protected AbstractSessionImpl(SessionFactoryImpl factory) 
{
		this.factory = factory;
}

 public Query createQuery(String queryString) 
{
		errorIfClosed();
		QueryImpl query = new QueryImpl(
				queryString,
		        this,
		        getHQLQueryPlan( queryString, false ).getParameterMetadata()
		);
		query.setComment( queryString );
		return query;
}

 public SQLQuery createSQLQuery(String sql) 
{
		errorIfClosed();
		SQLQueryImpl query = new SQLQueryImpl(
				sql,
		        this,
		        factory.getQueryPlanCache().getSQLParameterMetadata( sql )
		);
		query.setComment( "dynamic native SQL query" );
		return query;
}

 protected  void errorIfClosed() 
{
		if ( closed ) {
			throw new SessionException( "Session is closed!" );
		}
}

 public SessionFactoryImplementor getFactory() 
{
		return factory;
}

 protected HQLQueryPlan getHQLQueryPlan(String query,
    boolean shallow) throws HibernateException 
{
		return factory.getQueryPlanCache().getHQLQueryPlan( query, shallow, getEnabledFilters() );
}

 public Query getNamedQuery(String queryName) throws MappingException 
{
		errorIfClosed();
		NamedQueryDefinition nqd = factory.getNamedQuery( queryName );
		final Query query;
		if ( nqd != null ) {
			String queryString = nqd.getQueryString();
			query = new QueryImpl(
					queryString,
			        nqd.getFlushMode(),
			        this,
			        getHQLQueryPlan( queryString, false ).getParameterMetadata()
			);
			query.setComment( "named HQL query " + queryName );
		}
		else {
			NamedSQLQueryDefinition nsqlqd = factory.getNamedSQLQuery( queryName );
			if ( nsqlqd==null ) {
				throw new MappingException( "Named query not known: " + queryName );
			}
			query = new SQLQueryImpl(
					nsqlqd,
			        this,
			        factory.getQueryPlanCache().getSQLParameterMetadata( nsqlqd.getQueryString() )
			);
			query.setComment( "named native SQL query " + queryName );
			nqd = nsqlqd;
		}
		initQuery( query, nqd );
		return query;
}

 public Query getNamedSQLQuery(String queryName) throws MappingException 
{
		errorIfClosed();
		NamedSQLQueryDefinition nsqlqd = factory.getNamedSQLQuery( queryName );
		if ( nsqlqd==null ) {
			throw new MappingException( "Named SQL query not known: " + queryName );
		}
		Query query = new SQLQueryImpl(
				nsqlqd,
		        this,
		        factory.getQueryPlanCache().getSQLParameterMetadata( nsqlqd.getQueryString() )
		);
		query.setComment( "named native SQL query " + queryName );
		initQuery( query, nsqlqd );
		return query;
}

 protected NativeSQLQueryPlan getNativeSQLQueryPlan(NativeSQLQuerySpecification spec) throws HibernateException 
{
		return factory.getQueryPlanCache().getNativeSQLQueryPlan( spec );
}

 public boolean isClosed() 
{
		return closed;
}

 public List list(NativeSQLQuerySpecification spec,
    QueryParameters queryParameters) throws HibernateException 
{
		return listCustomQuery( getNativeSQLQueryPlan( spec ).getCustomQuery(), queryParameters );
}

 public ScrollableResults scroll(NativeSQLQuerySpecification spec,
    QueryParameters queryParameters) throws HibernateException 
{
		return scrollCustomQuery( getNativeSQLQueryPlan( spec ).getCustomQuery(), queryParameters );
}

 protected  void setClosed() 
{
		closed = true;
}