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Posted to dev@johnzon.apache.org by "Markus Karg (Jira)" <ji...@apache.org> on 2019/09/18 07:05:00 UTC
[jira] [Created] (JOHNZON-276) StackOverflowError in
DefaultPropertyVisibilityStrategy
Markus Karg created JOHNZON-276:
-----------------------------------
Summary: StackOverflowError in DefaultPropertyVisibilityStrategy
Key: JOHNZON-276
URL: https://issues.apache.org/jira/browse/JOHNZON-276
Project: Johnzon
Issue Type: Bug
Components: JSON-B
Affects Versions: 1.2.1
Reporter: Markus Karg
The following code produces a StackOverflowError:
@JsonVisibility(DefaultPropertyVisibilityStrategy.class)
public final class C {
@JsonProperty private boolean foo;
}
The problem is caused by the fact that this strategy tries to compare "this" by "==" with a _new instance_ of itself, which certainly fails, because the new copy is definitively a different reference than the one currently executed and instantiated due to the class annotation.
The fix is simple: Adding an equals method just comparing the class type (as the strategy has no members other than a cache), and calling that instead of "==".
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