Problems loading EntityManager in
wachtda Feb 11, 2008 11:09 AMHello together!
I'm trying to get the "Store your message in a database" example from the blog of Pete Muir working...
I noticed, that I have some problems with the EntityManger,
the EntityManager is always null!
Some hints?
Thanks Daniel
File: persistence.xml
<persistence> <persistence-unit name="maxcontrol"> <provider>org.hibernate.ejb.HibernatePersistence</provider> <jta-data-source>java:/maxcontrolDatasource</jta-data-source> <properties> <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/> <property name="hibernate.transaction.manager_lookup_class" value="org.hibernate.transaction.JBossTransactionManagerLookup"/> <property name="hibernate.transaction.flush_before_completion" value="true"/> <property name="hibernate.hbm2ddl.auto" value="create-drop"/> <property name="hibernate.show_sql" value="true"/> <property name="jboss.entity.manager.factory.jndi.name" value="java:/maxcontrolEntityManagerFactory" /> </properties> </persistence-unit> </persistence>
File: components.xml
<?xml version="1.0" encoding="UTF-8"?> <components xmlns="http://jboss.com/products/seam/components" xmlns:core="http://jboss.com/products/seam/core" xmlns:persistence="http://jboss.com/products/seam/persistence" xmlns:security="http://jboss.com/products/seam/security" xmlns:async="http://jboss.com/products/seam/async" xmlns:mail="http://jboss.com/products/seam/mail" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation= "http://jboss.com/products/seam/core http://jboss.com/products/seam/core-2.0.xsd http://jboss.com/products/seam/components http://jboss.com/products/seam/components-2.0.xsd http://jboss.com/products/seam/persistence http://jboss.com/products/seam/persistence-2.0.xsd http://jboss.com/products/seam/security http://jboss.com/products/seam/security-2.0.xsd http://jboss.com/products/seam/mail http://jboss.com/products/seam/mail-2.0.xsd"> <core:init jndi-pattern="maxcontrol/#{ejbName}/local" debug="true"/> <core:manager conversation-timeout="120000"/> <persistence:managed-persistence-context name="entityManager" auto-create="true" persistence-unit-jndi-name="java:/maxcontrolEntityManagerFactory" /> <!-- Loading Security-Settings --> <security:identity authenticate-method="#{authenticator.authenticate}" /> <!-- Loading Mail-Settings --> <mail:mail-session host="localhost" port="25" debug="true" username="" password=""/> <!-- Loading Quartz-Settings --> <!-- <async:quartz-dispatcher /> --> </components>
File: DatabaseResourceLoader.java
import java.util.Collections; import java.util.Enumeration; import java.util.List; import java.util.Locale; import java.util.ResourceBundle; import javax.persistence.EntityManager; import javax.persistence.NoResultException; import org.jboss.seam.Component; import org.jboss.seam.annotations.Name; import org.jboss.seam.annotations.intercept.BypassInterceptors; import org.jboss.seam.core.ResourceLoader; /** * @author dwachter * @version 1.0 * @created 07-Feb-2008 17:29:18 */ @BypassInterceptors @Name("org.jboss.seam.core.resourceLoader") public class DatabaseResourceLoader extends ResourceLoader { // Redefine how we load a resource bundle public ResourceBundle loadBundle(final String bundleName) { return new ResourceBundle() { public Enumeration<String> getKeys() { Locale locale = org.jboss.seam.core.Locale.instance(); EntityManager entityManager = (EntityManager) Component.getInstance("myEntityManager"); List resources = entityManager.createNamedQuery("keys") .setParameter("bundleName", bundleName) .setParameter("language", locale.getLanguage()) .setParameter("country", locale.getCountry()) .setParameter("variant", locale.getVariant()) .getResultList(); return Collections.enumeration(resources); } protected Object handleGetObject(String key) { Locale locale = org.jboss.seam.core.Locale.instance(); EntityManager entityManager = (EntityManager) Component.getInstance("myEntityManager"); // Check state of Entitymanager if(entityManager == null) { System.out.println("EM IS NULL!"); } else { System.out.println("EM IS NOT NULL!"); } try { return entityManager.createNamedQuery("value") .setParameter("bundleName", bundleName) .setParameter("language", locale.getLanguage()) .setParameter("country", locale.getCountry()) .setParameter("variant", locale.getVariant()) .setParameter("key", key) .getSingleResult(); } catch (NoResultException e) { return null; } } }; } }
Console output:
16:52:39,818 INFO [STDOUT] EM IS NULL! 16:52:39,839 ERROR [SeamPhaseListener] uncaught exception javax.el.ELException: javax.ejb.EJBTransactionRolledbackException at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:333) at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:274) at org.jboss.el.parser.AstMethodSuffix.getValue(AstMethodSuffix.java:59) at org.jboss.el.parser.AstMethodSuffix.invoke(AstMethodSuffix.java:65) at org.jboss.el.parser.AstValue.invoke(AstValue.java:96) at org.jboss.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:276) at org.jboss.seam.core.Expressions$2.invoke(Expressions.java:173) at org.jboss.seam.navigation.Pages.callAction(Pages.java:636) at org.jboss.seam.navigation.Pages.preRender(Pages.java:289) at org.jboss.seam.jsf.SeamPhaseListener.preRenderPage(SeamPhaseListener.java:549) at org.jboss.seam.jsf.SeamPhaseListener.beforeRenderResponse(SeamPhaseListener.java:460) at org.jboss.seam.jsf.SeamPhaseListener.beforeServletPhase(SeamPhaseListener.java:144) at org.jboss.seam.jsf.SeamPhaseListener.beforePhase(SeamPhaseListener.java:114) at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:222) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:307) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83) at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:68) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:85) at org.jboss.seam.servlet.SeamFilter$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.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:141) at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281) at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262) at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:856) at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:566) at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1508) at java.lang.Thread.run(Thread.java:595) Caused by: javax.ejb.EJBTransactionRolledbackException at org.jboss.ejb3.tx.Ejb3TxPolicy.handleInCallerTx(Ejb3TxPolicy.java:87) at org.jboss.aspects.tx.TxPolicy.invokeInCallerTx(TxPolicy.java:130) at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:195) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:95) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:62) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:77) at org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3AuthenticationInterceptor.java:110) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:46) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.ejb3.stateless.StatelessContainer.localInvoke(StatelessContainer.java:240) at org.jboss.ejb3.stateless.StatelessContainer.localInvoke(StatelessContainer.java:210) at org.jboss.ejb3.stateless.StatelessLocalProxy.invoke(StatelessLocalProxy.java:84) at $Proxy661.testLocale(Unknown Source) 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:585) at org.jboss.seam.util.Reflections.invoke(Reflections.java:21) at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:31) at org.jboss.seam.intercept.ClientSideInterceptor$1.proceed(ClientSideInterceptor.java:76) at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:56) at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:107) at org.jboss.seam.intercept.ClientSideInterceptor.invoke(ClientSideInterceptor.java:54) at org.javassist.tmp.java.lang.Object_$$_javassist_1.testLocale(Object_$$_javassist_1.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:585) at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:329) ... 55 more Caused by: java.lang.NullPointerException at com.solarmax.maxcontrol.action.auth.DatabaseResourceLoader$1.handleGetObject(DatabaseResourceLoader.java:54) at java.util.ResourceBundle.getObject(ResourceBundle.java:319) at org.jboss.seam.core.SeamResourceBundle.handleGetObject(SeamResourceBundle.java:108) at java.util.ResourceBundle.getObject(ResourceBundle.java:319) at java.util.ResourceBundle.getString(ResourceBundle.java:285) at org.jboss.seam.international.Messages$1.get(Messages.java:60) at org.jboss.seam.international.Messages$1.get(Messages.java:102) at javax.el.MapELResolver.getValue(MapELResolver.java:51) at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:53) at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:64) at org.jboss.el.parser.AstBracketSuffix.getValue(AstBracketSuffix.java:59) at org.jboss.el.parser.AstValue.getValue(AstValue.java:67) at org.jboss.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186) at org.jboss.seam.core.Expressions$1.getValue(Expressions.java:111) at org.jboss.seam.Component.getValueToInject(Component.java:2125) at org.jboss.seam.Component.injectAttributes(Component.java:1598) at org.jboss.seam.Component.inject(Component.java:1416) at org.jboss.seam.core.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:45) at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68) at org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:42) at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68) at org.jboss.seam.persistence.EntityManagerProxyInterceptor.aroundInvoke(EntityManagerProxyInterceptor.java:26) at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68) at org.jboss.seam.persistence.HibernateSessionProxyInterceptor.aroundInvoke(HibernateSessionProxyInterceptor.java:27) 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.SessionBeanInterceptor.aroundInvoke(SessionBeanInterceptor.java:50) 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:585) at org.jboss.ejb3.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:118) at org.jboss.ejb3.interceptor.EJB3InterceptorsInterceptor.invoke(EJB3InterceptorsInterceptor.java:63) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityManagerInterceptor.java:54) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.aspects.tx.TxPolicy.invokeInCallerTx(TxPolicy.java:126) ... 88 more