@ImplementedBy. It only works with a single available implementation. You need module definitions and explicit bindings.
On Sun, Sep 26, 2010 at 8:54 PM, Anthony <[email protected]> wrote: > I'm trying to work out the right way to perform the following: > > I have a Manager and ManagerImpl. The ManagerImpl uses a Dao with 2 > possible implementations (JDBCDao and LDAPDao) > > So... > > @ImplementedBy(JDBCDao.class) > public interface Dao { > public String getString(); > } > > public class JDBCDao implements Dao { > public String getString() { > return "JDBC implementation called"; > } > } > > public class LDAPDao implements Dao { > private String mConfig; > > public LDAPDao(String config) { > mConfig = config; > > } > > public String getString() { > return "LDAP impementation called with config ["+mConfig > +"]"); > } > } > > public interface Manager { > public String doDao(); > public void setDao(Dao aDao); > } > > > public class ManagerImpl implements Manager { > @Inject > Dao mDao; > > public String doDao() { > return mDao.getString(); > } > > public void setDao(Dao aDao) { > mDao = aDao; > } > } > > > I'm trying to work out how to properly set this up in my UnitTest to > test it out. I created a DAOFactory like so: > > public interface DAOFactory { > JDBCDao getJDBCDao(); > LDAPDao getLDAPDao(String config); > } > > And a DAOModule: > > public class DAOModule implements Module { > public void configure(Binder binder) { > > > binder.bind(DAOFactory.class).toProvider(FactoryProvider.newFactory(DAOFactory.class, > Dao.class)); > } > } > > And create the following test (in a unit test class): > > DAOModule module = new DAOModule(); > Injector injector = Guice.createInjector(module); > > Provider<DAOFactory> provider = > injector.getProvider(DAOFactory.class); > > Dao aDAO = provider.get().getLDAPDao("config_file.txt"); > > Manager dManager = injector.getInstance(Manager.class); > > dManager.setDAO(aDAO); > System.out.println(dManager.doDao()); > > But I get a ClassCastException on the line: > Dao aDAO = provider.get().getLDAPDao("config_file.txt"); > > What am I doing wrong? > > -- > You received this message because you are subscribed to the Google Groups > "google-guice" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<google-guice%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/google-guice?hl=en. > > -- Yaxin -- You received this message because you are subscribed to the Google Groups "google-guice" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-guice?hl=en.
