org.apache.sling.spi.resource.provider

Interface ObserverConfiguration

@ProviderType
public interface ObserverConfiguration

A observer configuration describes active configurations from registered listeners. All implementations of ObserverConfiguration are comparable using the Object.equals(Object) method. Two configurations are equal, if they have exactly the same parameters. A resource provider implementation observation must support sending remove events as explained in ResourceChangeListener. If an observer configuration contains a pattern or is limited to a sub tree, removal events not matching the pattern or removing events of parents of that sub tree must be provided to the listener nevertheless - if the listener is interested in resource remove events.

Since:

1.0.0 (Sling API Bundle 2.11.0)

Method Summary

Modifier and Type	Method and Description
java.util.Set<ResourceChange.ChangeType>	getChangeTypes() The set of types listeners are interested in.
PathSet	getExcludedPaths() The set of excluded paths.
PathSet	getPaths() The set of paths this listener is interested in.
java.util.Set<java.lang.String>	getPropertyNamesHint() 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.
boolean	includeExternal() true if a listener is interested in external events.
boolean	matches(java.lang.String path) Checks whether a path matches one of the paths of this configuration but is not in the excluded paths set.

Method Detail

includeExternal

boolean includeExternal()

true if a listener is interested in external events.

Returns:

true if a listener is interested in external events.

getPaths

@Nonnull
PathSet getPaths()

The set of paths this listener is interested in. Each entry is absolute.

Returns:

Non empty set of paths

getExcludedPaths

@Nonnull
PathSet getExcludedPaths()

The set of excluded paths. All the paths are sub paths from one entry of getPaths()

Returns:

A set of excluded paths, might be empty.

getChangeTypes

@Nonnull
java.util.Set<ResourceChange.ChangeType> getChangeTypes()

The set of types listeners are interested in.

Returns:

Non empty set of types

getPropertyNamesHint

@Nonnull
java.util.Set<java.lang.String> getPropertyNamesHint()

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.

Returns:

Set containing the set of property names or null

matches

boolean matches(java.lang.String path)

Checks whether a path matches one of the paths of this configuration but is not in the excluded paths set.

Parameters:

path - The path to check

Returns:

true if the path matches the configuration.