[GitHub] [shardingsphere] ulwx commented on issue #24735: An null exception occurred when integrating seata

["ulwx (via GitHub)" <gi...@apache.org>]

ulwx commented on issue #24735:
URL: https://github.com/apache/shardingsphere/issues/24735#issuecomment-1482207313

   @Transactional(propagation = Propagation.REQUIRED)
    @GlobalTransactional
    public void updateUseAkDs() {
        TransactionTypeHolder.set(TransactionType.BASE);
        addressDao.updateMdForMaster2(1, "123");
        try {
            addressDao.updateMdForMaster1(2, "abc");
        } catch (Exception ex) {
            LOGGER.debug(ex + "");
        }
   
    }
   
   @GlobalTransactional is an annotation from seata, indicating that this is a global transaction. When TransactionTypeHolder. set (TransactionType. BASE) is used in a method（using the @ GlobalTransactional annotation）, an error will be reported. The reason is that sharding-jdbc determines in the code that if it is in a global transaction, SeataATShardingSphereTransactionManager#begin() is not executed, finally,  in the code ”SeataTransactionHolder. get(). commit()” in the SeataATShardingSphereTransactionManager#commit() method, SeataTransactionHolder. get()=null, resulting in a null exception!
   


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