Thanks!! I think that this is a very good tendency. All that it is writting in this post is very interesting and I'm reading with a lot of enthusiasm. And it is a very good way to learn about other tools that I could use in the future :)
I'm going to test this code On Tue, Mar 20, 2012 at 11:27 AM, Neil Bartlett <[email protected]>wrote: > You certainly don't need Glassfish... you don't need Karaf or Blueprint > either. > > There is a tendency on many mailing lists to respond to beginner questions > with answers like "you can do this with product X" where X happens to be > the product that the person is working on or selling. Those products may > indeed add value but they are rarely the only or the simplest way to > achieve what you want! > > To register a DataSource service with pure OSGi, it's as simple as writing > this code in a BundleActivator (using MySQL as an example): > > DataSource ds = new com.mysql.jdbc.jdbc2.optional.MysqlDataSource(); > context.registerService(DataSource.class.getName(), ds, null); > > This would be your "bridge" bundle that you deploy alongside the MySQL > driver JAR. For other database types, write a different 2 lines of code and > deploy that bundle instead. > > Kind regards, > Neil > > > > On Tuesday, 20 March 2012 at 09:58, elMateo wrote: > > > Sorry for my ignorance, but why does it need a Glassfish server? > > > > If I only want to access to a database through a bundle, Is necessary a > > server? > > > > On Sat, Mar 17, 2012 at 10:25 PM, Peter Penzov > > <[email protected](mailto: > [email protected])>wrote: > > > > > I use Glassfish and Apache Felix. Can you tell me how to rewrite this > > > bundle activator. > > > > > > package org.DX_57.osgi.SH_27.impl; > > > > > > import javax.sql.DataSource; > > > import java.sql.SQLException; > > > > > > import java.util.Properties; > > > import org.DX_57.osgi.SH_27.api.SessionHandle; > > > import org.osgi.framework.BundleActivator; > > > import org.osgi.framework.BundleContext; > > > import org.osgi.framework.Constants; > > > import org.osgi.framework.Filter; > > > import org.osgi.framework.ServiceReference; > > > import org.osgi.framework.ServiceRegistration; > > > import org.osgi.util.tracker.ServiceTracker; > > > > > > > > > public class SessionHandleApp implements BundleActivator { > > > > > > public static final String DSNAME = "jdbc/Oracle"; > > > public ServiceTracker st; > > > > > > @Override > > > public void start(final BundleContext bc) throws Exception { > > > debug("Activator started"); > > > > > > > > > Filter filter = bc.createFilter("(&" + "(" + Constants.OBJECTCLASS > > > + "=" + DataSource.class.getName() + ")" + "(jndi-name=" > > > + DSNAME + ")" + ")"); > > > st = new ServiceTracker(bc, filter, null) { > > > > > > @Override > > > public Object addingService(ServiceReference reference) { > > > DataSource ds = (DataSource) bc.getService(reference); > > > try { > > > debug(ds.getConnection().toString()); > > > > > > SessionHandle sh = new SessionHandleImpl(); > > > sh.setDataSource(ds); > > > ServiceRegistration registerService = > > > bc.registerService(SessionHandle.class.getName(), sh, new > Properties()); > > > > > > } catch (SQLException e) { > > > } > > > > > > return super.addingService(reference); > > > } > > > > > > @Override > > > public void removedService(ServiceReference reference, > > > Object service) { > > > super.removedService(reference, service); > > > } > > > > > > }; > > > st.open(); > > > } > > > > > > public void stop(BundleContext bc) throws Exception { > > > boolean ungetService = > > > bc.ungetService(bc.getServiceReference(SessionHandle.class.getName())); > > > st.close(); > > > } > > > > > > private void debug(String msg) { > > > System.out.println("JDBCBundleActivator: " + msg); > > > } > > > > > > } > > > > > > > > > On Sat, Mar 17, 2012 at 8:21 PM, Christian Schneider < > > > [email protected] (mailto:[email protected])> wrote: > > > > > > > You can do the same I do with blueprint with plain java. > > > > > > > > Write a bundle with an Activator that initializes the datasource and > > > > offers it as a service. The problem here is only that you would have > the > > > > > > > > > > db > > > > datasource class hardwired. You can get all other attributes from the > > > > config admin service to make them configurable. > > > > > > > > The other solution is to include blueprint and the felix fileinstall > > > > service in your osgi framework. In that case even the blueprint way > could > > > > work outside Apache Karaf. > > > > > > > > What kind of server are you using btw? > > > > > > > > Christian > > > > > > > > > > > > Am 17.03.2012 12:06, schrieb Peter Penzov: > > > > > > > > > I agree that the legacy approach is not a good solution. Is there > any > > > > > other > > > > > solution without using Apache Karaf for creating datasource > service for > > > > > OSGI bundle? > > > > > > > > > > Best wishes > > > > > Peter > > > > > > > > > > On Fri, Mar 16, 2012 at 12:44 PM, Christian Schneider< > > > > > [email protected] (mailto:[email protected])> wrote: > > > > > > > > > > The best practice is to configure a DataSource outside of the > bundle > > > and > > > > > > offer it as a OSGi service. So the user bundle should just > reference > > > > > > > > > > > > > > > the > > > > > > datasource and use it. The legacy aproach with using a database > driver > > > > > > classname to configure jdbc does not work well in OSGi. > > > > > > > > > > > > I have a tutorial that shows how to do this with Apache Karaf. > This > > > > > > should also be possible with pure felix just perhaps a little > more > > > > > > effort. > > > > > > http://www.liquid-reality.de/****x/LYBk< > > > > > > > > > > > > > > > > > > > > > http://www.liquid-reality.de/**x/LYBk> > > > > > > <http://www.liquid-**reality.de/x/LYBk (http://reality.de/x/LYBk > )< > > > > > > > > > > > > > > > http://www.liquid-reality.de/x/LYBk> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Christian > > > > > > > > > > > > > > > > > > Am 16.03.2012 10:10, schrieb elMateo: > > > > > > > > > > > > Hello all, > > > > > > > > > > > > > I need to connect a bundle to a MySQL data base and I don't > know how I > > > > > > > can > > > > > > > do it. > > > > > > > > > > > > > > I know that I can't do the same that in a normal Java > application, > > > but I > > > > > > > don't find the correct form to do this. > > > > > > > > > > > > > > Could anybody help me? > > > > > > > > > > > > > > Thanks in advance, Jesus > > > > > > > > > > > > > > > > > > > > > -- > > > > > > Christian Schneider > > > > > > http://www.liquid-reality.de > > > > > > > > > > > > Open Source Architect > > > > > > Talend Application Integration Division http://www.talend.com > > > > > > > > > > > > > > > > > > ------------------------------****----------------------------** > > > > > > --**--------- > > > > > > To unsubscribe, e-mail: users-unsubscribe@felix.**apac**he.org ( > http://he.org)< > > > > > > > > > > > > > > > > > > > > > http://apache.org> > > > > > > <users-unsubscribe@**felix.apache.org (http://felix.apache.org)< > > > > > > > > > > > > > > > [email protected] (mailto: > [email protected])> > > > > > > > > > > > > > > > > > > > > > > > > > For additional commands, e-mail: [email protected](mailto: > [email protected]) > > > > > > > > -- > > > > > > > > Christian Schneider > > > > http://www.liquid-reality.de > > > > > > > > Open Source Architect > > > > Talend Application Integration Division http://www.talend.com > > > > > > > > > > > > > ------------------------------**------------------------------**--------- > > > > To unsubscribe, e-mail: users-unsubscribe@felix.**apache.org ( > http://apache.org)< > > > > > > > > > > [email protected] (mailto: > [email protected])> > > > > For additional commands, e-mail: [email protected](mailto: > [email protected]) > > > > > > > > > > > > > > >
