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https://issues.apache.org/jira/browse/JEXL-252?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16342246#comment-16342246
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Henri Biestro commented on JEXL-252:
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The idea behind {code:java}x.'y z'{code} syntax is to allow using constant
property names that contain spaces/special characters. The constant part is
important here; we have a syntax when a property is dynamic, the
{code:java}x.[y]{code} notation.
The different access operators overloads allow managing the difference between
{code:java}map.length{code} and {code:java}map['length']{code}.
What you propose is currently solved using {code:java}x.[`y`]{code}.
> Allow for interpolated strings to be used in property access operators
> ----------------------------------------------------------------------
>
> Key: JEXL-252
> URL: https://issues.apache.org/jira/browse/JEXL-252
> Project: Commons JEXL
> Issue Type: New Feature
> Affects Versions: 3.1
> Reporter: Dmitri Blinov
> Priority: Minor
>
> Now we have a possibility to access an object property by specifying either
> {code}object.property{code} or {code}object."property"{code} expression, but
> not {code}object.`property`{code} expression. Since interpolated strings can
> be used anywhere in scripts as ordinal strings, it would be logical to allow
> them to be used in property access operators too. It would allow to have the
> property name not necessarily to be a constant, but to be evaluated without
> using the array access operator, since property access operator and array
> access operator could be implemented (overloaded) differently for the object.
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