org.beanfuse.bean.converters.DateConverter.java Source code

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Here is the source code for org.beanfuse.bean.converters.DateConverter.java

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/*
 *
 * Copyright c 2005-2009.
 * 
 * Licensed under GNU  LESSER General Public License, Version 3.  
 * http://www.gnu.org/licenses
 * 
 */
/********************************************************************************
 * @author chaostone
 * 
 * MODIFICATION DESCRIPTION
 * 
 * Name                 Date                Description 
 * ============         ============        ============
 * chaostone             2007-1-2            Created
 *  
 ********************************************************************************/
package org.beanfuse.bean.converters;

import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

import org.apache.commons.beanutils.ConversionException;
import org.apache.commons.beanutils.Converter;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang.math.NumberUtils;

public class DateConverter implements Converter {

    public Object convert(final Class type, final Object value) {
        if (value == null) {
            return null;
        } else if (type == Date.class) {
            return convertToDate(type, value);
        } else if (type == String.class) {
            return convertToString(type, value);
        }

        throw new ConversionException("Could not convert " + value.getClass().getName() + " to " + type.getName());
    }

    // FIXME
    /**
     * ?<br>
     * format 1: yyyy-MM-dd hh:mm:ss<br>
     * format 2: yyyyMMdd
     */
    protected Object convertToDate(final Class type, final Object value) {
        if (StringUtils.isEmpty((String) value)) {
            return null;
        } else {
            String dateStr = (String) value;
            String[] times = StringUtils.split(dateStr, " ");
            String[] dateElems = null;
            if (StringUtils.contains(times[0], "-")) {
                dateElems = StringUtils.split(times[0], "-");
            } else {
                dateElems = new String[3];
                int yearIndex = "yyyy".length();
                dateElems[0] = StringUtils.substring(times[0], 0, yearIndex);
                dateElems[1] = StringUtils.substring(times[0], yearIndex, yearIndex + 2);
                dateElems[2] = StringUtils.substring(times[0], yearIndex + 2, yearIndex + 4);
            }
            Calendar gc = GregorianCalendar.getInstance();
            gc.set(Calendar.YEAR, NumberUtils.toInt(dateElems[0]));
            gc.set(Calendar.MONTH, NumberUtils.toInt(dateElems[1]) - 1);
            gc.set(Calendar.DAY_OF_MONTH, NumberUtils.toInt(dateElems[2]));
            if (times.length > 1 && StringUtils.isNotBlank(times[1])) {
                String[] timeElems = StringUtils.split(times[1], ":");
                if (timeElems.length > 0) {
                    gc.set(Calendar.HOUR_OF_DAY, NumberUtils.toInt(timeElems[0]));
                }
                if (timeElems.length > 1) {
                    gc.set(Calendar.MINUTE, NumberUtils.toInt(timeElems[1]));
                }
                if (timeElems.length > 2) {
                    gc.set(Calendar.SECOND, NumberUtils.toInt(timeElems[2]));
                }
            }
            return gc.getTime();
        }
    }

    protected Object convertToString(final Class type, final Object value) {
        return value.toString();
    }

}