DateTimeFormatterWrapper.java

/*
 * GovWay - A customizable API Gateway 
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 * 
 * 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/>.
 *
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package org.openspcoop2.utils.date;

import java.text.FieldPosition;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.TimeZone;

/**
 * DateTimeFormatterWrapper
 *
 * @author Poli Andrea (apoli@link.it)
 * @author $Author$
 * @version $Rev$, $Date$
 */
public class DateTimeFormatterWrapper extends SimpleDateFormat {

    /**
     * 
     */
    private static final long serialVersionUID = 1L;
    
    private DateType dataType;
    private String format;
    private boolean timeZone;

    public DateTimeFormatterWrapper(DateType dataType, String format, boolean timeZone) {
        this.dataType = dataType;
        this.format = format;
        this.timeZone = timeZone;
    }
    
    private TimeZone zone;
    @Override
    public void setTimeZone(TimeZone zone) {
        this.zone = zone;
    }
    
    @Override
    public Date parse(String source) throws ParseException {
        
        try {
            switch (this.dataType) {
            case JAVA_UTIL_DATE:
            case JAVA_UTIL_DATE_TIME:
            case JAVA_UTIL_TIME:
                SimpleDateFormat sdf =  new SimpleDateFormat (this.format); // SimpleDateFormat non e' thread-safe
                if(this.timeZone) {
                    sdf.setCalendar(Calendar.getInstance());
                }
                else if(this.zone!=null) {
                    sdf.setTimeZone(this.zone);
                }
                return sdf.parse(source);
                
            case JAVA_TIME_DATE:
                return DateUtils.convertToDateViaInstant( DateUtils.parseToLocalDate(this.format, source) );
            case JAVA_TIME_DATE_TIME:
                return DateUtils.convertToDateViaInstant( DateUtils.parseToLocalDateTime(this.format, source) );
            case JAVA_TIME_TIME:
                return DateUtils.convertToDateViaInstant( DateUtils.parseToLocalTime(this.format, source) );
            
            case JODA_DATE:
            case JODA_DATE_TIME:
            case JODA_TIME:
                return DateUtils.convertToDate(DateUtils.parseToJodaDateTime(this.format, source));
                
            }
        }catch(Exception e) {
            throw new RuntimeException("["+this.dataType+"] "+e.getMessage(),e);
        }
        
        throw new RuntimeException("["+this.dataType+"] unsupported");
    }

    @Override
    public StringBuffer format(Date date, StringBuffer toAppendTo, FieldPosition pos) {
        
        try {
            switch (this.dataType) {
            case JAVA_UTIL_DATE:
            case JAVA_UTIL_DATE_TIME:
            case JAVA_UTIL_TIME:
                SimpleDateFormat sdf =  new SimpleDateFormat (this.format); // SimpleDateFormat non e' thread-safe
                if(this.timeZone) {
                    sdf.setCalendar(Calendar.getInstance());
                }
                else if(this.zone!=null) {
                    sdf.setTimeZone(this.zone);
                }
                toAppendTo.append(sdf.format(date));
                return toAppendTo;
                
            case JAVA_TIME_DATE:
            case JAVA_TIME_DATE_TIME:
            case JAVA_TIME_TIME:
                toAppendTo.append(DateUtils.getDateTimeFormatter(this.format).format(DateUtils.convertToZonedDateTimeViaInstant(date)));
                return toAppendTo;
            
            case JODA_DATE:
            case JODA_DATE_TIME:
            case JODA_TIME:
                toAppendTo.append(DateUtils.convertToJodaDateTime(date).toString(DateUtils.getJodaDateTimeFormatter(this.format)));
                return toAppendTo;
            }
        }catch(Exception e) {
            throw new RuntimeException("["+this.dataType+"] "+e.getMessage(),e);
        }
        
        throw new RuntimeException("["+this.dataType+"] unsupported");
    }
    
}