.1.0.M1.jar
org.springframework.jdbc-sources-3.1.0.M1.jar
org.springframework.transaction-3.1.0.M1.jar
oscache-2.1.jar
proxool-0.8.3.jar
slf4j-api.jar
slf4j-api-1.6.1.jar
slf4j-log4j12.jar
swarmcache-1.0RC2.jar

This is a question for the Hibernate Use Forum. I recommend you redefine your question though. Have you check the log. Is there hibernate output? Does Hibernate bootstrap? Is there an exception?

--Hardy

Ok, I added my post under Hibernate Users.