org.apache.tapestry5.ioc.services

Interface PerthreadManager

All Known Implementing Classes:

PerthreadManagerImpl

public interface PerthreadManager

Manages per-thread data, and provides a way for listeners to know when such data should be cleaned up. Typically, data is cleaned up at the end of the request (in a web application). Tapestry IoC has any number of objects that need to know when this event occurs, so that they can clean up any per-thread/per-request state.

Method Summary

Methods

Modifier and Type	Method and Description
void	addThreadCleanupCallback(Runnable callback) Adds a callback to be invoked when cleanup() is invoked; callbacks are then removed.
void	addThreadCleanupListener(ThreadCleanupListener listener) Deprecated. Deprecated in 5.4, use addThreadCleanupCallback(Runnable) instead.
void	cleanup() Immediately performs a cleanup of the thread, invoking all callback, then discarding all per-thread data stored by the manager (including the list of callbacks).
<T> PerThreadValue<T>	createValue() Creates a value using a unique internal key.
<T> ObjectCreator<T>	createValue(ObjectCreator<T> delegate) Return ObjectCreator, which for each thread, the first call will use the delegate ObjectCreator to create an instance, and later calls will reuse the same per-thread instance.
<T> T	invoke(Invokable<T> invokable) Returns the result from the invocation, providing a try...finally to cleanup after.
void	run(Runnable runnable) Invokes Runnable.run(), providing a try...finally to cleanup after.

Method Detail

addThreadCleanupListener

void addThreadCleanupListener(ThreadCleanupListener listener)

Deprecated. Deprecated in 5.4, use addThreadCleanupCallback(Runnable) instead.

Adds a listener to the hub. All listeners are discarded at the cleanup().

Parameters:

listener - to add

addThreadCleanupCallback

void addThreadCleanupCallback(Runnable callback)

Adds a callback to be invoked when cleanup() is invoked; callbacks are then removed.

Parameters:

callback -

Since:

5.4

cleanup

void cleanup()

Immediately performs a cleanup of the thread, invoking all callback, then discarding all per-thread data stored by the manager (including the list of callbacks).

createValue

<T> PerThreadValue<T> createValue()

Creates a value using a unique internal key.

Since:

5.2.0

createValue

<T> ObjectCreator<T> createValue(ObjectCreator<T> delegate)

Return ObjectCreator, which for each thread, the first call will use the delegate ObjectCreator to create an instance, and later calls will reuse the same per-thread instance. The instance is stored in the PerthreadManager and will be released at the end of the request.

Since:

5.4

run

void run(Runnable runnable)

Invokes Runnable.run(), providing a try...finally to cleanup after.

Since:

5.2.0

invoke

<T> T invoke(Invokable<T> invokable)

Returns the result from the invocation, providing a try...finally to cleanup after.