org.apache.hadoop.hbase.coprocessor

Interface CoprocessorHost.ObserverGetter<C,O>

All Superinterfaces:

Function<C,Optional<O>>

Enclosing class:

CoprocessorHost<C extends Coprocessor,E extends CoprocessorEnvironment<C>>

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 CoprocessorHost.ObserverGetter<C,O>
extends Function<C,Optional<O>>

Implementations defined function to get an observer of type O from a coprocessor of type C. Concrete implementations of CoprocessorHost define one getter for each observer they can handle. For e.g. RegionCoprocessorHost will use 3 getters, one for each of RegionObserver, EndpointObserver and BulkLoadObserver. These getters are used by ObserverOperation to get appropriate observer from the coprocessor.

Method Summary

Methods inherited from interface java.util.function.Function

andThen, apply, compose, identity