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package ars.spring.context;

import org.springframework.context.ApplicationEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.context.event.ContextClosedEvent;

/**
 * 基于Spring应用销毁抽象实现
 *
 * @author wuyongqiang
 */
public abstract class ApplicationDestroyer implements ApplicationListener {
    private boolean destroied;

    /**
     * Spring容器销毁后执行方法
     *
     * @param event Spring上下文关闭事件
     */
    protected abstract void execute(ContextClosedEvent event);

    @Override
    public void onApplicationEvent(ApplicationEvent event) {
        if (event instanceof ContextClosedEvent && !this.destroied) {
            this.execute((ContextClosedEvent) event);
            this.destroied = true;
        }
    }

}