Question

所以我有一个问题，我对春天有点陌生。因此，基本上我希望在“ retrieveAndSaveInformationFromBac（）”结尾之前什么都不要提交。目前，如果引发异常，则会提交一些更改。这是代码：

public void retrieveAndSaveInformationFromBac() throws ClientWSBacException {
logger.info("Start BATCH BAC");
BatchContextManager.useBatchSchemaForCurrentThread();
Map<ClasseId, Classe> mapClasses = new HashMap<>();
try {
  logger.info("Deleting existant table...");

  deleteAllTables();
  ClientWSBac client = new ClientWSBac(productService);
  List<ModeleBac> listModeleBacToSave = new ArrayList<>();
  for(VehiculeType type : VehiculeType.values()){
    logger.info("Saving the type : "+ type);
    Map<BacFileKey, List<ModeleBac>> mapModeleBac = client.retrieveAndSaveAllFromBac(type, mapClasses);

    listModeleBacToSave = new ArrayList<>();
    for(List<ModeleBac> listModeleBac : mapModeleBac.values()) {
      for(ModeleBac modele : listModeleBac) {


        if(modele.getNivsBac().size() > 0){
          checkEnDescriprions(modele);
          listModeleBacToSave.add(modele);
        }
      }
      if(listModeleBacToSave.size()> 500){
          saveListModeleBac(listModeleBacToSave);
      }

    }
    saveListModeleBac(listModeleBacToSave);
  }
  saveClasseAndTypeCarrosserie(mapClasses);
  logger.info("END OF THE BATCH");
  switchDataSourcesAfterBatch();
} catch (Exception e) {
  logger.error("Error during importation", e);
  throw new ClientWSBacException("Error during importation.Stopping the process....");
}finally{
  BatchContextManager.clear();
}}

这是我“保存”我的信息的地方：

@Transactional
private void saveListModeleBac(List<ModeleBac> listModeleBac){
long startTime = System.nanoTime();
  try{
    modeleBacDAO.save(listModeleBac);
  } catch (Exception e){
    e.printStackTrace();
    logger.error("Error during the save of the informations..");
    throw e;
 }
long endTime = System.nanoTime();
long duration = ((endTime - startTime)/1000000000);
logger.debug("Number of insert : " + String.valueOf(listModeleBac.size())+ " in " + String.valueOf(duration) + " seconds" );}

这是我删除表格的地方：

@Transactional
 private void deleteAllTables(){
if(databaseMode.equals(DatabaseMode.H2)){
  modeleBacDAO.deleteAllModeleBac();
  classeDAO.deleteAllInBatch();
  typeCarrosserieDAO.deleteAllInBatch();
}else{
  dataSourceUtils.callStoredProcVideTable(currentDBSchemaResolver.resolveCurrentTenantIdentifier());
}}

Answer 1

@Transactional can't work on private method，因为它是使用方面（使用动态代理）

应用的

基本上，您希望retrieveAndSaveInformationFromBac()是一个工作单元，即交易。

因此用@Transactional对其进行注释。

Answer 2

由于您使用的是Hibernate，因此可以通过属性来处理：

<property name="hibernate.connection.autocommit">false</property>

然后您可以像

一样进行事务处理

Session session = sessionFactory.openSession();
Transaction tx = session.beginTransaction();
//do stuff and then
tx.commit();

春季休眠直到结束都没有提交

2 个答案: