Ello guys,
I'm getting a LazyInitializationException while trying to access a ManyToMany mapped object as Lazy fetch mode in the View. I tried to implement the OpenSessionInView (
https://www.hibernate.org/43.html), with an Interceptor and a Servlet Filter but no one works.
Follows JBoss log:
Quote:
2010-01-09 09:33:45,593 TRACE [org.hibernate.event.def.AbstractFlushingEventListener] (http-0.0.0.0-8080-1) executing flush
2010-01-09 09:33:45,593 TRACE [org.hibernate.jdbc.ConnectionManager] (http-0.0.0.0-8080-1) registering flush begin
2010-01-09 09:33:45,593 TRACE [org.hibernate.jdbc.ConnectionManager] (http-0.0.0.0-8080-1) registering flush end
2010-01-09 09:33:45,593 TRACE [org.hibernate.event.def.AbstractFlushingEventListener] (http-0.0.0.0-8080-1) post flush
2010-01-09 09:33:45,593 TRACE [org.hibernate.jdbc.JDBCContext] (http-0.0.0.0-8080-1) before transaction completion
2010-01-09 09:33:45,593 TRACE [org.hibernate.impl.SessionImpl] (http-0.0.0.0-8080-1) before transaction completion
2010-01-09 09:33:45,593 DEBUG [org.hibernate.transaction.JDBCTransaction] (http-0.0.0.0-8080-1) committed JDBC Connection
2010-01-09 09:33:45,593 TRACE [org.hibernate.jdbc.JDBCContext] (http-0.0.0.0-8080-1) after transaction completion
2010-01-09 09:33:45,593 DEBUG [org.hibernate.jdbc.ConnectionManager] (http-0.0.0.0-8080-1) transaction completed on session with on_close connection release mode; be sure to close the session to release JDBC resources!
2010-01-09 09:33:45,593 TRACE [org.hibernate.impl.SessionImpl] (http-0.0.0.0-8080-1) after transaction completion
2010-01-09 09:33:45,593 TRACE [org.hibernate.impl.SessionImpl] (http-0.0.0.0-8080-1) automatically closing session
2010-01-09 09:33:45,593 TRACE [org.hibernate.impl.SessionImpl] (http-0.0.0.0-8080-1) closing session
2010-01-09 09:33:45,593 TRACE [org.hibernate.jdbc.ConnectionManager] (http-0.0.0.0-8080-1) performing cleanup
2010-01-09 09:33:45,593 DEBUG [org.hibernate.jdbc.ConnectionManager] (http-0.0.0.0-8080-1) releasing JDBC connection [ (open PreparedStatements: 0, globally: 0) (open ResultSets: 0, globally: 0)]
2010-01-09 09:33:45,593 TRACE [org.hibernate.connection.DriverManagerConnectionProvider] (http-0.0.0.0-8080-1) returning connection to pool, pool size: 1
2010-01-09 09:33:45,593 TRACE [org.hibernate.jdbc.JDBCContext] (http-0.0.0.0-8080-1) after transaction completion
2010-01-09 09:33:45,593 DEBUG [org.hibernate.jdbc.ConnectionManager] (http-0.0.0.0-8080-1) transaction completed on session with on_close connection release mode; be sure to close the session to release JDBC resources!
2010-01-09 09:33:45,593 TRACE [org.hibernate.impl.SessionImpl] (http-0.0.0.0-8080-1) after transaction completion
2010-01-09 09:33:45,593 TRACE [org.hibernate.context.ThreadLocalSessionContext] (http-0.0.0.0-8080-1) allowing proxied method [hashCode] to proceed to real session
2010-01-09 09:33:45,593 TRACE [net.m21xx.integra.domain.base.BaseDAO] (http-0.0.0.0-8080-1) Session now is 25411043
2010-01-09 09:33:45,609 TRACE [net.m21xx.integra.utils.HibernateUtil] (http-0.0.0.0-8080-1) Getting current SessionFactory
2010-01-09 09:33:45,609 DEBUG [org.hibernate.impl.SessionImpl] (http-0.0.0.0-8080-1) opened session at timestamp: 12630404256
2010-01-09 09:33:45,609 TRACE [org.hibernate.context.ThreadLocalSessionContext] (http-0.0.0.0-8080-1) allowing proxied method [hashCode] to proceed to real session
2010-01-09 09:33:45,609 TRACE [net.m21xx.integra.domain.base.BaseDAO] (http-0.0.0.0-8080-1) Session before was 23602427
2010-01-09 09:33:45,609 TRACE [org.hibernate.context.ThreadLocalSessionContext] (http-0.0.0.0-8080-1) allowing method [beginTransaction] in non-transacted context
2010-01-09 09:33:45,609 TRACE [org.hibernate.context.ThreadLocalSessionContext] (http-0.0.0.0-8080-1) allowing proxied method [beginTransaction] to proceed to real session
2010-01-09 09:33:45,609 DEBUG [org.hibernate.transaction.JDBCTransaction] (http-0.0.0.0-8080-1) begin
2010-01-09 09:33:45,609 DEBUG [org.hibernate.jdbc.ConnectionManager] (http-0.0.0.0-8080-1) opening JDBC connection
Follows part of the mapping:
Code:
<class name="GruposVO" table="grupos">
<id name="id">
<generator class="native" />
</id>
<property name="nome" />
<property name="descricao" />
<bag name="usuarios" lazy="true" table="usuarios_grupos">
<key column="grupoId" />
<many-to-many column="usuarioId" class="UsuariosVO" />
</bag>
</class>
<class name="UsuariosVO" table="usuarios">
<id name="id">
<generator class="native" />
</id>
<property name="nome" column="usuario" />
<property name="senha" />
<property name="habilitado" />
<property name="dataCriacao" column="tsDataCriacao" />
<property name="ultimoLogin" column="tsUltimoLogin" />
<bag name="grupos" lazy="true" table="usuarios_grupos">
<key column="usuarioId" />
<many-to-many column="grupoId" class="GruposVO" />
</bag>
<bag name="sessoes" lazy="true" inverse="true">
<key column="usuarioId" />
<one-to-many class="SessoesVO" />
</bag>
</class>
Follows the hibernate.cfg.xml:
Code:
<session-factory>
<property name="hibernate.connection.driver_class">org.gjt.mm.mysql.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/integra</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.password"></property>
<property name="hibernate.connection.pool_size">1</property>
<property name="hibernate.connection.autocommit">false</property>
<property name="hibernate.connection.release_mode">on_close</property>
<property name="hibernate.default_schema">integra</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</property>
<!--
<property name="hibernate.transaction.factory_class">org.hibernate.transaction.JTATransactionFactory</property>
<property name="hibernate.transaction.manager_lookup_class">org.hibernate.transaction.JBossTransactionManagerLookup</property>
-->
<property name="hibernate.transaction.auto_close_session">false</property>
<property name="hibernate.transaction.flush_before_completion">false</property>
<property name="hibernate.cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
<property name="hibernate.current_session_context_class">thread</property>
<property name="hibernate.show_sql">false</property>
<mapping resource="mapeamento.hbm.xml"/>
</session-factory>
Follows the servletFilter:
Code:
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
throws IOException, ServletException
{
logger.debug("Filtro executando...");
Session lSession = null;
try
{
logger.trace("Opening Hibernate session");
lSession = HibernateUtil.getSessionFactory().openSession();
logger.trace("Session now is " + lSession.hashCode());
chain.doFilter(request, response);
}
finally
{
logger.trace("Session now is " + lSession.hashCode());
if (lSession.isOpen())
{
lSession.close();
}
else
{
logger.debug("AVISO: Sessao ja foi fechada!");
}
logger.debug("Filtro executado com sucesso.");
}
}
Any idea how to force the session to stay active?
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