com.dianping.lion.service.impl.SystemSettingServiceImpl.java Source code

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Here is the source code for com.dianping.lion.service.impl.SystemSettingServiceImpl.java

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/**
 * Project: com.dianping.lion.lion-service-0.0.1
 * 
 * File Created at 2012-9-1
 * $Id$
 * 
 * Copyright 2010 dianping.com.
 * All rights reserved.
 *
 * This software is the confidential and proprietary information of
 * Dianping Company. ("Confidential Information").  You shall not
 * disclose such Confidential Information and shall use it only in
 * accordance with the terms of the license agreement you entered into
 * with dianping.com.
 */
package com.dianping.lion.service.impl;

import net.sf.ehcache.Ehcache;
import net.sf.ehcache.Element;

import org.springframework.beans.factory.annotation.Autowired;

import com.dianping.lion.ServiceConstants;
import com.dianping.lion.dao.SystemSettingDao;
import com.dianping.lion.service.SystemSettingService;

/**
 * @author danson.liu
 *
 */
public class SystemSettingServiceImpl implements SystemSettingService {

    @Autowired
    private SystemSettingDao systemSettingDao;

    private Ehcache ehcache;

    @Override
    public String getSetting(String key) {
        Element element = ehcache.get(ServiceConstants.CACHE_SETTING_PREFIX + key);
        if (element == null) {
            String settingVal = systemSettingDao.get(key);
            if (settingVal != null) {
                element = new Element(ServiceConstants.CACHE_SETTING_PREFIX + key, settingVal);
                ehcache.put(element);
            }
        }
        return element != null ? (String) element.getObjectValue() : null;
    }

    @Override
    public void update(String key, String value) {
        systemSettingDao.update(key, value);
        ehcache.remove(ServiceConstants.CACHE_SETTING_PREFIX + key);
    }

    @Override
    public boolean getBool(String key, boolean defaultIfNull) {
        String settingVal = getSetting(key);
        return settingVal != null ? Boolean.parseBoolean(settingVal) : defaultIfNull;
    }

    public void setEhcache(Ehcache ehcache) {
        this.ehcache = ehcache;
    }

}