java - 字节好友 : How to do method delegation/forwarding to a volatile field

Question

我有(伪代码)这样​​的东西:

final Class<OUT> newClass = (Class<OUT>) new ByteBuddy()
.subclass(Object.class)
.name(newName)
.implement(SomeInterface.class, SomeOtherInterface.class)
.method(ElementMatchers.isMethod())                            
.intercept(
    ExceptionMethod.throwing(UnsupportedOperationException.class,
                            "calling this method is not supported"))
// in fact I am matching for more than a single method here
.method(ElementMatchers.named("getUuid"))
.intercept(
    MethodDelegation.toInstanceField(SomeOtherInterface.class, "delegate"))
.make()
.load(aBusinessEntityClass.getClassLoader(), ClassLoadingStrategy.Default.WRAPPER)
.getLoaded();

我当前的问题是:我需要我的delegate 字段volatile。我怎样才能做到这一点？

Answer 1

toInstanceField API 已随 Byte Buddy 1.5.0 一起退役，取而代之的是新的检测 API，您可以在其中显式定义字段:

new ByteBuddy()
  .defineField("delegate", SomeOtherInterface.class, VOLATILE)
  .method(ElementMatchers.named("getUuid"))
  .intercept(MethodDelegation.toField("delegate"));

这允许做其他事情，例如添加注释等。

现在所有实现都实现了这种方法。新版本今天发布。