[JEXL-304] Error parsing overview.limit.var

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.1
• Fix Version/s: 3.2
• Assignee: Henri Biestro
• Reporter: Marcus Warm
• Created: 21/May/19 08:07
• Updated: 07/Jun/21 13:14
• Resolved: 23/May/19 14:33

Description

I'm a user and committer of the JXLS framework. It uses JEXL to evaluate expressions. Since JEXL 3 it's not possible to evaluate "overview.limit.var". It was possible in V2. In our context "var" means "Value At Risk". I know "var" is a reserved word in JEXL. But in this "dotted-variables" context I think JEXL should try to use it as a variable, because it makes no sense as a var (=define variable) command.

 

public void testVar() {
  JexlEngine jexlEngine = new JexlBuilder().strict(false).create();
  JexlExpression jexlExpresssion =
      jexlEngine.createExpression("overview.limit.var");

  HashMap map3 = new HashMap();
  map3.put("var", "4711");
  HashMap map2 = new HashMap();
  map2.put("limit", map3);
  HashMap map = new HashMap();
  map.put("overview", map2);

  MapContext context = new MapContext(map);
  Object value = jexlExpresssion.evaluate(context);
  assertEquals("4711", value); // fails
}

Error message:

org.apache.commons.jexl3.JexlException$Parsing: de.xmap.tools.jexl.JEXL3VariableTest.testVar@1:15 parsing error in '.'
  at org.apache.commons.jexl3.JexlEngine.createExpression(JexlEngine.java:304)
  at de.xmap.tools.jexl.JEXL3VariableTest.testVar(JEXL3VariableTest.java:107)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)