Package com.alibaba.ttl

Interface TtlCopier<T>

All Known Implementing Classes:

TransmittableThreadLocal

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 TtlCopier<T>

TtlCopier copies the value when Transmitter#capture(), use the copied value when Transmitter#replay(Object).

Since:

2.11.0

Author:

Jerry Lee (oldratlee at gmail dot com)

See Also:

• TransmittableThreadLocal.Transmitter
• TransmittableThreadLocal.Transmitter.capture()

Method Summary

Modifier and Type	Method	Description
T	copy(T parentValue)	Computes the value for TransmittableThreadLocal or registered ThreadLocal(registered by method Transmitter#registerThreadLocal) as a function of the source thread's value at the time the task Object is created.

Method Details

copy

T copy(T parentValue)

Computes the value for TransmittableThreadLocal or registered ThreadLocal(registered by method Transmitter#registerThreadLocal) as a function of the source thread's value at the time the task Object is created.

This method is called from TtlRunnable or TtlCallable when it create, before the task is started (aka. called when Transmitter#capture()).

See Also:

• TransmittableThreadLocal.Transmitter.registerThreadLocal(ThreadLocal, TtlCopier)
• TransmittableThreadLocal.Transmitter.registerThreadLocalWithShadowCopier(ThreadLocal)
• TransmittableThreadLocal.Transmitter.unregisterThreadLocal(java.lang.ThreadLocal<T>)