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https://issues.apache.org/jira/browse/SLING-6164?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15581760#comment-15581760
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Chetan Mehrotra commented on SLING-6164:
----------------------------------------
Looks fine
{code}
+++
bundles/api/src/main/java/org/apache/sling/spi/resource/provider/ObserverConfiguration.java
(working copy)
@@ -61,6 +61,15 @@
@Nonnull Set<ResourceChange.ChangeType> getChangeTypes();
/**
+ * Set containing the set of property names which
+ * serves as an optional hint for the underlying to
+ * only report property changes enlisted, ie the
+ * underlying might ignore this.
+ * @return set containing the set of property names
+ */
+ @Nonnull Set<String> getPropertyNamesHint();
{code}
In future we might add support for more hints and in such a case adding new
methods here would lead to compatibility issue. Specially when this is an
optional feature. May be we make it bit generic
{code}
enum ObservationHint {PropertyName}
@Nonnull Set<String> getHint(ObservationHint hint);
{code}
wdyt?
> Introduce optional property names hint to ResourceChangeListener
> ----------------------------------------------------------------
>
> Key: SLING-6164
> URL: https://issues.apache.org/jira/browse/SLING-6164
> Project: Sling
> Issue Type: Improvement
> Components: API, JCR
> Affects Versions: JCR Resource 2.8.0, API 2.14.2
> Reporter: Stefan Egli
> Fix For: JCR Resource 2.9.0, API 2.15.0
>
> Attachments: SLING-6164.patch
>
>
> As [discussed on the list|http://sling.markmail.org/thread/usq4a7pglhakd7uq]
> it would be useful to allow resource providers to optionally filter for
> property names for ResourceChangeListeners. We could thus introduce an
> optional _property names hint_ osgi property to the ResourceChangeListener as
> well as the corresponding getter to ObserverConfiguration.
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