Details
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Improvement
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Status: Closed
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Minor
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Resolution: Fixed
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3.5.0
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None
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None
Description
There are plenty of places where empty collections are returned from public API in methods written like:
public List<Exception> getExceptions() { return exceptions == null ? Collections.<Exception>emptyList() : exceptions; }
The issue with this is that the empty list is immutable but the collection returned for the nun-null case is not immutable.
All those methods should return a collection with consistent "mutability": either mutable, either immutable.
Given empty immutable collections do not cause harm until now, switching consistently to immutable collections is more conservative and should not be risky
