org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: org.openxava.laoficina.model.Collective.cmembers, no session or session was closed

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    org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: org.openxava.laoficina.model.Collective.cmembers, no session or session was closed
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    javax.persistence.PersistenceException: org.hibernate.LazyInitializationException: failed to lazily initialize a collection, no session or session was closed

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Root Cause Analysis

  1. org.hibernate.LazyInitializationException

    failed to lazily initialize a collection of role: org.openxava.laoficina.model.Collective.cmembers, no session or session was closed

    at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException()
  2. Hibernate
    PersistentSet.size
    1. org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:383)
    2. org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:375)
    3. org.hibernate.collection.AbstractPersistentCollection.readSize(AbstractPersistentCollection.java:122)
    4. org.hibernate.collection.PersistentSet.size(PersistentSet.java:162)
    4 frames
  3. org.openxava.laoficina
    CollectiveMembersServlet.doGet
    1. org.openxava.laoficina.servlets.CollectiveMembersServlet.doGet(CollectiveMembersServlet.java:34)
    1 frame
  4. JavaServlet
    HttpServlet.service
    1. javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
    2. javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
    2 frames
  5. Glassfish Core
    ApplicationFilterChain.doFilter
    1. org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
    2. org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    2 frames
  6. Tomcat WS
    WsFilter.doFilter
    1. org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    1 frame
  7. Glassfish Core
    CoyoteAdapter.service
    1. org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
    2. org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    3. org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
    4. org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
    5. org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
    6. org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
    7. org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
    8. org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
    9. org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    10. org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:409)
    10 frames
  8. Grizzly HTTP
    JIoEndpoint$SocketProcessor.run
    1. org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1044)
    2. org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
    3. org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:315)
    3 frames
  9. Java RT
    Thread.run
    1. java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    2. java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    3. java.lang.Thread.run(Unknown Source)
    3 frames