Date returns Date:
	INT "." INT "." INT ;

import java.text.ParseException;
import java.text.SimpleDateFormat;

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 com.google.inject.Singleton;

@Singleton
public class MyDslTerminalConverters extends DefaultTerminalConverters {
	
	@ValueConverter(rule = "Date")
	public IValueConverter<java.sql.Date> Date() {
		return new IValueConverter<java.sql.Date>() {

			@Override
			public java.sql.Date toValue(String string, INode node)
					throws ValueConverterException {
				try {
					return new java.sql.Date(new SimpleDateFormat("dd.MM.yyyy").parse(string).getTime());
				} catch (ParseException e) {
					throw new ValueConverterException("could not parse date", node, e);
				}
			}

			@Override
			public String toString(java.sql.Date value)
					throws ValueConverterException {
				return new SimpleDateFormat("dd.MM.yyyy").format(value);
			}
			
		};
	}

}

public class MyDslRuntimeModule extends org.xtext.example.mydsl3.AbstractMyDslRuntimeModule {

	public Class<? extends org.eclipse.xtext.conversion.IValueConverterService> bindIValueConverterService() {
		return MyDslTerminalConverters.class;
	}
	
}