Henri Biestro created JEXL-275:
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Summary: Allow safe navigation as option
Key: JEXL-275
URL: https://issues.apache.org/jira/browse/JEXL-275
Project: Commons JEXL
Issue Type: Improvement
Affects Versions: 3.1
Reporter: Henri Biestro
Assignee: Henri Biestro
Fix For: 3.2
WHAT:
The 'safe navigation' operator (?.) - allowing a null property to stop and
return null in a navigation expression - has been introduced. However, in many
occasions, being able to let the '.' and '[...]' operators behave 'safely'
without reverting to the 'lenient' mode would be very convenient.
Moreover, it seems 3.1 already allow 'safe' / silent navigation when calling
methods / functions; fixing this behaviour will break existing scripts.
Explicitly introducing this 'safe' behaviour would mitigate the (3.2) migration
cost greatly.
HOW:
Builder option to set the flag, inject checking the flag when
node.isSafeLhs(...) is used.
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