org.hibernate.annotations.common.AssertionFailure: an assertion failure occured (this may indicate a bug in Hibernate)
org.hibernate.annotations.common.AssertionFailure: Access a Sealed WorkQueue which has not been sealed
   at org.hibernate.search.backend.WorkQueue.getSealedQueue(WorkQueue.java:87)
   at org.hibernate.search.backend.impl.BatchedQueueingProcessor.performWorks(BatchedQueueingProcessor.java:128)
   at org.hibernate.search.backend.impl.PostTransactionWorkQueueSynchronization.afterCompletion(PostTransactionWorkQueueSynchronization.java:102)
   at org.hibernate.search.backend.impl.EventSourceTransactionContext$DelegateToSynchronizationOnAfterTx.doAfterTransactionCompletion(EventSourceTransactionContext.java:189)
   at org.hibernate.engine.ActionQueue$AfterTransactionCompletionProcessQueue.afterTransactionCompletion(ActionQueue.java:591)
   at org.hibernate.engine.ActionQueue.afterTransactionCompletion(ActionQueue.java:209)
   at org.hibernate.impl.SessionImpl.afterTransactionCompletion(SessionImpl.java:602)
   at org.springframework.orm.hibernate3.SpringSessionSynchronization.afterCompletion(SpringSessionSynchronization.java:229)
   at org.springframework.transaction.support.TransactionSynchronizationUtils.invokeAfterCompletion(TransactionSynchronizationUtils.java:168)
   at org.springframework.transaction.support.AbstractPlatformTransactionManager.invokeAfterCompletion(AbstractPlatformTransactionManager.java:996)
   at org.springframework.transaction.support.AbstractPlatformTransactionManager.triggerAfterCompletion(AbstractPlatformTransactionManager.java:971)
   at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:799)
   at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:723)
   at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:374)
   at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:120)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
   at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
   at $Proxy68.setFavorites(Unknown Source)

...

org.hibernate.AssertionFailure: an assertion failure occured (this may indicate a bug in Hibernate, but is more likely due to unsafe use of the session)
org.hibernate.HibernateException: Error while indexing in Hibernate Search (ater transaction completion)
   at org.hibernate.search.backend.impl.EventSourceTransactionContext$DelegateToSynchronizationOnAfterTx.doAfterTransactionCompletion(EventSourceTransactionContext.java:192)
   at org.hibernate.engine.ActionQueue$AfterTransactionCompletionProcessQueue.afterTransactionCompletion(ActionQueue.java:591)
   at org.hibernate.engine.ActionQueue.afterTransactionCompletion(ActionQueue.java:209)
   at org.hibernate.impl.SessionImpl.afterTransactionCompletion(SessionImpl.java:602)
   at org.springframework.orm.hibernate3.SpringSessionSynchronization.afterCompletion(SpringSessionSynchronization.java:229)
   at org.springframework.transaction.support.TransactionSynchronizationUtils.invokeAfterCompletion(TransactionSynchronizationUtils.java:168)
   at org.springframework.transaction.support.AbstractPlatformTransactionManager.invokeAfterCompletion(AbstractPlatformTransactionManager.java:996)
   at org.springframework.transaction.support.AbstractPlatformTransactionManager.triggerAfterCompletion(AbstractPlatformTransactionManager.java:971)
   at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:799)
   at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:723)
   at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:374)
   at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:120)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
   at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
   at $Proxy68.setFavorites(Unknown Source)

<bean id="session_factory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
      <property name="dataSource" ref="${...}" />
      <property name="hibernateProperties">
         <props>
                 <prop key="hibernate.dialect">${encoway_appbase.favorite.hibernate.dialect}</prop>
                 <prop key="hibernate.cache.region.factory_class">net.sf.ehcache.hibernate.EhCacheRegionFactory</prop>
            <prop key="hibernate.cache.use_second_level_cache">true</prop>
            <prop key="hibernate.cache.use_minimal_puts">true</prop>
            <prop key="hibernate.cache.provider_configuration_file_resource_path">${...}</prop>
            <prop key="hibernate.cache.use_query_cache">true</prop>
            <prop key="hibernate.cache.use_structured_entries">false</prop>
            <prop key="hibernate.default_entity_mode">pojo</prop>
            <prop key="hibernate.use_structured_cache">true</prop>
            <prop key="hibernate.show_sql">false</prop>
            <prop key="hibernate.hbm2ddl.auto">none</prop>
            <prop key="hibernate.default_batch_fetch_size">10</prop>
            <prop key="hibernate.generate_statistics">false</prop>
            <prop key="hibernate.jdbc.batch_size">30</prop>
            <prop key="hibernate.order_inserts">true</prop>
            <prop key="hibernate.order_updates">true</prop>
            <prop key="hibernate.search.default.directory_provider">${...}</prop>
            <prop key="hibernate.search.default.indexBase">${...}</prop>
            <prop key="hibernate.search.analyzer">${...}</prop>
            <prop key="hibernate.search.indexing_strategy">event</prop>
         </props>
      </property>
   </bean>

     <tx:annotation-driven transaction-manager="transactionManager"/>
   <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
      <property name="sessionFactory" ref="session_factory" />
   </bean>

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>
       classpath:another_project_with_jpa_tm_context.xml
       classpath:my_project_with_hibernate_tm_context.xml
    </param-value>
</context-param>

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>
       classpath:my_project_with_hibernate_tm_context.xml
       classpath:another_project_with_jpa_tm_context.xml
    </param-value>
</context-param>