FSDLValueConverter.java

package gr.upatras.ece.nam.fsdl.valueconverter;

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

import org.eclipse.xtext.common.services.DefaultTerminalConverters;
import org.eclipse.xtext.conversion.IValueConverter;
import org.eclipse.xtext.conversion.ValueConverter;
import org.eclipse.xtext.conversion.ValueConverterException;
import org.eclipse.xtext.nodemodel.INode;
import org.eclipse.xtext.util.Strings;

public class FSDLValueConverter extends DefaultTerminalConverters{ 
	@ValueConverter(rule = "EDate")
    public IValueConverter<Date> EDate() {
        return new IValueConverter<Date>() {
            public Date toValue(String string, INode node) throws ValueConverterException{
            	DateFormat sdf = new SimpleDateFormat("dd/MM/yyyy HH:mm:ss"); 
            	Date dateNow = new Date ();
            	string = string.replace("\"", "");
                if (Strings.isEmpty(string))
                    throw new ValueConverterException("Couldn't convert empty string to Date", node, null);
                else if ("now".equals(string.trim()))
                    return  dateNow;
                try {
                	//System.out.println("MyVTDLValueConverter.toValue() in return! ="+ sdf.parse(string));
                    return  sdf.parse(string) ;
                } catch (ParseException e) {
                	//System.out.println("MyVTDLValueConverter.toValue() in return ParseException! ");
                    throw new ValueConverterException("Couldn't convert '"+string+"' to Date", node, e);
                }
            }

            public String toString(Date value) {
            	//System.out.println("MyVTDLValueConverter.toString()= "+value);
            	DateFormat sdf = new SimpleDateFormat("dd/MM/yyyy HH:mm:ss"); 
                return   sdf.format (value) ;
            }

			
            

			
        };
	}
}