Module jdk.dynalink

Package jdk.dynalink.linker.support

Class CompositeGuardingDynamicLinker

java.lang.Object

jdk.dynalink.linker.support.CompositeGuardingDynamicLinker

All Implemented Interfaces:

GuardingDynamicLinker

public class CompositeGuardingDynamicLinker
extends Object
implements GuardingDynamicLinker

A GuardingDynamicLinker that delegates sequentially to a list of other guarding dynamic linkers in its getGuardedInvocation(LinkRequest, LinkerServices).

Constructor Summary

Constructors

Constructor	Description
CompositeGuardingDynamicLinker(Iterable<? extends GuardingDynamicLinker> linkers)	Creates a new composite linker.

Method Summary

Modifier and Type	Method	Description
GuardedInvocation	getGuardedInvocation(LinkRequest linkRequest, LinkerServices linkerServices)	Delegates the call to its component linkers.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CompositeGuardingDynamicLinker

public CompositeGuardingDynamicLinker(Iterable<? extends GuardingDynamicLinker> linkers)

Creates a new composite linker.

Parameters:

linkers - a list of component linkers.

Throws:

NullPointerException - if linkers or any of its elements are null.

Method Detail

getGuardedInvocation

public GuardedInvocation getGuardedInvocation(LinkRequest linkRequest,
                                              LinkerServices linkerServices)
                                       throws Exception

Delegates the call to its component linkers. The first non-null value returned from a component linker is returned. If no component linker returns a non-null invocation, null is returned.

Specified by:

getGuardedInvocation in interface GuardingDynamicLinker

Parameters:

linkRequest - the object describing the request for linking a particular invocation

linkerServices - linker services

Returns:

the first non-null return value from a component linker, or null if none of the components returned a non-null.

Throws:

Exception - if the operation fails for whatever reason