http://camel.apache.org/tutorials.html
The second to last tutorial, Reportincident shows you all of these concepts. On Nov 19, 2010, at 2:45 PM, Mike Van wrote: > > > > Achim, > > > > That's very interesting. I'd be interested in seeing examples of what your'e > talking about, if you can point me in the right direction. > > > > v/r, > > > > Mike Van > > > ----- Original Message ----- > From: "Achim Nierbeck [via Karaf]" > <[email protected]> > To: "Mike Van" <[email protected]> > Sent: Friday, November 19, 2010 4:15:59 PM > Subject: Re: Accessing database connections using SpringDM in Karaf > > Hi, > > if you don't want spring to start the application context, move your > spring files to another directory. > You might also take a look at the spring-dm documentation about what you > can do to influence the starting behavior. > > BTW. do you know that you can let do spring take care of DataSources? > You can even > configure a datasource as a osgi-service and spring-dm or blueprint can > take care of injecting this datasource service. > > greetings, achim > > >> https://github.com/ANierbeck/jmx-webconsole >> Ok, This is a doozy. >> >> I'm using Karaf 2.0.0, with SpringDM. >> >> My OSGi application has a database-access bundle which contains two >> applicationContext.xml files in the META-INF/spring directory. One of these >> xml files creates a bean called myAppDataSourceController, which provides >> access to our database via the associated pojo. All this deploys properly >> and I'm able to verify the database connection. >> >> To test whether it works, I've created a simple Spring testHarness >> consisting of one class (DAOTest.java) which attempts to use my >> database-access bundle to connect to the database and write a column in a >> table. It als has a testApplicationContext.xml file which creates a bean, >> and references the method that begins the test in DAOTest.java. This is >> failing. >> >> In my old non-osgi implementation, I had a DataSourceControllerFactory class >> whose static final inner-class (named Holder) looks as such: >> >> // non-important bits removed >> private static final class Holder { >> >> private static final DataSourceController INSTANCE; >> >> static { >> final String[] contexts = { >> "META-INF/spring/ControllerAppContext.xml", >> "META-INF/spring/DataSourceAppContext.xml" }; >> >> final ApplicationContext ctx = new >> ClassPathXmlApplicationContext(contexts); >> INSTANCE = {DataSourceController} >> ctx.getBean("myAppDataSourceController"); >> >> } >> >> } >> >> I use this class to enforce the singleton pattern we are using. The >> enclosing class has one major method: >> public static final DataSourceController getInstance() { >> try { >> return Holder.INSTANCE; >> } catch statement stuff... >> >> } >> >> When another part of the application tried to access the database, it would >> call DataSourceControllerFactory.getInstance(), to get a copy of the >> DataSourceController which would provide database access. >> >> Is there a similar way to access a database from within Karaf? Obviously, >> this way isn't going to work as SpringDM evaluates the context.xml files, >> and creates a connection before the above methods are called. In fact, >> calling the above methods results in an attempt to read the context files >> again, but from the module attempting to get a handle to the database >> connection. >> >> Anyhow, before this gets too long, I'm just looking for OSGi friendly >> suggestions to access our database. Can anyone help me out? >> >> Mike Van > > > > > View message @ > http://karaf.922171.n3.nabble.com/Accessing-database-connections-using-SpringDM-in-Karaf-tp1932916p1932992.html > > To start a new topic under Karaf - User, email > [email protected] > To unsubscribe from Karaf - User, click here . > -- > View this message in context: > http://karaf.922171.n3.nabble.com/Accessing-database-connections-using-SpringDM-in-Karaf-tp1932916p1933143.html > Sent from the Karaf - User mailing list archive at Nabble.com.
