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import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Properties;
import org.exolab.castor.mapping.GeneralizedFieldHandler;
import org.exolab.castor.mapping.ValidityException;
public class CustomDateFieldHandler extends GeneralizedFieldHandler {
private SimpleDateFormat formatter;
public CustomDateFieldHandler() {
//
}
public Object convertUponGet(Object value) {
if (value == null) return null;
Date date = (Date)value;
return formatter.format(date);
}
public Object convertUponSet(Object value) {
Date date = null;
try {
date = formatter.parse((String)value);
}
catch(ParseException px) {
throw new IllegalArgumentException(px.getMessage());
}
return date;
}
public Class getFieldType() {
return Date.class;
}
public Object newInstance( Object parent )
throws IllegalStateException
{
//-- Since it's marked as a string...just return null,
//-- it's not needed.
return null;
}
public void setConfiguration(Properties config) throws ValidityException {
String pattern = config.getProperty("date-format");
if (pattern == null) {
throw new ValidityException("Required parameter \"date-format\" is missing for CustomDateFieldHandler.");
}
try {
formatter = new SimpleDateFormat(pattern);
} catch (IllegalArgumentException e) {
throw new ValidityException("Pattern \""+pattern+"\" is not a valid date format.");
}
}
}
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