[jira] [Commented] (JEXL-133) String matching Operator short-hand inspired by CSS3

["Henri Biestro (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/JEXL-133?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13403133#comment-13403133 ] 

Henri Biestro commented on JEXL-133:
------------------------------------

Good idea.
For coherence, it might be better to name them '=^' and '=$' (since the matching operator is '=~').
And generalize the 'start with' and 'ends with' for any ordered sequence (Object[], List<?>...).

The following test (in Jexl3) exhibits the intended behavior on String.
{code}
    public void test133() throws Exception {
        JexlEngine jexl = new Engine();
        JexlScript script;
        Object result;
        script = jexl.createScript("x =^ 'foo'", "x");
        result = script.execute(null, "foobar");
        assertEquals(Boolean.TRUE, result);
        result = script.execute(null, "barfoo");
        assertEquals(Boolean.FALSE, result);
        script = jexl.createScript("x =$ 'foo'", "x");
        result = script.execute(null, "foobar");
        assertEquals(Boolean.FALSE, result);
        result = script.execute(null, "barfoo");
        assertEquals(Boolean.TRUE, result);
    }
{code}
                
> String matching Operator short-hand inspired by CSS3
> ----------------------------------------------------
>
>                 Key: JEXL-133
>                 URL: https://issues.apache.org/jira/browse/JEXL-133
>             Project: Commons JEXL
>          Issue Type: Improvement
>    Affects Versions: 2.1.1
>            Reporter: Alfred Reibenschuh
>            Assignee: Henri Biestro
>            Priority: Trivial
>             Fix For: 3.0
>
>
> like the perl inspired shorthand "=~", css3 also has some nice shorthands 
> http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#attribute-selectors
> for "startsWith" the shorthand could be "expr1 ^= expr2"
> for "endsWith" the shorthand could be "expr1 $= expr2"
> it could be that the "^=" operator already collides with "xor and assign" which i haven't looked at as of now.

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