Re: [Resin-interest] How to make this simplest CanDI work ?

[smallufo]

After a whole day work (but in vain) , I modified my code :

I take off all hibernate-related settings/libraries from persistence.xml and
maven dependencies , I just want to first use resin's Amber to test whether
CanDI works...

This is database settings in resin-web.xml :

  <database jndi-name="jdbc/mining">
    <driver type="com.mysql.jdbc.Driver">

 <url>jdbc:mysql://db/mining?useUnicode=true&amp;characterEncoding=UTF8</url>
      <user>adm</user>
      <password>pwd</password>
    </driver>
    <max-connections>100</max-connections>
  </database>


This is persistence.xml :

<persistence xmlns="http://java.sun.com/xml/ns/persistence"; version="1.0">
  <persistence-unit name="mining" transaction-type="RESOURCE_LOCAL">
    <non-jta-data-source>jdbc/mining</non-jta-data-source>
    <class>foo.Person</class>
    </properties>
  </persistence-unit>
</persistence>

When resin inits , I can see Amber successfully get the connection , and
build the connection pool (ManagedPoolItem) .

But I still cannot get PersonDao's implementation , it seems resin cannot
successfully create the PersistenceContext , here is the FINER log dump :



WebApp[http://test.smallufo.com/testapp-1] map (uri:/hello -> hello)
Dispatch '/hello' to AccessLogFilterChain[http://test.smallufo.com/testapp-1,
next=WebAppFilterChain[http://test.smallufo.com/testapp-1,
next=ServletFilterChain[hello]]]
com.caucho.config.ConfigException: foo.HelloServlet.personDao:
foo.PersonDaoImpl.entityManager java.lang.NullPointerException
      at com.caucho.config.ConfigException.create(ConfigException.java:99)
      at com.caucho.config.ConfigException.create(ConfigException.java:125)
      at
com.caucho.config.inject.InjectionTargetImpl$FieldInjectProgram.inject(InjectionTargetImpl.java:811)
      at
com.caucho.config.inject.InjectionTargetImpl.inject(InjectionTargetImpl.java:266)
      at
com.caucho.server.dispatch.ServletConfigImpl.createServletImpl(ServletConfigImpl.java:1260)
      at
com.caucho.server.dispatch.ServletConfigImpl.createServlet(ServletConfigImpl.java:1142)
      at
com.caucho.server.dispatch.ServletFilterChain.doFilter(ServletFilterChain.java:98)
      at
com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:183)
      at
com.caucho.server.webapp.AccessLogFilterChain.doFilter(AccessLogFilterChain.java:103)
      at
com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:286)
      at
com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:775)
      at
com.caucho.server.connection.TcpConnection.dispatchRequest(TcpConnection.java:600)
      at
com.caucho.server.connection.TcpConnection.handleRequestsImpl(TcpConnection.java:566)
      at
com.caucho.server.connection.TcpConnection.handleRequests(TcpConnection.java:519)
      at
com.caucho.server.connection.TcpConnection$AcceptTask.doTask(TcpConnection.java:1100)
      at
com.caucho.server.connection.TcpConnection$ConnectionReadTask.runThread(TcpConnection.java:1037)
      at
com.caucho.server.connection.TcpConnection$AcceptTask.run(TcpConnection.java:1068)
      at com.caucho.util.ThreadPool$PoolThread.runTasks(ThreadPool.java:901)
      at com.caucho.util.ThreadPool$PoolThread.run(ThreadPool.java:866)
Caused by: com.caucho.config.ConfigException:
foo.PersonDaoImpl.entityManager java.lang.NullPointerException
      at com.caucho.config.ConfigException.create(ConfigException.java:102)
      at
com.caucho.config.j2ee.PersistenceContextGenerator.create(PersistenceContextGenerator.java:121)
      at
com.caucho.config.program.FieldGeneratorProgram.inject(FieldGeneratorProgram.java:84)
      at
com.caucho.config.inject.InjectionTargetImpl$FieldHandlerProgram.inject(InjectionTargetImpl.java:860)
      at
com.caucho.config.inject.InjectionTargetImpl.inject(InjectionTargetImpl.java:266)
      at
com.caucho.config.inject.ManagedBeanImpl.create(ManagedBeanImpl.java:149)
      at
com.caucho.config.inject.InjectManager.getInstanceRec(InjectManager.java:1347)
      at
com.caucho.config.inject.InjectManager.getReference(InjectManager.java:1311)
      at
com.caucho.config.inject.InjectManager.getInjectableReference(InjectManager.java:1509)
      at
com.caucho.config.inject.InjectionTargetImpl$FieldInjectProgram.inject(InjectionTargetImpl.java:807)
      ... 16 more
Caused by: java.lang.NullPointerException
      at
com.caucho.config.inject.InjectManager.getInstanceRec(InjectManager.java:1337)
      at
com.caucho.config.inject.InjectManager.getReference(InjectManager.java:1311)
      at
com.caucho.config.j2ee.WebBeanGenerator.create(WebBeanGenerator.java:66)
      at
com.caucho.config.j2ee.PersistenceContextGenerator.create(PersistenceContextGenerator.java:108)
      ... 24 more
Http[5] HTTP/1.1 500 Internal Server Error


I've stuck with this problem for days , but cannot find an answer ...
I'm very appreciated if somebody helps me... thanks.

I am using Resin (non-Pro) 4.0.5

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