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package org.jooby;

import com.google.inject.Key;

import com.google.inject.TypeLiteral;

import com.google.inject.name.Names;

import javax.annotation.Nonnull;

/**

* <h1>service registry</h1>

* <p>

* Provides access to services registered by modules or application. The registry is powered by

* Guice.

* </p>

*

* @author edgar

* @since 1.0.0.CR3

*/

public interface Registry {

/**

* Request a service of the given type.

*

* @param type A service type.

* @param <T> Service type.

* @return A ready to use object.

*/

@Nonnull

default <T> T require(final Class<T> type) {

return require(Key.get(type));

}

/**

* Request a service of the given type and name.

*

* @param name A service name.

* @param type A service type.

* @param <T> Service type.

* @return A ready to use object.

*/

@Nonnull

default <T> T require(final String name, final Class<T> type) {

return require(Key.get(type, Names.named(name)));

}

/**

* Request a service of the given type.

*

* @param type A service type.

* @param <T> Service type.

* @return A ready to use object.

*/

@Nonnull

default <T> T require(final TypeLiteral<T> type) {

return require(Key.get(type));

}

/**

* Request a service of the given key.

*

* @param key A service key.

* @param <T> Service type.

* @return A ready to use object.

*/

@Nonnull

<T> T require(Key<T> key);

}