String result = null;
ExpressionParser expressionParser = ExpressionParser.getInstance();
try {
EvaluableExpression expression = (EvaluableExpression) expressionParser.parse(expressionString);
ExpressionQueryRequest expressionQueryRequest = new ExpressionQueryRequest(
new PropertyResolver(resolvable), new HashMap<Object, Object>(0));
result = (String) expression.evaluate(expressionQueryRequest, ExpressionEvaluator.OBJECTTYPE_STRING);
} catch (ExpressionParserException e) {
LOGGER.error("Error while evaluating the expression (" + expressionString + ") with the base resolvable ("
+ resolvable + ")", e);
} catch (ParserException e) {