Following sample will demonstrate how to access guice dependency annotated with some annotation through direct Guice injector instance.
Bar.java
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import com.google.inject.BindingAnnotation;
@Retention(RetentionPolicy.RUNTIME)
@BindingAnnotation
public @interface Bar {
}
Foo.java
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import com.google.inject.BindingAnnotation;
@Retention(RetentionPolicy.RUNTIME)
@BindingAnnotation
public @interface Foo {
}
TestDepdency.java
public interface TestDepdency {
String getValue();
}
FooTestDependencyImpl.java
public class FooTestDependencyImpl implements TestDepdency {
@Override
public String getValue() {
return "Foo";
}
}
BarTestDependencyImpl.java
public class BarTestDependencyImpl implements TestDepdency {
@Override
public String getValue() {
return "Bar";
}
}
Test.java
import com.google.inject.AbstractModule;
import com.google.inject.Guice;
import com.google.inject.Injector;
import com.google.inject.Key;
public class Test {
public static void main(String[] args) {
Injector injector = Guice.createInjector(new AbstractModule() {
@Override
protected void configure() {
bind(TestDepdency.class).annotatedWith(Foo.class).to(FooTestDependencyImpl.class);
bind(TestDepdency.class).annotatedWith(Bar.class).to(BarTestDependencyImpl.class);
}
});
TestDepdency foo = injector.getInstance(Key.get(TestDepdency.class, Foo.class));
System.out.println(foo.getValue());
TestDepdency bar = injector.getInstance(Key.get(TestDepdency.class, Bar.class));
System.out.println(bar.getValue());
}
}
Final output
Foo
Bar
In the similar way you can retrieve the annotated provider.
