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:我需要委托字段为 volatile 。我怎样才能做到这一点?
答案 0 :(得分:2)
使用Byte Buddy 1.5.0退出toInstanceField
API,转而使用新的检测API,您可以明确定义该字段:
new ByteBuddy()
.defineField("delegate", SomeOtherInterface.class, VOLATILE)
.method(ElementMatchers.named("getUuid"))
.intercept(MethodDelegation.toField("delegate"));
这允许执行其他操作,例如添加注释等。
现在,所有Implementation
都实施了此方法。新版本于今天发布。
答案 1 :(得分:1)
好的,找到了适用于我的解决方案,万一有人感兴趣:
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"))
// -- HERE THE FIELD IS MODIFIED AGAIN, IN THIS CASE AS --
// -- PRIVATE & VOLATILE --
.field(ElementMatchers.named("delegate"))
.transform(Transformer.ForField.withModifiers(FieldManifestation.VOLATILE, Visibility.PRIVATE))
.make()
.load(aBusinessEntityClass.getClassLoader(), ClassLoadingStrategy.Default.WRAPPER)
.getLoaded();
解决方案是通过使用 transform()和相应的 Transformer.ForField.withModifiers()调用 field()来修改字段。 EM>
希望能帮助每个人面对这个问题。