Hello,
I have completed the Notification Architecture proposal which can be
found at:
http://chandlerproject.org/Notes/NotificationArchitectureProposal
I have also linked to the proposal from the Notification Mockups Page:
http://chandlerproject.org/Notes/NotificationsMockups
A brief highlight of recommendations include:
* Adding the ability for a user to specify his or her timezone during
the sign up process and the ability to change that timezone in the
Account Preferences.
* Creating two new Atom projection URI's to support notification
changes and forward notification queries.
* Augmentations to the Service layer to
based on a time range return all items in a collection that have a
start time (events) or reminder time (alarms) that falls with in the
range.
based on a time range query for a collection return notification
objects that represent the changes per item with in the range.
Record in real time changes made to an item or a collection (via a
Hibernate / Spring abstraction) to modification database tables
including the previous and current values.
* Expanding the User Preferences logic to store settings for push
based listeners (EMAIL, SMS, XMPP) including which collections to
push, the type of notifications (forward or modifications), and how
often.
* Incorporating a Job Scheduler in to the Cosmo Architecture. The
Scheduler will have jobs that awake at specific intervals, determine
which users want notifications, query the Service layer, and pass the
results to registered listeners (EMAIL, SMS, XMPP).
* Adding new tables to the Cosmo schema and wrapping the database
insertion and query logic in a Hibernate / Spring abstraction layer.
The tables would persist changes to items / collections as well as
additions and removals. The appropriate table columns would be
indexed for fast query of modifications made in a given time range.
-Brian
Brian Kirsch
Senior Web / Desktop Engineer and I18n Guru
Open Source Applications Foundation
http://www.chandlerproject.org
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