I agree with you JP , it would be very difficult to accomodate if there
are hundred implementations , Please post me if you find any solution, iam
in need of the code urgently :-)
Thanks SCL, i have question
I guess OrganizationServiceProvider should implement Provider in the below
code?
On Wednesday, February 26, 2014 11:38:57 AM UTC, Juan Pablo Vergara
Villarraga wrote:
>
> I understand the solution from scl as a container for all the possible
> implementations of the dependency to be injected. It looks like a practical
> solution when there are few implementations. Would it be an elegant
> solution if we have a hundred implementations or so?
>
> Im currently coding a solution for this problem as well. If I find a
> different solution I'll post it :)
>
> JP
>
> El martes, 25 de febrero de 2014 03:06:34 UTC-5, scl escribió:
>>
>> public class OrganizationServiceProvider {
>>
>> private final OrganizationServiceImpl orgService;
>> private final OrgDeatilsServiceImpl orgDetailService;
>>
>> @Inject
>> OrganizationServiceProvider(final OrganizationServiceImpl
>> orgService, final OrgDeatilsServiceImpl orgDetailService) {
>> this.orgService = orgService;
>> this.orgDetailService = orgDetailService;
>> }
>>
>> public OrganizationService getServiceFor(/* you must pass the the
>> necessary input to decide which impl to choose */) {
>> // your code goes here. it must return either orgService or
>> orgDetailService
>> }
>> }
>>
>> public class OrganizationsResource {
>>
>> private final OrganizationServiceProvider osProvider;
>>
>> @Inject
>> OrganizationsResource(final OrganizationServiceProvider osProvider)
>> {
>> this.osProvider = osProvider;
>> }
>>
>> // more code...
>> }
>>
>> There is no special binding in the Guice module necessary since all
>> injections go to concrete classes.
>> Of course it would be nice to introduce an interface for
>> OrganizationServiceProvider and have an OrganizationServiceProviderImpl.
>> In this case you would need to bind the impl to the interface.
>>
>
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