de.intarsys.tools.component

Interface IActivityContext

All Superinterfaces:

IAttributeSupport, IReferenceCounter

All Known Implementing Classes:

StandardActivityContext

public interface IActivityContext
extends IAttributeSupport, IReferenceCounter

Provides a context for an ongoing "activity". This is both useful for the loose coupling of tasks collaborating on a common set of objects and for demarcation of the lifespan of objects attached to the context. The scope of an IActivityContext can be manifold:

• Thread
This behaves like a ThreadLocal container. Information is accessible from every client running on the "current thread".
• Session
Provide contextual information for a "session", where context is attached and detached to a Thread multiple times and the threads do not have to be the same for subsequent attaches.

The IActivityContext defines the lifespan of this common information, starting with the first acquire and ending with the last release. Operations (like setAttribute) outside of the lifespan MUST be discarded to avoid resource leaks.

Field Summary

Fields inherited from interface de.intarsys.tools.component.IReferenceCounter

ATTR_REFERENCECOUNT

Method Summary

Methods inherited from interface de.intarsys.tools.attribute.IAttributeSupport

getAttribute, removeAttribute, setAttribute

Methods inherited from interface de.intarsys.tools.component.IReferenceCounter

acquire, getReferenceCount, release, release