DateManager.java

/*
 * GovWay - A customizable API Gateway 
 * https://govway.org
 * 
 * Copyright (c) 2005-2025 Link.it srl (https://link.it). 
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3, as published by
 * the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */



package org.openspcoop2.utils.date;

import java.sql.Timestamp;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.Properties;


import org.slf4j.Logger;
import org.openspcoop2.utils.LoggerWrapperFactory;
import org.openspcoop2.utils.UtilsException;
import org.openspcoop2.utils.resources.Loader;


/**
 * Classe per la produzione di date utilizzando
 *
 * @author Poli Andrea (apoli@link.it)
 * @author $Author$
 * @version $Rev$, $Date$
 */
public class DateManager {

    /** Istanza */
    private static IDate dataManager;
    /** Logger */
    private static Logger log;
    
    /**
     * Inizializzazione DataManager
     * 
     */
    public static synchronized void initializeDataManager(String className,java.util.Properties properties,Logger log)throws UtilsException{
        
        if(DateManager.dataManager==null){
            try{
                if(log!=null)
                    DateManager.log = log;
                else
                    DateManager.log = LoggerWrapperFactory.getLogger(DateManager.class);
                DateManager.dataManager = (IDate) Loader.getInstance().newInstance(className);
                DateManager.dataManager.init(properties);
            }catch(Exception e){
                throw new UtilsException("Riscontrato errore durante il caricamento del data manager specificato [class:"+className+"]: "+e.getMessage(),e);
            }
        }
    }
    
    /**
     * Close il DataManager
     * 
     * @throws UtilsException
     */
    public static void close() {
        if(DateManager.dataManager!=null){
            try{
                DateManager.dataManager.close();
            }catch(Exception e){
                DateManager.log.error("Riscontrato errore durante la chiusura del data manager: "+e.getMessage(),e);
            }
        }
    }
    
    
    
    /**
     * Ritorna la data corrente.
     * 
     * @return Data corrente
     */
    public static Date getDate() {
        try{
            if(DateManager.dataManager==null){
                Logger log = LoggerWrapperFactory.getLogger(DateManager.class);
                log.warn("DateManager non inizializzato");
                DateManager.initializeDataManager("org.openspcoop2.utils.date.SystemDate", new Properties(), log);
            }
            return DateManager.dataManager.getDate();
        }catch(Exception e){
            DateManager.log.error("DateManager.getDate() non riuscita",e);
            return new java.util.Date();
        }
    }
    
    /**
     * Ritorna la data corrente in millisecondi da Gennaio 1.4970.
     * 
     * @return Data corrente
     */
    public static long getTimeMillis() {
        try{
            if(DateManager.dataManager==null){
                Logger log = LoggerWrapperFactory.getLogger(DateManager.class);
                log.warn("DateManager non inizializzato");
                DateManager.initializeDataManager("org.openspcoop2.utils.date.SystemDate", new Properties(), log);
            }
            return DateManager.dataManager.getTimeMillis();
        }catch(Exception e){
            DateManager.log.error("DateManager.getTimeMillis() non riuscita",e);
            return new java.util.Date().getTime();
        }
    }
    
    /**
     * Ritorna la data corrente come timestamp SQL.
     * 
     * @return Data corrente
     */
    public static Timestamp getTimestamp() {
        try{
            if(DateManager.dataManager==null){
                Logger log = LoggerWrapperFactory.getLogger(DateManager.class);
                log.warn("DateManager non inizializzato");
                DateManager.initializeDataManager("org.openspcoop2.utils.date.SystemDate", new Properties(), log);
            }
            return DateManager.dataManager.getTimestamp();
        }catch(Exception e){
            DateManager.log.error("DateManager.getTimestamp() non riuscita",e);
            return new Timestamp(new java.util.Date().getTime());
        }
    }
    
    /**
     * Ritorna la data corrente come Calendar
     * 
     * @return Data corrente
     */
    public static Calendar getCalendar() throws UtilsException{
        try{
            if(DateManager.dataManager==null){
                Logger log = LoggerWrapperFactory.getLogger(DateManager.class);
                log.warn("DateManager non inizializzato");
                DateManager.initializeDataManager("org.openspcoop2.utils.date.SystemDate", new Properties(), log);
            }
            return DateManager.dataManager.getCalendar();
        }catch(Exception e){
            DateManager.log.error("DateManager.getCalendar() non riuscita",e);
            Calendar c = new GregorianCalendar();
            c.setTime(new java.util.Date());
            return c;
        }
    }
}