@Aspect
@Configuration
public class TxAdviceInterceptor {
	
	// 超時時間 單位秒
	private static final int TX_METHOD_TIMEOUT = 5;
    private static final String AOP_POINTCUT_EXPRESSION = "execution (* com.hwj..service.*.*(..))";
 
    @Autowired
    private PlatformTransactionManager transactionManager;
 
    @Bean
    public TransactionInterceptor txAdvice() {
        NameMatchTransactionAttributeSource source = new NameMatchTransactionAttributeSource();
         
        // 只讀事務，不做更新操作
        RuleBasedTransactionAttribute readOnlyTx = new RuleBasedTransactionAttribute();
        readOnlyTx.setReadOnly(true);
        readOnlyTx.setPropagationBehavior(TransactionDefinition.PROPAGATION_NOT_SUPPORTED );
        // 當前存在事務就使用當前事務，當前不存在事務就建立一個新的事務
        RuleBasedTransactionAttribute requiredTx = new RuleBasedTransactionAttribute();
        requiredTx.setRollbackRules(
            Collections.singletonList(new RollbackRuleAttribute(Exception.class)));
        requiredTx.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRED);
        requiredTx.setTimeout(TX_METHOD_TIMEOUT);
        Map<String, TransactionAttribute> txMap = new HashMap<>();
        txMap.put("add*", requiredTx);
        txMap.put("save*", requiredTx);
        txMap.put("insert*", requiredTx);
        txMap.put("update*", requiredTx);
        txMap.put("delete*", requiredTx);
        txMap.put("get*", readOnlyTx);
        txMap.put("query*", readOnlyTx);
        source.setNameMap( txMap );
        TransactionInterceptor txAdvice = new TransactionInterceptor(transactionManager, source);
        return txAdvice;
    }
 
    @Bean
    public Advisor txAdviceAdvisor() {
        AspectJExpressionPointcut pointcut = new AspectJExpressionPointcut();
        pointcut.setExpression(AOP_POINTCUT_EXPRESSION);
        return new DefaultPointcutAdvisor(pointcut, txAdvice());
    }
    
    @Bean    //一定要注入這個（劃重點）
    public SessionFactory sessionFactory(HibernateEntityManagerFactory hemf){    
        return hemf.getSessionFactory();    
    }     

}