Uploaded image for project: 'Commons JEXL'
  1. Commons JEXL
  2. JEXL-146

Performance problem in Interpreter.unknownVariable mechanism

    XMLWordPrintableJSON

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.1.1, 3.0
    • Fix Version/s: 3.0
    • Labels:
      None

      Description

      When JEXL is used in non-strict mode it silently ignores unknown variables. However it still constructs a JexlException.Variable exception, even though it doesn't throw it.

      Constructing exceptions in Java is expensive. If you happen to have a situation where unknown variables are common then this becomes a performance problem. It is showing up as an issue in our application.

      Inspecting the source of Interpreter it looks like a similar issue could also occur with a number of the other exceptions. They are always created, even if they are not going to be thrown.

        Attachments

          Activity

            People

            • Assignee:
              Unassigned
              Reporter:
              dmaplesden David Maplesden
            • Votes:
              0 Vote for this issue
              Watchers:
              2 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved: