org.apache.tapestry5.ioc.services
Interface PerThreadValue<T>


public interface PerThreadValue<T>

Provides access to per-thread (and, by extension, per-request) data, managed by the PerthreadManager. A PerThreadValue stores a particular type of information.

Since:
5.2.0
See Also:
PerthreadManager.createValue()

Method Summary
 boolean exists()
          Is a value stored (even null)?
 T get()
          Reads the current per-thread value, or returns null if no value has been stored.
 T get(T defaultValue)
          Gets the current per-thread value if it exists (even if null), or the defaultValue if no value has been stored.
 T set(T newValue)
          Sets the current per-thread value, then returns that value.
 

Method Detail

exists

boolean exists()
Is a value stored (even null)?


get

T get()
Reads the current per-thread value, or returns null if no value has been stored.


get

T get(T defaultValue)
Gets the current per-thread value if it exists (even if null), or the defaultValue if no value has been stored.


set

T set(T newValue)
Sets the current per-thread value, then returns that value.



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