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POSeam 2.2 with jboss 5 non ejb can't inject entityManager
 

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  1. POSeam 2.2 with jboss 5 non ejb can't inject entityManager
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    <p>ETA an explanation of what this is supposed to do. An employee has to keep track of 2 weeks worth of activities.</p> <p>Each week(tqiActivitySheetActionBean) contains 7 days (tqiDayActionBean).</p> <p>Each day contains tasks for that day(tqiTasks)</p> <p>Tasks are displayed one week at a time(so the employee can switch between this week and last week).</p> <p>What I did was use an enum to iterate over the week - creates a dataTable of tqiActivitySheetActionBeans and iterate over those in a nested dataTable.</p> <p>The employee needs to be able to add, delete and edit tasks for each day in place(in the dataTable). I wrapped the tqiTasks in the tqiDayActionBean to group them.</p> <p>I posted this over at the Seam website, but I'm not getting any bites, I've tried everything I know and some stuff I don't to get this working, but so far no joy. There's configuration information for Jboss 5 using EJB's, Jboss 4 without. I have an exploded WAR using Jboss 5 and Seam 2.2.0, and no EJB's. I cannot inject an entityManager into my action POJOs. I tried removing the persistence-unit-ref-name reference from web.xml, added and removed </p> <pre><code>&lt;transaction:entity-transaction /&gt; &lt;transaction:ejb-transaction /&gt; </code></pre> <p>tags from components.xml (with and without entity-manager="#{entityManager}") . The app won't load when I use either of these. Used the default values and hardcoded them one at a time. I still can't get this to work. I'm currently using this configuration:</p> <p>persistence.xml:</p> <pre><code>&lt;persistence-unit name="myEmployee" transaction-type="JTA"&gt; &lt;provider&gt;org.hibernate.ejb.HibernatePersistence&lt;/provider&gt; &lt;jta-data-source&gt;java:/myEmployeeDatasource&lt;/jta-data-source&gt; &lt;properties&gt; &lt;property name="hibernate.dialect" value="org.hibernate.dialect.OracleDialect"/&gt; &lt;property name="hibernate.hbm2ddl.auto" value="validate"/&gt; &lt;property name="hibernate.show_sql" value="true"/&gt; &lt;property name="hibernate.format_sql" value="true"/&gt; &lt;property name="hibernate.default_schema" value="MY_PROD"/&gt; &lt;!-- Only relevant if Seam is loading the persistence unit (Java SE bootstrap) --&gt; &lt;property name="hibernate.transaction.manager_lookup_class" value="org.hibernate.transaction.JBossTransactionManagerLookup"/&gt; &lt;!-- this binds emf to jndi under java namespace - but only for jboss prior to 5.0 - I shouldn't need this. --&gt; &lt;property name="jboss.entity.manager.factory.jndi.name" value="java:/EntityManagerFactories/myEmployee"/&gt; &lt;/properties&gt; &lt;/persistence-unit&gt; </code></pre> <p>components.xml:</p> <pre><code>&lt;persistence:managed-persistence-context name="entityManager" persistence-unit-jndi-name="java:/EntityManagerFactories/myEmployee" auto-create="true"/&gt; </code></pre> <p>This deploys and starts correctly, but entityManager is still null. </p> <p>I have a bunch of EntityHome classes in the same package, these can use an entityManager with no problem. All the docs I've looked at state that I should be able to inject an entityManager, I've followed the configuration info from the Seam docs page, the Seam in Action book and the Seam wiki for JBoss 5 (<a href="http://code.google.com/p/seaminaction/wiki/DeployingToJBossAS5" rel="nofollow">Seam wiki</a>)</p> <p>I've set breakpoints in the ManagedPersistence class - where it looks like I have an entityManager right up to the time I want to use it, added @Transactional annotations to the class and method. Still nothing. I can get an EM using </p> <pre><code>(EntityManager)Component.getInstance("entityManager") </code></pre> <p>But then I have no transactional access to the underlying entityBean and end up with hibernate LazyInitializationExceptions. I've been using Seam for almost a year now and I have yet to get this to work. Up til now using the Component method has worked, but There must be something fundamentally wrong with our setup that I cannot get injection to work. I'd appreciate any help.</p> <p>ETA code for user classes.</p> <p>The entity class is TQITask. TQIDayActionBean class is supposed to handle the CRUD for a group of TQITasks for one day, TQIActivitySheetActionBean handles the TQIDayActionBeans for one week.</p> <p>entity bean:</p> <pre><code>@Entity @Table(name = "TQI_TASK") @Name("tqitask") public class TqiTask implements java.io.Serializable { static Logger log = Logger.getLogger(TqiTask.class); private Integer sysid; private TqiActivitySubtype tqiActivitySubtype; private TqiActivityType tqiActivityType; // ... more fields, getters and setters </code></pre> <p>dayActionBean(a days tasks):</p> <pre><code>@Name("tQIDayActionBean") @Transactional(TransactionPropagationType.REQUIRED) //this is latest attempt @Scope(ScopeType.CONVERSATION) public class TQIDayActionBean implements Serializable { static Logger log = Logger.getLogger(TQIDayActionBean.class); @In(required=true) EntityManager entityManager; //this doesn't work either @DataModel("tqiTasksForOneDay") @Out(required = false) private List&lt;TqiTask&gt; tqiTasksForOneDay; // .... more stuff // method that should get an entityManager /** * tasks are children of tqiActivitySheet, info we need is in tqiActivitySheetV, so use peopleSoftIdSelected and weekSelected.weekSysid * to get the tqiActivitySheet sysid needed to load the right tasks * TODO for now lets just get it straight from the db */ @SuppressWarnings("unchecked") @Begin(flushMode=FlushModeType.MANUAL) public void generateTasksForDayOfWeek() { log.debug("date to search for: " + this.tqiTaskDate); this.tqiTasksForOneDay = this.entityManager.createQuery("SELECT t from TqiTask t where t.workDate = ?1 AND t.activitySheetSysid = ?2 order by t.sysid") .setParameter(1, this.tqiTaskDate).setParameter(2, this.activitySheetSysid).getResultList(); } getter/setters etc ... </code></pre> <p>activitySheetActionBean(a week's dayActionBeans):</p> <pre><code>/** * handle the activity sheet weekly code generation here */ @Name("tqiActivitySheetActionBean") public class TQIActivitySheetActionBean implements Serializable{ static Logger log = Logger.getLogger(TQIActivitySheetActionBean.class); // tried it here first // @In // EntityManager entityManager; @Out(value="tqiDayActionBeansForTheWeek", required=false) List&lt;TQIDayActionBean&gt; tqiDayActionBeansForTheWeek; // List&lt;DaysOfTheWeek&gt; daysOfTheWeekEnum; private BigDecimal currentlySelectedWeekActivitySheetSysid; @PostConstruct public void init(){ log.debug("calling init"); this.tqiDayActionBeansForTheWeek = new ArrayList&lt;TQIDayActionBean&gt;(); this.updateDataWhenWeekChanges(); } getters/setters more stuff .... </code></pre>
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    1. USgebuh
    1. USgebuh
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    1. COPlease, post the code of the class where you get entityManager injected as null and how you use this class.
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      1. USStefano Travelli
    2. COdone, I thought maybe the "new" tqiDayActionBean in init was causing the problem, but I can't inject that either.
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      1. USgebuh
    3. CODo you have any other components where the injection of the entity manager worked? How do you call the `TQIActivitySheetActionBean`? Have you tried `@In(create=true)`?
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      1. USkraftan
 

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