Conversor de booleano.

BooleanConverter.java

import org.eclipse.persistence.mappings.DatabaseMapping;
import org.eclipse.persistence.mappings.converters.Converter;
import org.eclipse.persistence.sessions.Session;

public class BooleanConverter implements Converter {

    private static final long serialVersionUID = -8002966734017614459L;

	@Override
	public Object convertDataValueToObjectValue(Object arg0, Session arg1) {
		System.out.println("converting from data to object: " + arg0);
		String data = (String) arg0;
		return data.equals("S");
	}

	@Override
	public Object convertObjectValueToDataValue(Object arg0, Session arg1) {
		System.out.println("converting from object to data: " + arg0);
		Boolean obj = (Boolean) arg0;
		return obj ? "S" : "N";
	}

	@Override
	public void initialize(DatabaseMapping arg0, Session arg1) {
	}

	@Override
	public boolean isMutable() {
		return true;
	}

}