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Samples
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The Samples
Gallery offers:
- Asynchronous beans - WebSphere Trader
This Sample illustrates
how to implement a streaming stock ticker server and client using asynchronous
beans and J2EE services such as:
- Servlets
- Java Message Service (JMS)
- Session enterprise beans
- Container-managed persistence (CMP) 2.0 enterprise beans
- Message-driven beans (MDB)
This Sample uses several parts to maximize the utilization of
a server:
- Work - Runs J2EE context-aware code on a thread.
- Alarm - Runs J2EE context-aware code at a given time interval.
- EventSource - A method of broadcasting events to registered listeners.
- SubsystemMonitor - A thread that monitors the status of any asynchronous
system and uses an EventSource method to inform registered listeners of the
system status.
- WorkManager - Thread configuration and J2EE context policies that are
used by various asynchronous beans parts.
- AsynchScope - A collection of alarms, subsystem monitors and other asynchronous
scopes that support relationships. This collection utilizes a single WorkManager
thread and is also an event source.
- Startup Bean - A specialized, stateful session enterprise bean that supports
bootstrapping asynchronous work when the application starts.
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