So something like this:
Injector injector = Guice.createInjector(new AbstractModule()
{
@Override
protected void configure()
{
bind(AppSettingsService.class).toProvider(AppSettingsServiceProvider.class).in(Singleton.class);
}
}, new ExternalDataSourcesModule());
public class ExternalDataSourcesModule
{
@Inject
private AppSettingsService appSettingsService;
@Override
protected void configure()
{
// use appSettingsService to configure rest of this module
}
}
Will AppSettingsService get injected into ExternalDataSourcesModule ?
Thanks,
Warren Bell
On 3/13/12 2:40 PM, Noctarius wrote:
> Hi Warren,
>
> I would use a Provider and inject depending information to that
> provider.
>
> Cheers Noc
>
> Am 13.03.2012 22:27, schrieb Warren:
>> How do I change the following code so that both modules are configured
>> in one injector instead of two?
>>
>> Injector parentInjector = Guice.createInjector(new AbstractModule()
>> {
>>
>> @Override
>> protected void configure()
>> {
>> bind(AppSettingsService.class).in(Singleton.class);
>> }
>>
>> });
>> AppSettingsService appSettingsService =
>> parentInjector.getInstance(AppSettingsService.class);
>> Injector childInjector = parentInjector.createChildInjector(new
>> ExternalDataSourcesModule(appSettingsService));
>>
>>
>> public class ExternalDataSourcesModule
>> {
>>
>> @Override
>> protected void configure()
>> {
>> // use AppSettingsService to configure rest of this module
>> }
>>
>> }
>>
>> AppSettingsService needs to be bound and needs to be used in
>> ExternalDataSourcesModule. I have tried @Provides in
>> ExternalDataSourcesModule and have gotten it to work, but it doesn't
>> feel right having to set-up AppSettingsService as a singleton with
>> getInstance(), plus I would like to inject dependencies into it.
>>
>> public class ExternalDataSourcesModule
>> {
>>
>> @Provides
>> @Singleton
>> AppSettingsService provideAppSettingsService()
>> {
>> return AppSettingsService.getInstance();
>> }
>>
>>
>> @Override
>> protected void configure()
>> {
>> // use AppSettingsService to configure rest of this module
>> AppSettingsService appSettingsService =
>> AppSettingsService.getInstance()
>> }
>>
>> }
>>
>>
>>
>>
>> I would like to do this:
>>
>> Injector injector = Guice.createInjector(new AbstractModule()
>> {
>>
>> @Override
>> protected void configure()
>> {
>> bind(AppSettingsService.class).in(Singleton.class);
>> }
>>
>> }, new ExternalDataSourcesModule());
>>
>> public class ExternalDataSourcesModule
>> {
>>
>> @Inject
>> private AppSettingsService appSettingsService;
>>
>> @Override
>> protected void configure()
>> {
>> // use appSettingsService to configure rest of this module
>> }
>>
>> }
>>
>> I think this is wanting the chicken before the egg. Using a child
>> injector caused other problems, see my previous post.
>>
>> Any help would be appreciated.
>>
>> Thanks,
>>
>> Warren
>>
>
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