org.beangle.commons.converters.SqlDateConverter.java Source code

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Here is the source code for org.beangle.commons.converters.SqlDateConverter.java

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/* Copyright c 2005-2012.
 * Licensed under GNU  LESSER General Public License, Version 3.
 * http://www.gnu.org/licenses
 */
package org.beangle.commons.converters;

import java.sql.Date;

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

/**
 * This class is converts a java.util.Date to a String and a String to a
 * java.util.Date.
 */
public class SqlDateConverter implements Converter {

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

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

    /**
     * ??<br>
     * format 1: yyyy-MM-dd<br>
     * format 2: yyyyMMdd
     * 
     * @param type
     * @param value
     * @return
     */
    protected Object convertToDate(final Object value) {
        if (value instanceof String) {
            if (StringUtils.isEmpty((String) value)) {
                return null;
            } else {
                String dateStr = (String) value;
                if (!StringUtils.contains(dateStr, "-")) {
                    StringBuilder dateBuf = new StringBuilder(dateStr);
                    dateBuf.insert("yyyyMM".length(), '-');
                    dateBuf.insert("yyyy".length(), '-');
                    dateStr = dateBuf.toString();
                }
                return Date.valueOf(dateStr);
            }
        } else if (value instanceof java.util.Date) {
            return new Date(((java.util.Date) value).getTime());
        } else {
            return null;
        }
    }

    protected Object convertToString(Object value) {
        return value.toString();
    }
}