org.apache.solr.common.cloud

Interface CloudCollectionsListener

public interface CloudCollectionsListener

Callback registered with ZkStateReader.registerCloudCollectionsListener(CloudCollectionsListener) and called whenever the cloud's set of collections changes.

Method Summary

Modifier and Type	Method and Description
void	onChange(Set<String> oldCollections, Set<String> newCollections) Called when a collection is created, a collection is deleted or a watched collection's state changes.

Method Detail

onChange

void onChange(Set<String> oldCollections,
              Set<String> newCollections)

Called when a collection is created, a collection is deleted or a watched collection's state changes. Note that, due to the way Zookeeper watchers are implemented, a single call may be the result of multiple or no collection creation or deletions. Also, multiple calls to this method can be made with the same set of collections, ie. without any new updates.

Parameters:

oldCollections - the previous set of collections

newCollections - the new set of collections