I had a similar. Just
bind(NetworkCommunicator.class)
.toProvider(NetworkCommunicator.class);
Inject all needed information into your provider and let it take the
decision.
On Mon, Sep 8, 2014 at 10:51 PM, tew88 <[email protected]> wrote:
> 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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