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Posted to issues@commons.apache.org by "Henri Biestro (Jira)" <ji...@apache.org> on 2021/06/03 10:53:00 UTC

[jira] [Updated] (JEXL-245) Engine in strict mode fails to fail on unsolvable variables or properties

     [ https://issues.apache.org/jira/browse/JEXL-245?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Henri Biestro updated JEXL-245:
-------------------------------
    Fix Version/s: 3.2

> Engine in strict mode fails to fail on unsolvable variables or properties 
> --------------------------------------------------------------------------
>
>                 Key: JEXL-245
>                 URL: https://issues.apache.org/jira/browse/JEXL-245
>             Project: Commons JEXL
>          Issue Type: Bug
>    Affects Versions: 3.1
>            Reporter: Ate Douma
>            Assignee: Henri Biestro
>            Priority: Major
>             Fix For: 3.2
>
>
> I've run into some unexpected behavior where the expectancy is that the Engine throws a unsolvable property exception.
> Example code:
> {code:java}
> import org.apache.commons.jexl3.*;
> public class JexlTest {
>     public Object getBar() {
>         return null;
>     }
>     private static void testJexl(final JexlEngine engine, final JexlContext ctx, final String expression) {
>         System.out.print("test ("+expression+"): ");
>         try {
>             System.out.println(engine.createExpression(expression).evaluate(ctx));
>         } catch (JexlException e) {
>             System.out.println(e.getMessage());
>         }
>     }
>     public static void main(final String[] args) throws Exception {
>         MapContext ctx = new MapContext();
>         JexlEngine engine = new JexlBuilder().strict(true).silent(false).create();
>         ctx.set("foo", new JexlTest());
>         testJexl(engine, ctx, "foo.bar");
>         testJexl(engine, ctx, "foo.bar.baz");
>         testJexl(engine, ctx, "foo.baz");
>     }
> }{code}
> Which produces the following output:
> {code}
> test (foo.bar): null
> test (foo.bar.baz): null
> test (foo.baz): JexlTest.testJexl@1:4 unsolvable property 'baz'
> {code}
> The problem is with the second test where accessing the property foo.bar.baz of the non-existing variable bar is not throwing an exception.
> The third test demonstrates a similar/same scenario where accessing the non-existing property foo.baz is throwing the expected exception. 



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