How to open and close a session properly to avoid memory leaks?
Session session = repository.login(credentials);
What should I use to check if an Item exists before getting the Value?
Does it make sense to have all the nodes referable to use
Until it is applicable for a business logic, it can be. But take into account the paths are human readable and let you think in hierarchy. If it is important, a location based approach is preferable.
Is it better to use
How to use Observation properly?
JCR Observation is a way to listen on persistence changes of a
Repository. It provides several options to configure the listener for
interesting changes only. To use properly, it is important to
understand concept of events filtering for a registered EventListener
(8.3.3 Observation Manager). An often confusing part, it is the
absPath, it is an associated parent of
a location you want to observe events on. For example, it is a parent of child
node(s) or this parent property(ies); if
is true, then you will get events of all
the subtree of child nodes also. The same actual for
What is default query ordering?
By default, (if query does not contain any ordering statements) result nodes are sorted by document order.
How does eXo JCR indexer use content encoding?
1. Indexer uses the
2. If no
3. If nothing is configured a JVM, the default encoding will be used.
Can I use Session after logging out?
No. Any instance of Session or Node (acquired through session) should not be used after logging out anymore. At least, it is highly recommended not to use.