Hi,
An approximation of my problem as follows:
Based upon a value that I will parse from an incoming request, I wish to
inject one of two implementations of my interface. Where is this logic
best placed?
More specifically:
public interface NetworkCommunicator {
public void sendCommandToNetwork(Command command, NetworkElement
recipient);
}
--
public class OldNetworkCommunicatorImpl implements NetworkCommunicator {
@Override
public void sendCommandToNetwork(Command command, NetworkElement
recipient) {
...
}
}
--
public class NewNetworkCommunicatorImpl implements NetworkCommunicator {
@Override
public void sendCommandToNetwork(Command command, NetworkElement
recipient) {
...
}
}
--
public class NetworkCommandIssuer {
private final NetworkCommunicator networkCommunicator;
@Inject
public NetworkCommandIssuer(final NetworkCommunicator
networkCommunicator) {
this.networkCommunicator = networkCommunicator;
}
}
--
Based on some arbitrary mapping, I'd like to wire up my
NetworkCommandIssuer to use my NewNetworkCommunicatorImpl implementation
instead of my OldNetworkCommunicatorImpl implementation. This will change
from request to request. So, where should I define this behaviour?
I'm new to Guice and DI in general, so please assume as little as possible
in your responses!
Thanks in advance,
tew88
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