juzu.plugin.binding.Binding Maven / Gradle / Ivy
/*
* Copyright 2013 eXo Platform SAS
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package juzu.plugin.binding;
import juzu.Scope;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* Declares a bean binding, i.e an external bean that is not managed by Juzu. This bean will be managed by the
* dependency injection container.
*
* @author Julien Viet
*/
@Retention(RetentionPolicy.RUNTIME)
@Target({})
public @interface Binding {
/**
* The bean class that will be made available for injection by the container.
*
* @return the bean class
*/
Class value();
/**
* The scope for which the bean will be bound.
*
* @return the bean scope
*/
Scope scope() default Scope.SINGLETON;
/**
* The optional bean implementation class, when this class is provided it should satisfy one condition among those:
*
* - Extend or implement the {@link #value()} bean class
- Implement the {@link javax.inject.Provider}
* interface with a generic type
<T> that must be a sub type of the {@link #value()} class
* - Implement the {@link juzu.inject.ProviderFactory} interface
*
* @return the bean implementation
*/
Class implementation() default Object.class;
}