Package io.pravega.client.state

Interface StateSynchronizer.UpdateGeneratorFunction<StateT extends Revisioned,ReturnT>

Type Parameters:

StateT - The type of state it generates updates for.

ReturnT - The type of the result returned.

All Superinterfaces:

java.util.function.BiFunction<StateT,java.util.List<Update<StateT>>,ReturnT>

Enclosing interface:

StateSynchronizer<StateT extends Revisioned>

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public static interface StateSynchronizer.UpdateGeneratorFunction<StateT extends Revisioned,ReturnT>
extends java.util.function.BiFunction<StateT,java.util.List<Update<StateT>>,ReturnT>

Similar to StateSynchronizer.UpdateGenerator but it also returns a result for the caller. For example:

 boolean updated = stateSynchronizer.updateState((state, updates) -> {

      if (!shouldUpdate(state)) {
          return false;
      }
      updates.addAll(findUpdatesForState(state));
      return true;
 });
 

Method Summary

Methods inherited from interface java.util.function.BiFunction

andThen, apply