Package org.apache.pekko.persistence.query

Interface ReadJournalProvider

All Known Implementing Classes:

LeveldbReadJournalProvider, PersistenceTestKitReadJournalProvider

public interface ReadJournalProvider

A query plugin must implement a class that implements this trait. It provides the concrete implementations for the Java and Scala APIs.

A read journal plugin must provide implementations for both org.apache.pekko.persistence.query.scaladsl.ReadJournal and org.apache.pekko.persistence.query.javadsl.ReadJournal. The plugin must implement both the scaladsl and the javadsl traits because the org.apache.pekko.stream.scaladsl.Source and org.apache.pekko.stream.javadsl.Source are different types and even though those types can easily be converted to each other it is most convenient for the end user to get access to the Java or Scala Source directly. One of the implementations can delegate to the other.

Method Summary

Modifier and Type	Method	Description
ReadJournal	javadslReadJournal()	The ReadJournal implementation for the Java API.
ReadJournal	scaladslReadJournal()	The ReadJournal implementation for the Scala API.

Method Details

javadslReadJournal

ReadJournal javadslReadJournal()

The ReadJournal implementation for the Java API. This corresponds to the instance that is returned by PersistenceQuery.getReadJournalFor(java.lang.Class<T>, java.lang.String, com.typesafe.config.Config).

scaladslReadJournal

ReadJournal scaladslReadJournal()

The ReadJournal implementation for the Scala API. This corresponds to the instance that is returned by PersistenceQuery.readJournalFor(java.lang.String, com.typesafe.config.Config).