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Posted to dev@felix.apache.org by "Andreas Lemmer (JIRA)" <ji...@apache.org> on 2018/12/27 00:40:00 UTC

[jira] [Created] (FELIX-6009) Metatype AD empty String default value

Andreas Lemmer created FELIX-6009:
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             Summary: Metatype AD empty String default value
                 Key: FELIX-6009
                 URL: https://issues.apache.org/jira/browse/FELIX-6009
             Project: Felix
          Issue Type: Bug
          Components: Metatype Service
    Affects Versions: metatype-1.2.2
            Reporter: Andreas Lemmer


I have an AD with a default value which is an empty string, like

{{<AD id="server" type="String" default=""/>}}

According to the OSGi Spec, the method AttributeDefinition.defaultValue() in this case must return an array with one element (which should be the empty string), because the cardinality is 0 (implicit) and the default is defined.

However, the Felix Metatype Service implementation returns null for defaultValue().

In my use case, this breaks everything, because a null value indicates a configuration error (default not given, although mandatory) whereas an empty string is perfectly fine.



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