geronimo-jcdi_2.0_spec/src/main/java/javax/enterprise/event/Observes.java

/*
 * 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
 *
 * 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 javax.enterprise.event;

import static java.lang.annotation.ElementType.PARAMETER;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;

/**
 * <p>Specifies that a method is an observer method and which event should be observed.</p>
 * Sample:
 * <pre>
 * public class UserHandler 
 * {
 *   public void afterUserLogin(@Observes UserLoginEvent userHasLoggedIn) 
 *   {
 *     ...
 *   }
 * }
 * </pre>
 * @version $Rev$ $Date$
 * @see javax.enterprise.inject.spi.ObserverMethod
 */
@Target(PARAMETER)
@Retention(RUNTIME)
@Documented
public @interface Observes
{
    /**Specifies whether or not call observer according to owner bean instace*/
    public Reception notifyObserver() default Reception.ALWAYS;
    
    /**Transaction phase*/
    public TransactionPhase during() default TransactionPhase.IN_PROGRESS;
}