Sorry, this link is better http://www.nabble.com/Obtaining-EntityManager-programatically-for-test-purposes-td21810387.html#a21883934 http://www.nabble.com/Obtaining-EntityManager-programatically-for-test-purposes-td21810387.html#a21883934
JLouis Jean-Louis MONTEIRO wrote: > > Hi Jon, > > Not sure you can lookup by unit name. > Here is a related post with David's answer. > > > http://www.nabble.com/Obtaining-EntityManager-programatically-for-test-purposes-td21810387.html > http://www.nabble.com/Obtaining-EntityManager-programatically-for-test-purposes-td21810387.html > > > Jean-Louis > > > Jonathan Gallimore-2 wrote: >> >> Hi Chan, >> >> In the latest release I believe you can lookup the EntityManager using >> the >> java:openejb context. For example for the movie-unit persistence unit in >> the >> injection-of-entitymanager sample you could use: >> >> context.lookup("java:openejb/PersistenceUnit/movie-unit"); >> >> to lookup the EntityManagerFactory. I tend to use some code like this to >> dig >> around the java:openejb context to see what goodies are there: >> >> NamingEnumeration list = ctx.listBindings("java:openejb"); >> while (list.hasMore()) { >> Binding item = (Binding) list.next(); >> String className = item.getClassName(); >> String name = item.getName(); >> System.out.println(className + " " + name); >> } >> >> I tried this using an embedded instance of OpenEJB, but I would imagine >> it >> would work in Tomcat as well. >> >> Hope that helps, >> >> Jon >> >> >> >> On Tue, Jul 28, 2009 at 9:44 PM, Chan Kelwin Hillary >> <[email protected]>wrote: >> >>> Hi, >>> I have a stateless EJB Session bean that successfully instantiates the >>> EntityManger using the @PersistenceContext annotation. However, due to >>> an >>> issue, I need to get the EntityManager by lookup instead. I've tried the >>> code below in the stateless session bean but it is giving me the error >>> "Name >>> Persistence is not bound in this Context". I've also placed >>> the eclipselink.jar file into the %TOMCAT%\lib directory. >>> >>> try { >>> Context context = new InitialContext(); >>> em = (javax.persistence.EntityManager) context.lookup("Persistence"); >>> } catch (NamingException e) { >>> System.out.println(e.getExplanation()); >>> } >>> >>> persistence.xml >>> =================== >>> <?xml version="1.0" encoding="windows-1252" ?> >>> <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/persistence_1_0.xsd"; >>> version="1.0" >>> xmlns="http://java.sun.com/xml/ns/persistence";> >>> <persistence-unit name="Persistence"> >>> <provider> >>> org.eclipse.persistence.jpa.PersistenceProvider >>> </provider> >>> <jta-data-source> >>> java:openejb/Connector/Default JDBC Database >>> </jta-data-source> >>> <class> >>> com.testejb.model.ejb.dn.Dept >>> </class> >>> <properties> >>> <property name="eclipselink.target-database" value="Oracle10g"/> >>> </properties> >>> </persistence-unit> >>> </persistence> >>> >>> I am running this on Tomcat-6.0.20 (extracted from the zip file instead >>> of >>> the executable) and the embedded OpenEJB. Can this be done? What am I >>> missing? >>> >>> Thanks. >>> >>> >>> -- >>> Best regards, >>> >>> Chan Kelwin >>> >> >> > > -- View this message in context: http://www.nabble.com/Lookup-EntityManager-from-Stateless-EJB-Session-Bean-tp24708299p24737449.html Sent from the OpenEJB User mailing list archive at Nabble.com.
