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https://issues.apache.org/jira/browse/JEXL-224?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Henri Biestro resolved JEXL-224.
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Resolution: Fixed
src/main/java/org/apache/commons/jexl3/internal/Interpreter.java
Committed revision 1801956.
> The ability to overload call() operator in customized JexlArithmetic
> implementation
> -----------------------------------------------------------------------------------
>
> Key: JEXL-224
> URL: https://issues.apache.org/jira/browse/JEXL-224
> Project: Commons JEXL
> Issue Type: Improvement
> Affects Versions: 3.1
> Reporter: Dmitri Blinov
> Assignee: Henri Biestro
> Priority: Minor
> Fix For: 3.2
>
>
> As of now there is a possibility to overload some operators and property
> accessors in JexlArithmetic, such as {{[]}}, {{.}} and {{~=}}, which is great
> extension point of Jexl. Suppose I want to implement index-based access to a
> {{j.u.Collection}} instance in a manner that {{a(0)}} would return the first
> element of collection, {{a(1)}} would return the second and so forth. This is
> different from using common access operator {{[]}} in a way that I specify
> not the index key of for example ArrayList, but an ordered index of the
> element. Of course, the is a possibility to introduce some function to this,
> but for the sake of the scripting simplicity I'm looking for the short
> version, like the call operator {{()}}. As of now I can only implement this
> behavior for the classes that are written by me, via adding a call() method
> to class declaration.But in the case of java.util.Collection this is not
> possible. So it would be great if Jexl could allow to overload a call()
> method in JexlArithmetic class in a way the propertyGet/arrayGet methods are
> now can be overloaded.
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