I managed to partially configure the EntityManager Case 1 :
persistence.xml <persistence xmlns="http://java.sun.com/xml/ns/persistence"; version="1.0"> <persistence-unit name="myPersistence" transaction-type="RESOURCE_LOCAL"> <provider> org.apache.openjpa.persistence.PersistenceProviderImpl </provider> <class>test.myClass</class> <properties> <property name="openjpa.ConnectionURL" value="jdbc:oracle:thin:@server:1521:db"/> <property name="openjpa.ConnectionDriverName" value="oracle.jdbc.driver.OracleDriver"/> <property name="openjpa.Log" value="DefaultLevel=TRACE,Tool=TRACE"/> </properties> </persistence-unit> </persistence> and ConnectionManager class EntityManagerFactory emf = Persistence.createEntityManagerFactory("myPersistence"); System.out.println("persistence factory setup successfully" + emf); HashMap myProperties = new HashMap(); myProperties.put("openjpa.ConnectionUserName",user); myProperties.put("openjpa.ConnectionPassword",pwd); EntityManager em = emf.createEntityManager(myProperties); this works without problem, I could also persist one of my entity beans. Now when I try to remove Connection URL from persistence.xml and move it to the ConnectionManager class myProperties.put("openjpa.ConnectionURL","jdbc:oracle:thin:@server:1521:db"); it throws an exception saying <4|false|0.9.6-incubating> org.apache.openjpa.persistence.ArgumentException: Missing getter for property "ConnectionURL" in type "class org.apache.openjpa.persistence.EntityManagerImpl". at org.apache.openjpa.util.ImplHelper.getGetter(ImplHelper.java:65) at org.apache.openjpa.util.ImplHelper.getSetter(ImplHelper.java:75) at org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:214) at org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:52) at test.ConnectionManager.doGet(ConnectionManager.java:29) at javax.servlet.http.HttpServlet.service(HttpServlet.java:689) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) at java.lang.Thread.run(Thread.java:595) Caused by: java.lang.NoSuchMethodException: org.apache.openjpa.persistence.EntityManagerImpl.getConnectionURL() at java.lang.Class.getMethod(Class.java:1581) at org.apache.openjpa.util.ImplHelper.getGetter(ImplHelper.java:60) Janap wrote: > > Thx for the replies. So as I understand , I can create > EntityManagerFactory when my server starts by giving it a persistence unit > name and WITHOUT giving it a username and password which are neccessary to > make a DB connection? > > For every user who logs in , i can create an EntityManager by passing the > connection parameters in the map. This EntityManager, I can either keep it > in session per user or create everytime a transaction is needed. > > I will now start making an example and let you know what has happened! > > Janap > > > > Alessandro Ferrucci-3 wrote: >> >> There is no obligatory contract between the EntityManagerFactory and >> whatever container/environment you are in. The EntityManagerFactory >> is...just that..a factory of EntityManagers. Read: >> http://openjpa.apache.org/docs/latest/manual/manual.html#jpa_overview_emfactory_obtainto >> see how to retrieve an EntityManager, you must pass in a Map of >> attributes that your EntityManager will be configured with to talk to the >> DB >> >> >> mainly: >> >> - >> >> openjpa.ConnectionUserName >> - >> >> openjpa.ConnectionPassword >> - >> >> openjpa.ConnectionRetainMode >> - >> >> openjpa.TransactionMode >> - >> >> openjpa.<property>, where *<property> * is any JavaBean property of >> the >> org.apache.openjpa.persistence.OpenJPAEntityManager<http://openjpa.apache.org/docs/latest/javadoc/org/apache/openjpa/persistence/OpenJPAEntityManager.html>. >> >> >> Also of importance is this: >> >> http://openjpa.apache.org/docs/latest/manual/manual.html#jpa_overview_persistence_xml >> >> this tells you how to configure a certain factory in non-EE settings. >> >> >> HTH >> >> Alessandro Ferrucci. >> >> >> > > -- View this message in context: http://www.nabble.com/EntityManagerFactory-configure-tf4547543.html#a12980798 Sent from the OpenJPA Users mailing list archive at Nabble.com.
