cmg.org.monitor.ext.util.DateTimeUtils.java Source code

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Here is the source code for cmg.org.monitor.ext.util.DateTimeUtils.java

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/**
 * Copyright (c) CMG Ltd All rights reserved.
 *
 * This software is the confidential and proprietary information of CMG
 * ("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 CMG.
 */

package cmg.org.monitor.ext.util;

import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.List;
import java.util.Set;

import org.joda.time.DateTime;
import org.joda.time.DateTimeZone;

import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;

import cmg.org.monitor.entity.shared.SystemMonitor;
import cmg.org.monitor.memcache.Key;
import cmg.org.monitor.memcache.MonitorMemcache;
import cmg.org.monitor.util.shared.MonitorConstant;

/**
 * DOCME
 * 
 * @Creator Hai Lu
 * @author $Author$
 * @version $Revision$
 * @Last changed: $LastChangedDate$
 */

public class DateTimeUtils {

    public static String currentZone;

    public static Date convertDateWithZone(Date input) {
        if (currentZone == null) {
            Object obj = MonitorMemcache.get(Key.create(Key.CURRENT_ZONE));
            if (obj != null && obj instanceof String) {
                currentZone = (String) obj;
            } else {
                currentZone = MonitorConstant.DEFAULT_SYSTEM_TIME_ZONE;
            }
        }

        DateTime temp = new DateTime(input);

        return temp.withZone(DateTimeZone.forID(currentZone)).toDate();
    }

    public static String[] listAllTimeZone() {
        Object obj = MonitorMemcache.get(Key.create(Key.LIST_AVAILABLE_TIME_ZONE));
        List<String> list = null;
        Gson gson = new Gson();
        if (obj != null && obj instanceof String) {
            Type type = new TypeToken<Collection<String>>() {
            }.getType();
            list = gson.fromJson(String.valueOf(obj), type);
        } else {
            Set<String> listTemp = DateTimeZone.getAvailableIDs();
            if (listTemp != null && listTemp.size() > 0) {
                list = new ArrayList<String>();
                for (String t : listTemp) {
                    list.add(t);
                }
            }
            MonitorMemcache.put(Key.create(Key.LIST_AVAILABLE_TIME_ZONE), gson.toJson(list));
        }
        if (list != null && !list.isEmpty()) {
            String[] temp = new String[list.size()];
            list.toArray(temp);
            return temp;
        }
        return null;
    }

}