JPA genericDao

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Jomar Belen

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Apr 5, 2016, 10:48:51 PM4/5/16

to java-generic-dao

Hi i have been trying to configure my project to use this generic dao but im stuck with this error.

java.lang.NullPointerException

at com.googlecode.genericdao.dao.jpa.JPABaseDAO._searchAndCount(JPABaseDAO.java:394)

my generic dao impl has this code to get my entity manager

@Override

@PersistenceContext

public void setEntityManager(EntityManager entityManager) {

// TODO Auto-generated method stub

super.setEntityManager(entityManager);

}

i tried working with the none JPA one it works, just wondering whats the difference

@Autowired

@Required

@Override

public void setSessionFactory(SessionFactory sessionFactory) {

super.setSessionFactory(sessionFactory);

}

basically the same just want to use the com.googlecode.genericdao.dao.jpa.GenericDAOImpl version

Jomar Belen

unread,

Apr 6, 2016, 3:53:22 AM4/6/16

to java-generic-dao

Well change my code to match the code in the sample provided in svn

i now get

java.lang.NullPointerException

at org.hibernate.internal.SessionFactoryImpl.getClassMetadata(SessionFactoryImpl.java:1261)

at com.googlecode.genericdao.search.hibernate.HibernateMetadataUtil.get(HibernateMetadataUtil.java:92)

at com.googlecode.genericdao.dao.jpa.JPABaseDAO._all(JPABaseDAO.java:206)

at com.googlecode.genericdao.dao.jpa.GenericDAOImpl.findAll(GenericDAOImpl.java:61)

at com.service.impl.ReferenceServiceImpl.getActiveMenuItem(ReferenceServiceImpl.java:31)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:606)

at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:318)

at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)

at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)

at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)

at com.sun.proxy.$Proxy66.getActiveMenuItem(Unknown Source)

at com.slmc.admin.UserMaintenanceController.doGet(UserMaintenanceController.java:63)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:606)

at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:213)

at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126)

at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96)

at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617)

at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578)

at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)

at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)

at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)

at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)

at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:735)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)

at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684)

at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1496)

at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)

at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)

at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)

at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1484)

at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:311)

at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:116)

at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)