// Copyright (c) 2003-2012, Jodd Team (jodd.org). All Rights Reserved.
package jodd.typeconverter.impl;
import jodd.datetime.JDateTime;
import jodd.typeconverter.TypeConversionException;
import jodd.typeconverter.TypeConverter;
import jodd.util.StringUtil;
import java.sql.Date;
import java.util.Calendar;
/**
* Converts given object to <code>java.sql.Date</code>.
* Conversion rules:
* <li><code>null</code> value is returned as <code>null</code>
* <li>object of destination type is simply casted
* <li><code>Calendar</code> object is converted
* <li><code>Date</code> object is converted
* <li><code>JDateTime</code> object is converted
* <li><code>Number</code> is used as number of milliseconds
* <li>finally, if string value contains only numbers it is parsed as milliseconds;
* otherwise as JDateTime pattern
*/
public class SqlDateConverter implements TypeConverter<Date> {
public Date convert(Object value) {
if (value == null) {
return null;
}
if (value instanceof Date) {
return (Date) value;
}
if (value instanceof Calendar) {
return new Date(((Calendar)value).getTimeInMillis());
}
if (value instanceof java.util.Date) {
return new Date(((java.util.Date)value).getTime());
}
if (value instanceof JDateTime) {
return ((JDateTime) value).convertToSqlDate();
}
if (value instanceof Number) {
return new Date(((Number) value).longValue());
}
String stringValue = value.toString().trim();
// try yyyy-mm-dd for valueOf
if (StringUtil.containsOnlyDigits(stringValue) == false) {
try {
return Date.valueOf(stringValue);
} catch (IllegalArgumentException iaex) {
throw new TypeConversionException(value, iaex);
}
}
// assume string to be a number
try {
long milliseconds = Long.parseLong(stringValue);
return new Date(milliseconds);
} catch (NumberFormatException nfex) {
throw new TypeConversionException(value, nfex);
}
}
}
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