All Known Subinterfaces:

ElasticSearchIndexer, ESClusterIndexQueryService, ESFilesystemIndexQueryService, ESMemoryIndexQueryService, PostgreSQLService, RdfIndexingEngineService, RdfIndexingService, SolrQueryService, SQLIndexingEngineService

All Known Implementing Classes:

ElasticSearchIndexer.Mixin, RdfIndexingService.RdfEntityIndexerMixin, SolrEntityIndexerMixin, SQLStateChangeListener

public interface StateChangeListener