angela created OAK-598:
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Summary: TreeLocation#NULL allows to reveal the existence of items
that are not accessible
Key: OAK-598
URL: https://issues.apache.org/jira/browse/OAK-598
Project: Jackrabbit Oak
Issue Type: Bug
Components: core, jcr
Reporter: angela
the javadoc of TreeLocation#NULL states:
{quote}
This {@code TreeLocation} refers to an invalid location in a tree. That is
to a location where no item resides.
{quote}
while api consumers are not allowed to access items they are not allowed
to read, the NULL location allows to determine if a given item does really
not exist or was simply not accessible to the editing content session.
IMO this should be fixed by not exposing the NULL implementation and
making sure oak-jcr doesn't need it. maybe adding a shortcut method to
test the underlying item is not null (e.g. exists()).
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