// Copyright (c) 2003-2014, Jodd Team (jodd.org). All Rights Reserved.
package jodd.typeconverter.impl;
import jodd.datetime.DateTimeStamp;
import jodd.datetime.JDateTime;
import jodd.datetime.JulianDateStamp;
import jodd.typeconverter.TypeConversionException;
import jodd.typeconverter.TypeConverter;
import jodd.util.StringUtil;
import java.util.Calendar;
import java.util.Date;
/**
* Converts object to {@link JDateTime}.
* Conversion rules:
* <ul>
* <li><code>null</code> value is returned as <code>null</code></li>
* <li>object of destination type is simply casted</li>
* <li><code>Calendar</code> object is converted</li>
* <li><code>Date</code> object is converted</li>
* <li><code>Number</code> is used as number of milliseconds</li>
* <li>finally, if string value contains only numbers it is parsed as milliseconds;
* otherwise as JDateTime pattern</li>
* </ul>
*/
public class JDateTimeConverter implements TypeConverter<JDateTime> {
public JDateTime convert(Object value) {
if (value == null) {
return null;
}
if (value instanceof JDateTime) {
return (JDateTime) value;
}
if (value instanceof Calendar) {
return new JDateTime((Calendar)value);
}
if (value instanceof Date) {
return new JDateTime((Date) value);
}
if (value instanceof Number) {
return new JDateTime(((Number) value).longValue());
}
if (value instanceof JulianDateStamp) {
return new JDateTime((JulianDateStamp) value);
}
if (value instanceof DateTimeStamp) {
return new JDateTime((DateTimeStamp) value);
}
String stringValue = value.toString().trim();
if (StringUtil.containsOnlyDigits(stringValue) == false) {
return new JDateTime(stringValue, JDateTime.DEFAULT_FORMAT);
}
try {
long milliseconds = Long.parseLong(stringValue);
return new JDateTime(milliseconds);
} catch (NumberFormatException nfex) {
throw new TypeConversionException(value, nfex);
}
}
}