TimestampConverter.java

package edu.sjtu.infosec.ismp.manager.EM.util;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

import org.apache.commons.beanutils.ConversionException;
import org.apache.commons.lang.StringUtils;

/**
 * TimestampConverter
 */
public class TimestampConverter extends DateConverter {
    
    /**
     * Timestamp FORMAT
     */
    public static final String TS_FORMAT = DateUtil.getDatePattern()
            + " HH:mm:ss.S";

    /**
     * convert the input value to the date object.
     * @param value
     *            input Object 
     * @param type
     *            specified Class 
     * @return Date Object
     */
    protected Object convertToDate(Class type, Object value) {
        DateFormat df = new SimpleDateFormat(TS_FORMAT);
        if (value instanceof String) {
            try {
                if (StringUtils.isEmpty(value.toString())) {
                    return null;
                }

                return df.parse((String) value);
            } catch (Exception pe) {
                throw new ConversionException(
                        "Error converting String to Timestamp");
            }
        }

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

    /**
     * convert the input Date object to the String object.
     * @param value
     *            input Object 
     * @param type
     *            specified Class 
     * @return String Object
     */
    protected Object convertToString(Class type, Object value) {
        DateFormat df = new SimpleDateFormat(TS_FORMAT);
        if (value instanceof Date) {
            try {
                return df.format(value);
            } catch (Exception e) {
                throw new ConversionException(
                        "Error converting Timestamp to String");
            }
        }

        return value.toString();
    }
}