You can use ProvisonListener to intercept the provision (@Provides,
Provider.get, or constructor) of any binding.
sam
On Sun, Apr 24, 2016, 8:16 AM Pablo perez <politr...@gmail.com> wrote:
> thanks for the answer. To make it works I create a Factory class and I
> create the map instance using it, so then is guice which is creating the
> instance therefore I can filter it already.
>
> install(new FactoryModuleBuilder().build(MapFactory.Factory.class));
>
>
> public static class MapFactory<K, V> extends HashMap<String, String> {
>
> public interface Factory {
> MapFactory <String, String> create();
> }
> }
>
>
> MapFactory.Factory mapFactory
>
>
> Map<String, String> map =mapFactory.create();
>
>
> What do you think?. Do you know if there´s a better or standard way to do
> it?
>
> Regards.
>
> El sábado, 23 de abril de 2016, 23:46:48 (UTC+1), scl escribió:
>
>> Yes. Guice can only provide the filter if guice created the instance. It
>> does not work for instances created by your own code or for instances
>> created by providers you have written.
>>
>> Am 24. April 2016 00:30:47 MESZ, schrieb Pablo perez <poli...@gmail.com>:
>>>
>>> So, If I understand what you said, Guice can only provide in the filter
>>> those instance created by itself, like through @injected or created through
>>> Factories.
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> El sábado, 23 de abril de 2016, 21:52:59 (UTC+1), scl escribió:
>>>>
>>>> You canot intercept methods on instances created by a provider. What
>>>> guice does is to create a subclass of the thing you want to to intercept.
>>>> But when you use a provider to create this object you are calling new
>>>> yourself which makes it impossible for guice to sneak in the subclass.
>>>>
>>>> Therefore interception of methods only works on instances created by
>>>> guice (there is no 'new' in your code)
>>>>
>>>> Am 23. April 2016 19:44:05 MESZ, schrieb Pablo perez <poli...@gmail.com
>>>> >:
>>>>>
>>>>> I´m using Guice TypeListener to intercept a map instance generated by
>>>>> a provider.
>>>>>
>>>>> Here the config method where I bind my listener
>>>>>
>>>>> @Overridepublic void addConfig() {
>>>>> MapListener mapListener = new MapListener();
>>>>> requestInjection(mapListener);
>>>>> bindListener(Matchers.any(), mapListener);}
>>>>>
>>>>> This is the map instance created by this provider
>>>>>
>>>>> @Provides
>>>>> Map<String, String> mapTest(){
>>>>> return new HashMap<>();
>>>>> }
>>>>>
>>>>> This is the listener class to detect the map instance
>>>>>
>>>>> public class MapListener implements TypeListener {
>>>>>
>>>>> @Override
>>>>> public <I> void hear(final TypeLiteral<I> typeLiteral,
>>>>> TypeEncounter<I> typeEncounter) {
>>>>> typeEncounter.register((InjectionListener<I>) i -> {
>>>>> if(i.getClass().isAssignableFrom(Map.class)){
>>>>> System.out.println("DI:"+ i.getClass()
>>>>> .getName());
>>>>> //TODO:Logic to modify map
>>>>> }
>>>>> });
>>>>> }}
>>>>>
>>>>> The problem is the Map is never passed to the hear method. Am I doing
>>>>> something wrong?
>>>>>
>>>>> Regards.
>>>>>
>>>>> --
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