* functions can be registered.
*/
public class DefaultExpressionManager implements ExpressionManager, ThreadSafe {
public Expression parse(String expressionString) throws ParseException, ExpressionException
{
FormulaParser parser = new FormulaParser(new java.io.StringReader(expressionString)); //, functionFactory);
parser.sum();
Expression expression = parser.getExpression();
expression.check();
return expression;
}