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    • io.airlift.jaxrs.JaxrsBinder Maven / Gradle / Ivy

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    package io.airlift.jaxrs;

import com.google.inject.Binder;
import com.google.inject.Key;
import com.google.inject.TypeLiteral;
import com.google.inject.multibindings.Multibinder;

import static com.google.inject.Scopes.SINGLETON;
import static com.google.inject.multibindings.Multibinder.newSetBinder;
import static java.util.Objects.requireNonNull;

public class JaxrsBinder
{
    private final Multibinder resourceBinder;
    private final Multibinder keyBinder;
    private final Binder binder;

    private JaxrsBinder(Binder binder)
    {
        this.binder = requireNonNull(binder, "binder is null").skipSources(getClass());
        this.resourceBinder = newSetBinder(binder, Object.class, JaxrsResource.class).permitDuplicates();
        this.keyBinder = newSetBinder(binder, JaxrsBinding.class, JaxrsResource.class).permitDuplicates();
    }

    public static JaxrsBinder jaxrsBinder(Binder binder)
    {
        return new JaxrsBinder(binder);
    }

    public void bind(Class implementation)
    {
        binder.bind(implementation).in(SINGLETON);
        resourceBinder.addBinding().to(implementation).in(SINGLETON);
        keyBinder.addBinding().toInstance(new JaxrsBinding(Key.get(implementation)));
    }

    public void bind(TypeLiteral implementation)
    {
        binder.bind(implementation).in(SINGLETON);
        resourceBinder.addBinding().to(implementation).in(SINGLETON);
        registerJaxRsBinding(Key.get(implementation));
    }

    public void bind(Key targetKey)
    {
        binder.bind(targetKey).in(SINGLETON);
        resourceBinder.addBinding().to(targetKey).in(SINGLETON);
        registerJaxRsBinding(targetKey);
    }

    public void bindInstance(Object instance)
    {
        resourceBinder.addBinding().toInstance(instance);
    }

    public void registerJaxRsBinding(Key key)
    {
        keyBinder.addBinding().toInstance(new JaxrsBinding(key));
    }
}
    
    
    
    

    




    
    
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