spring - Injecting JPA's Entity Manager in Hibernate's EmptyInterceptor -

i using jpa-2.0 hibernate in data access layer.

for audit logging purposes, using hibernate's emptyinterceptor configuring below property in persistence.xml:

<property name="hibernate.ejb.interceptor"                   value="com.mycom.audit.auditloginterceptor" />  

where auditloginterceptor extends hibernate's 'org.hibernate.emptyinterceptor'.

public class auditloginterceptor extends emptyinterceptor {        private long userid;        public auditloginterceptor() {}        @override       public boolean onsave(object entity, serializable id, object[] state,               string[] propertynames, type[] types) throws callbackexception {           // need perform database operations using jpa entity manager         return false;       }       @override     public boolean onflushdirty(object entity, serializable id,             object[] currentstate, object[] previousstate,             string[] propertynames, type[] types) {         // other code here                 return false;     }      @override       public void postflush(iterator iterator) throws callbackexception {           system.out.println("i on postflush");         // other code here      }   }   

i using jpa entity manager in data access layer perform database operations. jpa configuration below:

<bean id="entitymanagerfactory"         class="org.springframework.orm.jpa.localcontainerentitymanagerfactorybean"         p:persistenceunitname="persistenceunit"         p:persistencexmllocation="classpath*:persistence.xml"         p:datasource-ref="datasource" p:jpavendoradapter-ref="jpaadapter">         <property name="loadtimeweaver">             <bean                 class="org.springframework.instrument.classloading.instrumentationloadtimeweaver" />         </property>     </bean> 

my abstractdao :

public class abstractdao<t, id extends serializable> {      private final transient class<t> persistentclass;      protected transient entitymanager entitymanager;      @suppresswarnings("unchecked")     public abstractdao() {          this.persistentclass = (class<t>) ((parameterizedtype) getclass().getgenericsuperclass()).getactualtypearguments()[0];     }      @persistencecontext     public final void setentitymanager(final entitymanager entitymgrtoset) {          this.entitymanager = entitymgrtoset;     }      public final class<t> getpersistentclass() {          return persistentclass;     }      public final void persist(final t entity) {           entitymanager.persist(entity);            }  } 

i inject jpa entity manager in 'auditloginterceptor' can perform database operations in 'auditloginterceptor' abstract dao.

any idea? should proper solution?

i have got simple way perform database operation using jpa entity manager in 'auditloginterceptor'

i have created below class give application context reference:

@component("applicationcontextprovider")     public class applicationcontextprovider implements applicationcontextaware {         private static applicationcontext context;          public static applicationcontext getapplicationcontext() {             return context;         }          @override         public void setapplicationcontext(applicationcontext ctx) {             context = ctx;         }     } 

created data access class:

@repository("myauditdao") public class myauditdao<t, id extends serializable> {      private final transient class<t> persistentclass;      protected transient entitymanager entitymanager;      @suppresswarnings("unchecked")     public mydao() {          this.persistentclass = (class<t>) ((parameterizedtype) getclass().getgenericsuperclass()).getactualtypearguments()[0];     }      @persistencecontext     public final void setentitymanager(final entitymanager entitymgrtoset) {          this.entitymanager = entitymgrtoset;     }      public final class<t> getpersistentclass() {          return persistentclass;     }      public final t findbyid(final id theid) {          return entitymanager.find(persistentclass, theid);     }      public final void persist(final t entity) {          entitymanager.persist(entity);     }      public final void merge(final t entity) {          entitymanager.merge(entity);     } } 

and used 'applicationcontextprovider' in 'auditloginterceptor' reference of 'myauditdao' having jpa entity manager property injected during dao initialization. of 'myauditdao' can perform database operations.

public class auditloginterceptor extends emptyinterceptor {        @override       public void postflush(iterator iterator) throws callbackexception {          // here can myauditdao reference , can perform persiste/merge options        myauditdao myauditdao = (myauditdao ) applicationcontextprovider.getapplicationcontext().getbean("myauditdao");        //  myauditdao.persist(myentity);      }   }