java.lang
Class InheritableThreadLocal

java.lang.Object
  extended by java.lang.ThreadLocal
      extended by java.lang.InheritableThreadLocal

public class InheritableThreadLocal
extends ThreadLocal

This class extends ThreadLocal to provide inheritance of values from parent thread to child thread: when a child thread is created, the child receives initial values for all inheritable thread-local variables for which the parent has values. Normally the child's values will be identical to the parent's; however, the child's value can be made an arbitrary function of the parent's by overriding the childValue method in this class.

Inheritable thread-local variables are used in preference to ordinary thread-local variables when the per-thread-attribute being maintained in the variable (e.g., User ID, Transaction ID) must be automatically transmitted to any child threads that are created.

Since:
1.2
Version:
1.17, 03/12/05
Author:
Josh Bloch and Doug Lea
See Also:
ThreadLocal

Constructor Summary
InheritableThreadLocal()
           
 
Method Summary
 
Methods inherited from class java.lang.ThreadLocal
get, set
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

InheritableThreadLocal

public InheritableThreadLocal()