/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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 org.apache.aries.blueprint.annotation.referencelistener;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* Annotating any class with this will create a
* reference or referenclist element in blueprint
* with annotated bean as reference-listener.
*/
@Target({ElementType.TYPE, ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
public @interface ReferenceListener {
/**
* @return interface class of referenced service
*/
Class<?> referenceInterface();
/**
* @return filter on reference or reference-list
*/
String filter() default "";
/**
* @return component-name on reference or reference-list
*/
String componentName() default "";
/**
* @return if existence of at least one service is necessary
*/
Availability availability() default Availability.OPTIONAL;
/**
* @return id of reference or reference-list
*/
String referenceName() default "";
/**
* @return should generate reference or reference-list
*/
Cardinality cardinality() default Cardinality.MULTIPLE;
/**
* @return bind method of reference-listener
* if not provided then method annotated with {{@link Bind}}
* will be found and used
*/
String bindMethod() default "";
/**
* @return unbind method of reference-listener
* if not provided then method annotated with {{@link Unbind}}
* will be found and used
*/
String unbindMethod() default "";
}