JDBC DAO bean in other bundle
Hello,
I'm using a trivial DAO with SimpleJdbcTemplate that throws an exception to force a rollback:
Code:
package com.xxx.dao;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.jdbc.core.simple.SimpleJdbcDaoSupport;
@Transactional
public class MyDAOImpl extends SimpleJdbcDaoSupport implements MyDAO {
public void putData() {
String sql = "INSERT INTO user (login,pass) "
+ "VALUES (?, ?)";
getJdbcTemplate().update(sql, "some" , "data" );
throw new RuntimeException("Test rollback");
}
}
This works ok inside a bundle that defines the data source and tx manager:
Code:
<bean id="dataSource" destroy-method="close"
class="org.apache.commons.dbcp.BasicDataSource">
...mysql parameters... </bean>
<bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/></bean>
<tx:annotation-driven transaction-manager="txManager"/>
<bean id="dao" class="com.xxxx.dao.MyDAOImpl">
<property name="dataSource" ref="dataSource"/>
</bean>
The problem occurs when I put the bean inside another bundle, from which I try to reference the datasource and the transaction manager in this way:
Code:
<osgi:service ref="dataSource" interface="javax.sql.DataSource"/>
<osgi:service ref="txManager" interface="org.springframework.transaction.PlatformTransactionManager"/>
<tx:annotation-driven transaction-manager="txManager"/>
...
The code inserts the row, but the rollback doesn't undo it. Checking the MySQL log, the rollback indeed runs, but is applied to another connection.
My guess is that the spring-osgi-proxy nature of the datasource/txmanager beans is confilcting the way the aop proxy associates the transaction to the current thread with the connection used by the JdbcTemplate.
The log shows a couple of messages that (I think) point in that direction.
Code:
0:26:13.049] Thread-108 <> Acquired Connection [jdbc:mysql://localhost/xx, UserName=xx@localhost, MySQL-AB JDBC Driver] for JDBC transaction
[2010-04-16 20:26:13.050] Thread-108 <> Switching JDBC Connection [jdbc:mysql://localhost/xx, UserName=xx@localhost, MySQL-AB JDBC Driver] to manual commit
[2010-04-16 20:26:13.051] Thread-108 <> Fetching JDBC Connection from DataSource
Can you give me some ideas to follow? I'm not sure if I can publish the datasource/txmanager at all; in that case I'd like to know alternatives for externalizing the DAOs.
Regards,
BTW, using springsource-dm-server-2.0.1.RELEASE.
