zecas zecas [http://community.jboss.org/people/zecas] created the discussion "JBoss : persistence and EntityManager injection" To view the discussion, visit: http://community.jboss.org/message/566354#566354 -------------------------------------------------------------- Hi, I'm starting a small testing project from scratch, but I'm getting some trouble configuring JPA persistence ... I'll post some code fragments and hope someone can enlight me on the issue. I have an EAR, my-ear, and inside there is a single WAR, my-war. All definitions should be placed correctly, since I can make it to pick all settings, even those defined in "persistence.xml". my-war structure C:. |   index.jsp | +---META-INF |       MANIFEST.MF | \---WEB-INF     |   faces-config.xml     |   jboss-web.xml     |   web.xml     |     +---classes     |   +---com     |   |   \---my     |   |       \---package     |   |               SimpleMessage.class     |   |     |   \---META-INF     |           persistence.xml     |     \---lib web.xml <web-app ...>     ...     <resource-ref>         <description>Datasource Connection</description>         <res-ref-name>jdbc/MyDB</res-ref-name>         <res-type>javax.sql.DataSource</res-type>         <res-auth>Container</res-auth>         <res-sharing-scope>Shareable</res-sharing-scope>     </resource-ref> </web-app> jboss-web.xml <jboss-web>     <resource-ref>         <res-ref-name>jdbc/MyDB</res-ref-name>         <jndi-name>java:/ds/MyDB</jndi-name>     </resource-ref> </jboss-web> persistence.xml <persistence version="2.0"     xmlns="http://java.sun.com/xml/ns/persistence"     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">     <persistence-unit name="punit">         <jta-data-source>java:jdbc/MyDB</jta-data-source>     </persistence-unit> </persistence> My Java code has the following class: SimpleMessage.java package com.my.package;   import javax.persistence.PersistenceContext;   public class SimpleMessage {       @PersistenceContext     private EntityManager em;       @PersistenceUnit(name="punit")     private EntityManagerFactory emf;       public void something() {         if( em!=null ) {             System.out.println("EntityManager Available!");         } else {             System.out.println("EntityManager is NULL!");         }         if( emf!=null ) {             System.out.println("EntityManagerFactory Available!");         } else {             System.out.println("EntityManagerFactory is NULL!");         }     } } I intend to test just this ... a simple basic class where I inject the manager instance. The class is not an EJB class, just an basic injected class. When deploying, I get the following result: 2010-10-13 14:09:55,197 INFO [org.jboss.web.tomcat.service.deployers.TomcatDeployment] (HDScanner) deploy, ctxPath=/my-war 2010-10-13 14:09:55,213 ERROR [org.jboss.web.tomcat.service.deployers.TomcatDeployment] (HDScanner) ENC setup failed java.lang.NullPointerException at org.jboss.injection.PersistenceUnitHandler.getManagedEntityManagerFactory(PersistenceUnitHandler.java:149) at org.jboss.injection.PcEncInjector.inject(PcEncInjector.java:76) at org.jboss.web.tomcat.service.TomcatInjectionContainer.populateEnc(TomcatInjectionContainer.java:482) However, if in "persistence.xml" I instead define the datasource reference as "java:ds/MyDB" (datasource name definition on JBoss), I obtain the following result: 2010-10-13 14:15:20,552 INFO  [org.jboss.jpa.deployment.PersistenceUnitDeployment] (HDScanner)  Starting persistence unit  persistence.unit:unitName=my-ear-1.0.0.ear/my-war-1.0.0.war#punit 2010-10-13 14:15:20,552 INFO [org.hibernate.ejb.Ejb3Configuration] (HDScanner) Processing PersistenceUnitInfo [ name: punit ...] 2010-10-13  14:15:20,552 WARN [org.hibernate.ejb.Ejb3Configuration] (HDScanner)  Persistence provider caller does not implement the EJB3 spec correctly.  PersistenceUnitInfo.getNewTempClassLoader() is null. 2010-10-13  14:15:20,568 INFO  [org.hibernate.cfg.search.HibernateSearchEventListenerRegister]  (HDScanner) Unable to find  org.hibernate.search.event.FullTextIndexEventListener on the classpath.  Hibernate Search is not enabled. 2010-10-13 14:15:20,568 INFO  [org.hibernate.connection.ConnectionProviderFactory] (HDScanner)  Initializing connection provider:  org.hibernate.ejb.connection.InjectedDataSourceConnectionProvider 2010-10-13  14:15:20,568 INFO  [org.hibernate.ejb.connection.InjectedDataSourceConnectionProvider]  (HDScanner) Using provided datasource 2010-10-13 14:15:20,568 INFO [org.hibernate.cfg.SettingsFactory] (HDScanner) RDBMS: MySQL, version: 5.1.41-3ubuntu12.6 2010-10-13  14:15:20,568 INFO [org.hibernate.cfg.SettingsFactory] (HDScanner) JDBC  driver: MySQL-AB JDBC Driver, version: mysql-connector-java-5.1.10 (  Revision: ${svn.Revision} ) 2010-10-13 14:15:20,568 INFO [org.hibernate.dialect.Dialect] (HDScanner) Using dialect: org.hibernate.dialect.MySQLDialect 2010-10-13  14:15:20,568 INFO [org.hibernate.transaction.TransactionFactoryFactory]  (HDScanner) Transaction strategy:  org.hibernate.ejb.transaction.JoinableCMTTransactionFactory 2010-10-13  14:15:20,568 INFO  [org.hibernate.transaction.TransactionManagerLookupFactory] (HDScanner)  instantiating TransactionManagerLookup:  org.hibernate.transaction.JBossTransactionManagerLookup 2010-10-13  14:15:20,568 INFO  [org.hibernate.transaction.TransactionManagerLookupFactory] (HDScanner)  instantiated TransactionManagerLookup 2010-10-13 14:15:20,568 INFO [org.hibernate.cfg.SettingsFactory] (HDScanner) Automatic flush during beforeCompletion(): disabled 2010-10-13  14:15:20,568 INFO [org.hibernate.cfg.SettingsFactory] (HDScanner)  Automatic session close at end of transaction: disabled 2010-10-13 14:15:20,568 INFO [org.hibernate.cfg.SettingsFactory] (HDScanner) JDBC batch size: 15 2010-10-13 14:15:20,568 INFO [org.hibernate.cfg.SettingsFactory] (HDScanner) JDBC batch updates for versioned data: disabled 2010-10-13 14:15:20,568 INFO [org.hibernate.cfg.SettingsFactory] (HDScanner) Scrollable result sets: enabled 2010-10-13 14:15:20,568 INFO [org.hibernate.cfg.SettingsFactory] (HDScanner) JDBC3 getGeneratedKeys(): enabled 2010-10-13 14:15:20,568 INFO [org.hibernate.cfg.SettingsFactory] (HDScanner) Connection release mode: auto 2010-10-13 14:15:20,568 INFO [org.hibernate.cfg.SettingsFactory] (HDScanner) Maximum outer join fetch depth: 2 2010-10-13 14:15:20,568 INFO [org.hibernate.cfg.SettingsFactory] (HDScanner) Default batch fetch size: 1 2010-10-13 14:15:20,568 INFO [org.hibernate.cfg.SettingsFactory] (HDScanner) Generate SQL with comments: disabled 2010-10-13 14:15:20,568 INFO [org.hibernate.cfg.SettingsFactory] (HDScanner) Order SQL updates by primary key: disabled 2010-10-13 14:15:20,568 INFO [org.hibernate.cfg.SettingsFactory] (HDScanner) Order SQL inserts for batching: disabled 2010-10-13  14:15:20,568 INFO [org.hibernate.cfg.SettingsFactory] (HDScanner) Query  translator: org.hibernate.hql.ast.ASTQueryTranslatorFactory 2010-10-13 14:15:20,568 INFO [org.hibernate.hql.ast.ASTQueryTranslatorFactory] (HDScanner) Using ASTQueryTranslatorFactory 2010-10-13 14:15:20,568 INFO [org.hibernate.cfg.SettingsFactory] (HDScanner) Query language substitutions: {} 2010-10-13 14:15:20,568 INFO [org.hibernate.cfg.SettingsFactory] (HDScanner) JPA-QL strict compliance: enabled 2010-10-13 14:15:20,568 INFO [org.hibernate.cfg.SettingsFactory] (HDScanner) Second-level cache: enabled 2010-10-13 14:15:20,568 INFO [org.hibernate.cfg.SettingsFactory] (HDScanner) Query cache: disabled 2010-10-13  14:15:20,568 INFO [org.hibernate.cfg.SettingsFactory] (HDScanner) Cache  region factory :  org.hibernate.cache.impl.bridge.RegionFactoryCacheProviderBridge 2010-10-13  14:15:20,568 INFO  [org.hibernate.cache.impl.bridge.RegionFactoryCacheProviderBridge]  (HDScanner) Cache provider: org.hibernate.cache.HashtableCacheProvider 2010-10-13 14:15:20,568 INFO [org.hibernate.cfg.SettingsFactory] (HDScanner) Optimize cache for minimal puts: disabled 2010-10-13  14:15:20,568 INFO [org.hibernate.cfg.SettingsFactory] (HDScanner) Cache  region prefix:  persistence.unit:unitName=my-ear-1.0.0.ear/my-war-1.0.0.war#punit 2010-10-13 14:15:20,568 INFO [org.hibernate.cfg.SettingsFactory] (HDScanner) Structured second-level cache entries: disabled 2010-10-13 14:15:20,568 INFO [org.hibernate.cfg.SettingsFactory] (HDScanner) Statistics: disabled 2010-10-13  14:15:20,568 INFO [org.hibernate.cfg.SettingsFactory] (HDScanner)  Deleted entity synthetic identifier rollback: disabled 2010-10-13 14:15:20,568 INFO [org.hibernate.cfg.SettingsFactory] (HDScanner) Default entity-mode: pojo 2010-10-13 14:15:20,568 INFO [org.hibernate.cfg.SettingsFactory] (HDScanner) Named query checking : enabled 2010-10-13 14:15:20,568 INFO [org.hibernate.impl.SessionFactoryImpl] (HDScanner) building session factory 2010-10-13  14:15:20,568 INFO [org.hibernate.impl.SessionFactoryObjectFactory]  (HDScanner) Factory name:  persistence.unit:unitName=my-ear-1.0.0.ear/my-war-1.0.0.war#punit 2010-10-13  14:15:20,568 INFO [org.hibernate.util.NamingHelper] (HDScanner) JNDI  InitialContext  properties:{java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory,  java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces} 2010-10-13  14:15:20,584 INFO [org.hibernate.impl.SessionFactoryObjectFactory]  (HDScanner) Bound factory to JNDI name:  persistence.unit:unitName=my-ear-1.0.0.ear/my-war-1.0.0.war#punit 2010-10-13  14:15:20,584 WARN [org.hibernate.impl.SessionFactoryObjectFactory]  (HDScanner) InitialContext did not implement EventContext 2010-10-13  14:15:20,584 INFO [org.hibernate.util.NamingHelper] (HDScanner) JNDI  InitialContext  properties:{java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory,  java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces} 2010-10-13 14:15:20,724 INFO [org.jboss.web.tomcat.service.deployers.TomcatDeployment] (HDScanner) deploy, ctxPath=/my-war 2010-10-13  14:15:20,755 INFO [javax.enterprise.resource.webcontainer.jsf.config]  (HDScanner) Initializing Mojarra (1.2_12-b01-FCS) for context '/my-war'  2010-10-13 14:15:20,896 ERROR [STDERR] (HDScanner) SLF4J: Class path contains multiple SLF4J bindings. 2010-10-13  14:15:20,896 ERROR [STDERR] (HDScanner) SLF4J: Found binding in  [vfszip:/C:/Program  Files/Java/jboss-5.1.0.GA/common/lib/slf4j-jboss-logging.jar/org/slf4j/impl/StaticLoggerBinder.class] 2010-10-13  14:15:20,896 ERROR [STDERR] (HDScanner) SLF4J: Found binding in  [vfszip:/C:/Program  Files/Java/jboss-5.1.0.GA/server/default/deploy/my-ear-1.0.0.ear/logback-classic-0.9.20.jar/org/slf4j/impl/StaticLoggerBinder.class] 2010-10-13  14:15:20,912 ERROR [STDERR] (HDScanner) SLF4J: See  http://www.slf4j.org/codes.html#multiple_bindings for an explanation. So my questions are: *1#* After invoking "SimpleMessage.something();" (using the second option "java:ds/MyDB" in "persistence.xml") I receive the following output: EntityManager is NULL! EntityManagerFactory is NULL! So no injection happened ... shouldn't it occur? what happened? *2#* I was assuming that "web.xml" defines the JNDI to be used inside my webapp, then "jboss-web.xml" would map that name into the internall JNDI defined in JBoss. In this case for JBoss usage, if changing to IBM WebSphere I would use another mapping config file. BUT ... I was also assuming that "persistence.xml" would define the JNDI that is defined in "web.xml" ... and not the one defined in application server level ... so I would get an abstraction from whichever server I'll deploy my project into. Shouldn't this be working like that? What am I doing wrong? Any help would be appreciated ... I really need to understand and put this to work ... 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