org.apache.sshd.common.util

Interface Invoker<ARG,RET>

Type Parameters:

ARG - Argument type

RET - Return type

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 interface Invoker<ARG,RET>

The complement to the Callable interface - accepts one argument and possibly throws somethind

Method Summary

Modifier and Type	Method and Description
RET	invoke(ARG arg)
static <ARG> void	invokeAll(ARG arg, java.util.Collection<? extends Invoker<? super ARG,?>> invokers) Invokes all the instances ignoring the return value.
static <ARG> java.util.AbstractMap.SimpleImmutableEntry<Invoker<? super ARG,?>,java.lang.Throwable>	invokeTillFirstFailure(ARG arg, java.util.Collection<? extends Invoker<? super ARG,?>> invokers) Invokes all instances until 1st failure (if any)
static <ARG> Invoker<ARG,java.lang.Void>	wrapAll(java.util.Collection<? extends Invoker<? super ARG,?>> invokers)
static <ARG> Invoker<ARG,java.lang.Void>	wrapFirst(java.util.Collection<? extends Invoker<? super ARG,?>> invokers)

Method Detail

invoke

RET invoke(ARG arg)
    throws java.lang.Throwable

Throws:

java.lang.Throwable

wrapAll

static <ARG> Invoker<ARG,java.lang.Void> wrapAll(java.util.Collection<? extends Invoker<? super ARG,?>> invokers)

invokeAll

static <ARG> void invokeAll(ARG arg,
                            java.util.Collection<? extends Invoker<? super ARG,?>> invokers)
                     throws java.lang.Throwable

Invokes all the instances ignoring the return value. Any intermediate exceptions are accumulated and thrown at the end.

Type Parameters:

ARG - Argument type

Parameters:

arg - The argument to pass to the invoke(Object) method

invokers - The invokers to scan - ignored if null/empty (also ignores null members)

Throws:

java.lang.Throwable - If invocation failed

wrapFirst

static <ARG> Invoker<ARG,java.lang.Void> wrapFirst(java.util.Collection<? extends Invoker<? super ARG,?>> invokers)

invokeTillFirstFailure

static <ARG> java.util.AbstractMap.SimpleImmutableEntry<Invoker<? super ARG,?>,java.lang.Throwable> invokeTillFirstFailure(ARG arg,
                                                                                                                           java.util.Collection<? extends Invoker<? super ARG,?>> invokers)

Invokes all instances until 1st failure (if any)

Type Parameters:

ARG - Argument type

Parameters:

arg - The argument to pass to the invoke(Object) method

invokers - The invokers to scan - ignored if null/empty (also ignores null members)

Returns:

A AbstractMap.SimpleImmutableEntry representing the first failed invocation - null if all were successful (or none invoked).