/*
* 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 org.superbiz.schedule.events;
import javax.annotation.Resource;
import javax.ejb.Lock;
import javax.ejb.LockType;
import javax.ejb.ScheduleExpression;
import javax.ejb.Singleton;
import javax.ejb.Timeout;
import javax.ejb.Timer;
import javax.ejb.TimerConfig;
import javax.ejb.TimerService;
import javax.enterprise.inject.spi.BeanManager;
import java.io.Serializable;
import java.lang.annotation.Annotation;
/**
* @version $Revision$ $Date$
*/
@Singleton
@Lock(LockType.READ)
public class Scheduler {
@Resource
private TimerService timerService;
@Resource
private BeanManager beanManager;
public void scheduleEvent(ScheduleExpression schedule, Object event, Annotation... qualifiers) {
timerService.createCalendarTimer(schedule, new TimerConfig(new EventConfig(event, qualifiers), false));
}
@Timeout
private void timeout(Timer timer) {
final EventConfig config = (EventConfig) timer.getInfo();
beanManager.fireEvent(config.getEvent(), config.getQualifiers());
}
// Doesn't actually need to be serializable, just has to implement it
private final class EventConfig implements Serializable {
private final Object event;
private final Annotation[] qualifiers;
private EventConfig(Object event, Annotation[] qualifiers) {
this.event = event;
this.qualifiers = qualifiers;
}
public Object getEvent() {
return event;
}
public Annotation[] getQualifiers() {
return qualifiers;
}
}
}