Hi everybody,
I am writing a library that needs to do some database initialization
at startup time. The library will be used in standalone applications
and in web applications. After having read the docs, I came to the
conclusion that I should use WorkManager to execute the SQL statements
at boot time. My understanding of WorkManager is that whatever the
UnitOfWork is in the app, I can use the WorkManager for situations
where I manually specify (beginWork/endWork) the boundaries of my unit
of work.
Something seems to be wrong, however. I have a test application
(actually, a unit test) that installs a module like this:
protected void configure()
{
install(PersistenceService.usingHibernate().across
(UnitOfWork.TRANSACTION).buildModule());
// Database configuration
Properties properties = new Properties();
properties.setProperty("hibernate.connection.driver_class",
"org.h2.Driver");
properties.setProperty("hibernate.dialect",
"org.hibernate.dialect.H2Dialect");
properties.setProperty("hibernate.connection.url",
"jdbc:h2:mem:"); // in-memory db
properties.setProperty("hibernate.current_session_context_class",
"thread");
properties.setProperty("hibernate.connection.provider_class",
"org.hibernate.connection.C3P0ConnectionProvider");
/*...*/
bind(Configuration.class).toInstance(new AnnotationConfiguration
()./*...*/setProperties(properties));
// Populate the database
bind(QuartzDatabasePopulator.class).toInstance(new
QuartzDatabasePopulator());
}
The last line is a binding to a class that populates the DB with the
OpenSymphony Quartz tables, if needed. It uses WorkManager's beginWork
() and endWork() and a Provider<Session> to do the actual work. But I
get:
Caused by: java.lang.IllegalStateException: Cannot use WorkManager
with UnitOfWork.TRANSACTION
It seems that my understanding of WorkManager is wrong. Could somebody
clarify this?
Also, if WorkManager is the wrong mean, how can I get a Hibernate
session via Guice?
Thanks,
Kaspar
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