public static String toPropertyPath(
Expression<?> expr, char propertySeparator, char collectionSeparator) {
Stack<String> results = new Stack<>();
expr.accept(
new PropertyPathExpressionVisitor(
String.valueOf(propertySeparator), String.valueOf(collectionSeparator)),
results);
StringBuilder sb = new StringBuilder();
while (!results.isEmpty()) {
sb.append(results.pop());
}
return StringUtils.stripEnd(
sb.toString(), String.valueOf(propertySeparator) + String.valueOf(collectionSeparator));
}
public Object handle(Expression<?> expression) {
return expression.accept(this, null);
}