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package ars.spring.context;

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

/**
 * 基于Spring应用初始化接口抽象实现
 *
 * @author wuyongqiang
 */
public abstract class ApplicationInitializer implements ApplicationListener {
    private boolean initialized;

    /**
     * Spring容器初始化完成后执行方法
     *
     * @param event Spring上下文加载完成事件
     */
    protected abstract void execute(ContextRefreshedEvent event);

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

}