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From "Christian Schneider (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ARIES-1494) Exception when calling a transactional method twice from a non transaction method
Date Mon, 08 Feb 2016 10:59:39 GMT
Christian Schneider created ARIES-1494:
------------------------------------------

             Summary: Exception when calling a transactional method twice from a non transaction
method
                 Key: ARIES-1494
                 URL: https://issues.apache.org/jira/browse/ARIES-1494
             Project: Aries
          Issue Type: Bug
          Components: JPA
    Affects Versions: jpa-2.3.0
            Reporter: Christian Schneider
            Assignee: Christian Schneider
             Fix For: jpa-2.4.0


This issue was reported by Nicolas Dutertry on the karaf user list:
http://karaf.922171.n3.nabble.com/JPA-and-transaction-issue-in-Karaf-4-0-4-td4045208.html

He also provided a repository with a demo (which I forked):
https://github.com/cschneider/test-jpa

In short TestServiceImpl has a non Transactional method:
    public void delete(String... names) {
        for (String name : names) {
            System.out.println("Deleting " + name);
            deleteManager.delete(name);
        }
    }

It calls DeleteManager
    @Transactional
    public void delete(String lastName) {
        Query query = entityManager.createQuery(
            "delete from Person where lastName = :lastName");
        
        query.setParameter("lastName", lastName);
        query.executeUpdate();
    }

If the method TestServiceImpl.delete is called with one name then it works.
If it is called with two names it fails.

It is not even necessary to first create the person records to show the error.

A workaround is to make the method TestServiceImpl.delete also transactional. Then it works.

I will create a test case in the jpa code and fix the issue.



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