Category: Mybatis transaction

Mybatis transaction

30.10.2020 By Gunris

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Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I tried to use Transactional annotation in spring and mybatis using mybatis-spring dependency. This is the service layer. As you can see, a RuntimeException is thrown out in insert1so the insert operation should fail. But in fact, it didn't. The record was inserted successfully. Deinum metioned, I have to make the method where Transactional applied public, in other words, I have to change.

When using proxies, you should apply the Transactional annotation only to methods with public visibility. If you do annotate protected, private or package-visible methods with the Transactional annotation, no error is raised, but the annotated method does not exhibit the configured transactional settings.

Consider the use of AspectJ see below if you need to annotate non-public methods.

org.apache.ibatis.transaction.jdbc

Learn more. How to use Transactional annotation in mybatis-spring? Ask Question. Asked 3 years, 4 months ago. Active 3 years, 4 months ago. Viewed 9k times.

mybatis transaction

Here is my main method. Searene Searene ShubhamAgarwal Thank you for the reminder, I just added it in the spring configuration, but it still didn't work. And have you wrapped your datasource under transactionManager? In fact, it worked perfectly in the programmatic way, I mean, using PlatformTransactionManager. But it doesn't work with TransactionalI don't know why.Once a Spring transaction manager is configured, you can configure transactions in Spring as you normally would.

Both Transactional annotations and AOP style configurations are supported. A single SqlSession object will be created and used for the duration of the transaction. This session will be committed or rolled back as appropriate when then transaction completes.

MyBatis-Spring will transparently manage transactions once they are set up. There is no need for additional code in your DAO classes. To enable Spring transaction processing, simply create a DataSourceTransactionManager in your Spring configuration file:.

JdbcTransactionFactory

Note that the DataSource specified for the transaction manager must be the same one that is used to create the SqlSessionFactoryBean or transaction management will not work. If you are using a JEE container and would like Spring to participate in container managed transactions CMTthen Spring should be configured with a JtaTransactionManager or one of its container specific subclasses. Spring will automatically use any existing container transaction and attach an SqlSession to it.

If no transaction is started and one is needed based on the transaction configuration, Spring will start a new container managed transaction. MyBatis SqlSession provides you with specific methods to handle transactions programmatically. That means that Spring will always handle your transactions. You cannot call SqlSession. If you try to do so, a UnsupportedOperationException exception will be thrown. Note these methods are not exposed in injected mapper classes.

Regardless of your JDBC connection's autocommit setting, any execution of a SqlSession data method or any call to a mapper method outside a Spring transaction will be automatically committed. If you want to control your transactions programmatically please refer to the Spring reference document Data Access -Programmatic transaction management. This code shows how to handle a transaction manually using the PlatformTransactionManager.

You can omit to call the commit and rollback method using the TransactionTemplate. Last Published: 09 March Version: 2. Programmatic Transaction Management MyBatis SqlSession provides you with specific methods to handle transactions programmatically.All Superinterfaces: java.

AutoCloseablejava.

mybatis transaction

Closeable The primary Java interface for working with MyBatis. Through this interface you can execute commands, get mappers and manage transactions. Retrieve a single row mapped from the statement key and parameter using a ResultHandler. Retrieve a single row mapped from the statement key and parameter using a ResultHandler and RowBounds. Retrieve a single row mapped from the statement using a ResultHandler. A Cursor offers the same results as a List, except it fetches data lazily using an Iterator.

Retrieve a list of mapped objects from the statement key and parameter, within the specified row bounds. The selectMap is a special case in that it is designed to convert a list of results into a Map based on one of the properties in the resulting objects. Execute an insert statement with the given parameter object. Any generated autoincrement values or selectKey entries will modify the given parameter object properties.

Only the number of rows affected will be returned. Flushes batch statements and commits database connection. To force the commit call commit boolean. Discards pending batch statements and rolls database connection back. To force the rollback call rollback boolean. Retrieve a list of mapped objects from the statement key and parameter.

Retrieve a single row mapped from the statement key and parameter.Once you have a session, you use it to execute your mapped statements, commit or rollback connections and finally, when it is no longer needed, you close the session.

With MyBatis-Spring you don't need to use SqlSessionFactory directly because your beans can be injected with a thread safe SqlSession that automatically commits, rollbacks and closes the session based on Spring's transaction configuration. It implements SqlSession and is meant to be a drop-in replacement for any existing use of SqlSession in your code.

In addition, it manages the session life-cycle, including closing, committing or rolling back the session as necessary. SqlSessionTemplate should always be used instead of default MyBatis implementation DefaultSqlSession because the template can participate in Spring transactions and is thread safe for use by multiple injected mapper classes.

mybatis transaction

Switching between the two classes in the same application can cause data integrity issues. This bean can now be injected directly in your DAO beans. You need a SqlSession property in your bean like the following.

SqlSessionTemplate has also a constructor that takes an ExecutorType as an argument. This allows you to construct, for example, a batch SqlSession by using the following in Spring's configuration file:.

Now all your statements will be batched so the following could be coded in a DAO. Note that this configuration style only needs to be used if the desired execution method differs from the default set for the SqlSessionFactory.

The caveat to this form is that there cannot be an existing transaction running with a different ExecutorType when this method is called. Either ensure that calls to SqlSessionTemplate s with different executor types run in a separate transaction e.

Usually MapperFactoryBean is preferred to this class, since it requires no extra code. But, this class is useful if you need to do other non-MyBatis work in your DAO and concrete classes are required. If both properties are set, the sqlSessionFactory is ignored. Last Published: 09 March Version: 2.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. It looks like that prcessTransaction method is not only one transaction but sets of multiple transactions.

I am using Spring 3. Putting transactional on a private method looks problematic, the Spring documentation says:. In proxy mode which is the defaultonly external method calls coming in through the proxy are intercepted.

This means that self-invocation, in effect, a method within the target object calling another method of the target object, will not lead to an actual transaction at runtime even if the invoked method is marked with Transactional. When using proxies, you should apply the Transactional annotation only to methods with public visibility. If you do annotate protected, private or package-visible methods with the Transactional annotation, no error is raised, but the annotated method does not exhibit the configured transactional settings.

Consider the use of AspectJ see below if you need to annotate non-public methods. We had a similar problem, but in a more complex environment where we have 2 databases with their own transaction manager each. The only way we got it to work was to specify the transaction manager instance on the Transactional "transactionManager" annotation. It works, though I'm left unsatisfied as I don't understand why we need to explicitly specify the transaction manager on the annotation.

Learn more. How to set up transaction with myBatis and Spring Ask Question. Asked 8 years, 8 months ago. Active 8 years, 8 months ago.

Viewed 15k times. I am trying set up transaction but without success. Nathan Hughes In the previous chapter, we have seen how to install MyBatis. Since we are communicating with the database, we have to configure the details of the database. By using this file, you can configure various elements. Within the environments element, we configure the environment of the database that we use in our application. In MyBatis, you can connect to multiple databases by configuring multiple environment elements.

To configure the environment, we are provided with two sub tags namely transactionManager and dataSource. If we use the transaction manager of type JDBC, the application is responsible for the transaction management operations, such as, commit, roll-back, etc It is generally used with the Web Applications. It is used to configure the connection properties of the database, such as driver-name, url, user-name, and password of the database that we want to connect.

It is a bit slower and generally used for the simple applications. And, for every database operation, MyBatis uses one of these connections, and returns them to the pool after the completion of the operation. It reduces the initial connection and authentication time that required to create a new connection.

Instead of specifying the absolute class name everywhere, we can use typeAliases, a shorter name for a Java type. Suppose, we have a class Student in Student.

For example, the name of the mapper xml file is Student. We can use mapper interfaces instead of xml file, the attribute class points to the class-path of the mapper interface. The attribute name points to the package name of the mapper interface. In the example provided in this chapter, we have specified the class path of the mapper XML using the resource attribute. In addition to these, there are other elements that can be used in the configuration file of MyBatis documentation.

Refer MyBatis documentation for the complete details. MySQL is one of the most popular open-source database systems available today. Let us create a SqlMapConfig.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I'm working in Spring project, using mybatis 3 and oracle 11g.

I tried to rollback transactions when errors happen. However, rollback seems not to be working. I read on Mybatis home page and it said transaction annotations doesn't need.

mybatis transaction

I also put the annotations and nothing happened. You try to do both. Decide - either let Spring manage transactions - configure myBatis with Spring config - more simple way or manually create DefaultTransactionDefinition etc. Learn more. Mybatis sqlsession unable to rollback Ask Question. Asked 4 years, 1 month ago. Active 3 years ago. Viewed 4k times. Source code bellow: ApplicationContext. Any solutions? Tran Tam. Tran Tam Tran Tam 1 1 gold badge 9 9 silver badges 24 24 bronze badges.

Personally, I would try the Transactional annotation and let the method throw the exception instead of catching it. In this case you shouldn't need the SqlSessionFactory or the SqlSessionbut can inject the mapper directly and Spring should take care of the rest. See the Spring documenation: docs. You are declaring a transaction manager outside Mybatis, so you can not use the SqlSession commit or rollback.

Using Transactional in the Service methods should defenitely work for you. Well, it worked for me fine. Active Oldest Votes. Sergii Shevchyk Sergii Shevchyk Sign up or log in Sign up using Google. Sign up using Facebook.