The following issue has been updated:
Updater: Scott T Weaver (mailto:[EMAIL PROTECTED])
Date: Mon, 24 May 2004 2:19 PM
Changes:
summary changed from Refactor InterceptorAdapter to support ThreadLocal
component instacnes to Refactor InterceptorAdapter to support ThreadLocal component
instances
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For a full history of the issue, see:
http://issues.apache.org/jira/browse/JS2-53?page=history
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View the issue:
http://issues.apache.org/jira/browse/JS2-53
Here is an overview of the issue:
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Key: JS2-53
Summary: Refactor InterceptorAdapter to support ThreadLocal component instances
Type: Improvement
Status: Open
Priority: Major
Project: Jetspeed 2
Components:
Components Core
Versions:
2.0-a1
Assignee: Scott T Weaver
Reporter: Scott T Weaver
Created: Mon, 24 May 2004 2:15 PM
Updated: Mon, 24 May 2004 2:19 PM
Description:
I have taken what David Taylor has done with InterceptorAdapter and refactored it to
support different DelegationStrategies for compnent creation.
The two initial strategies are StandardDelegationStrategy and
ThreadLocalDelegationStrategy.
StandardDelegationStartegy: works identical to David's original implementation, which
returns a dynamic proxy that adds Swappable automatically.
ThreadLocalDelegationStrategy works much like StandardDelegationStrategy but with
added bonus of getComponentInstance returning a thread safe/local instance of the
component. It also allows hot swapping on a per thread basis. This means that per
thread components, like PersistenceStore can be held in an instance vairable of an
object and you can be guaranteed that that PersistenceStore instance will always be
the correct one for that thread. This negates the need for the
PersistenceStoreContainer object entirely.
What's even cooler is that we can now have objects that take and keep per request
objects, like HttpServletRequest, as depdencies, and HttpServletRequest instance will
always be the correct instance for that thread. We could achieve this by hot swapping
the dynamic proxy component instance of HttpServletRequest in the
JetspeedServlet.doGet().
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