Add ResourceResolver.isLive() method
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Key: SLING-1566
URL: https://issues.apache.org/jira/browse/SLING-1566
Project: Sling
Issue Type: Improvement
Components: API, JCR
Affects Versions: JCR Prefs 1.0.0
Reporter: Felix Meschberger
Assignee: Felix Meschberger
Fix For: JCR Resource 2.0.8, API 2.1.0
SLING-1262 added a close() method to the ResourceResolver declaring that an
exception will be thrown if the ResourceResolver is used after it has been
closed.
To be able to check a ResourceResolver in application code, an isLive method
should be added.
In addition, the actual exception being thrown if the ResourceResolver has been
closed should also be logged.
Finally, in the JcrResourceReslver, the live-check is mainly implemented in the
checkClosed() method. Probably this method should not only check the close
state of itself but also, whether the underlying primary session is still
alive. If the ResourceResolver has not been closed yet, but the session has
already been logged out, the JcrResourceResolver may choose to close itself too
(as a side effect). This is to be discussed.
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