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## com.bea.adapter.event
Class LocalEventRouter

    java.lang.Object
      com.bea.adapter.event.LocalEventRouter

All Implemented Interfaces:
  IEventRouter

    public class LocalEventRouter

extends Object
implements IEventRouter

The actual worker object in the WLAI event router. Handles event subscriptions, instantiating and communicating with the event generator (by invoking both start() and refresh() on the event generator), IEventGenerator instance, and posting events back to subscribers.

Nested Class Summary

Nested classes/interfaces inherited from interface com.bea.wlai.event.IEventRouter
`IEventRouter.IRoutingInfo`

Constructor Summary
`LocalEventRouter(AbstractWLIResourceAdapter ra, IEventGenerator eventGenerator)`

Method Summary
`void` | `addEventDef(EventMessageEndpointFactory emef, EventActivationSpec eas)`
`void` | `eisAvailable(String description)` Allows the EventGenerator to indicate that its EIS instance is now available.
`void` | `eisUnavailable(String reason)` Allows the EventGenerator to indicate that its EIS instance is temporarily unavailable.
`Status` | `getEventGeneratorStatus()` Get an indication of the health/status of the EventGenerator.
`String[]` | `getEventRouterInstanceIDs()` Get a list of IDs this event router represents.
`IEventRouter.IRoutingInfo` | `getEventRoutingInfo(com.bea.wlai.common.IEventDefinition eventDef)` Prearrange for the delivery of events of the given type by getting a RoutingInfo object that allows for very efficient delivery of events conforming to the given IEventDefinition.
`com.bea.wlai.common.IEventDefinition[]` | `getEventTypeSummary()` Get a list of event definitions currently being serviced by this event router.
`String` | `getGUID()` Gets the globally unique ID of this event router instance or null if none was given.
`String` | `getName()` Gets the name of this event router instance or null if none was given.
`boolean` | `isEISAvailable()` Get the availability of the EIS instance for the EventGenerator.
`void` | `postEvent(com.bea.wlai.common.IEvent event)` Post the given event to all listeners for this event router.
`void` | `postEvent(IEventRouter.IRoutingInfo ri, com.bea.wlai.common.IEvent event)` Post an event to all subscribers using a RoutingInfo object obtained from a prior call to getRoutingInfo().
`void` | `removeEventDef(EventMessageEndpointFactory emef, EventActivationSpec eas)`
`void` | `setEventGeneratorStatus(Status status)` Allows an EventGenerator to indicate its health/status to the EventRouter.
`void` | `start(Properties props)`
`void` | `stop()`
`protected void` | `storeRetryEvent(com.bea.wlai.common.IEvent event)`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### LocalEventRouter

    public LocalEventRouter(AbstractWLIResourceAdapter ra,
                            IEventGenerator eventGenerator)

Method Detail

### getName

    public String getName()

  Description copied from interface: `IEventRouter`
  Gets the name of this event router instance or null if none was given. The name can be thought to represent the logical purpose of this router and its generator as defined at design-time.

  Specified by:
    `getName` in interface `IEventRouter`

### getGUID

    public String getGUID()

  Description copied from interface: `IEventRouter`
  Gets the globally unique ID of this event router instance or null if none was given.

  Specified by:
    `getGUID` in interface `IEventRouter`

### getEventRouterInstanceIDs

    public String[] getEventRouterInstanceIDs()

  Get a list of IDs this event router represents. An event router instance ID means different things for different adapters, but is generally thought to represent a planned/defined instance of the event router. This instance can be moved around from machine to machine to handle system outage and load balancing scenarios.

  Specified by:
    `getEventRouterInstanceIDs` in interface `IEventRouter`
  Returns:
    The list of IDs defined for this event router or null if none were defined.

### getEventTypeSummary

    public com.bea.wlai.common.IEventDefinition[] getEventTypeSummary()

  Description copied from interface: `IEventRouter`
  Get a list of event definitions currently being serviced by this event router.

  Specified by:
    `getEventTypeSummary` in interface `IEventRouter`
  Returns:
    An array of IEventDefinition objects representing all events this router has been asked to deliver.

### addEventDef

    public void addEventDef(EventMessageEndpointFactory emef,
                            EventActivationSpec eas)
                     throws EventRouterException

  Throws:
    `EventRouterException`

### removeEventDef

    public void removeEventDef(EventMessageEndpointFactory emef,
                               EventActivationSpec eas)
                        throws EventRouterException

  Throws:
    `EventRouterException`

### getEventRoutingInfo

    public IEventRouter.IRoutingInfo getEventRoutingInfo(com.bea.wlai.common.IEventDefinition eventDef)
                                                  throws Exception

  Prearrange for the delivery of events of the given type by getting a RoutingInfo object that allows for very efficient delivery of events conforming to the given IEventDefinition. The caller can use the returned RoutingInfo for future calls to postEvent(RoutingInfo, IEvent). This method and the postEvent(RoutingInfo, IEvent) method together provide a facility for increasing event delivery throughput for events of a given type. This is true because the dynamic linkage between event and subscriber is only calculated once in the call to getRoutingInfo() and not repeately as it would be when calling postEvent(IEvent).

  Specified by:
    `getEventRoutingInfo` in interface `IEventRouter`
  Throws:
    `Exception`
  See Also:
    `IEventRouter.postEvent(com.bea.wlai.common.IEvent)`

### postEvent

    public void postEvent(com.bea.wlai.common.IEvent event)
                   throws Exception

  Description copied from interface: `IEventRouter`
  Post the given event to all listeners for this event router.

  Specified by:
    `postEvent` in interface `IEventRouter`
  Parameters:
    `event` - The event to post
  Throws:
    `Exception` - if any error occurs delivering the event. It is the responsibility of the caller to handle storing this event for delivery at a later time.

### postEvent

    public void postEvent(IEventRouter.IRoutingInfo ri,
                          com.bea.wlai.common.IEvent event)
                   throws Exception

  Post an event to all subscribers using a RoutingInfo object obtained from a prior call to getRoutingInfo().

  Specified by:
    `postEvent` in interface `IEventRouter`
  Parameters:
    `ri` -
    `event` -
  Throws:
    `Exception`
  See Also:
    `IEventRouter.getEventRoutingInfo(com.bea.wlai.common.IEventDefinition)`

### storeRetryEvent

    protected void storeRetryEvent(com.bea.wlai.common.IEvent event)

### start

    public void start(Properties props)
               throws EventRouterException

  Throws:
    `EventRouterException`

### stop

    public void stop()
              throws EventRouterException

  Throws:
    `EventRouterException`

### eisUnavailable

    public void eisUnavailable(String reason)

  Allows the EventGenerator to indicate that its EIS instance is temporarily unavailable. The EventRouter will force the status of the EventGenerator to SUSPENDED and use the given description as the reason for the EventGenerator being suspended. EventGenerator implementations should provide meaningful reason information when calling this method.

  Specified by:
    `eisUnavailable` in interface `IEventRouter`

### eisAvailable

    public void eisAvailable(String description)

  Allows the EventGenerator to indicate that its EIS instance is now available. The EventRouter will force the status of the EventGenerator to HEALTHY and use the given description as the reason for the EventGenerator being resumed. If no description is available or needed, pass null for the description.

  Specified by:
    `eisAvailable` in interface `IEventRouter`

### isEISAvailable

    public boolean isEISAvailable()

  Get the availability of the EIS instance for the EventGenerator. By default the event router will return true until a call is made by the event generator to eisUnavailable().

  Specified by:
    `isEISAvailable` in interface `IEventRouter`

### setEventGeneratorStatus

    public void setEventGeneratorStatus(Status status)

  Allows an EventGenerator to indicate its health/status to the EventRouter. The method should not be used to indicate that the EIS instance is unavailable/available (use the eisUnavailable() and eisAvailable() methods for this). The status parameter should be one of the defined Status.XXX values if possible. If no pre-defined status value is appropriate to describe the status of the EventGenerator, it may use values greater than 100 to indicate the status. The adapter should then document what the adapter-specific status codes mean.

  Specified by:
    `setEventGeneratorStatus` in interface `IEventRouter`

### getEventGeneratorStatus

    public Status getEventGeneratorStatus()

  Get an indication of the health/status of the EventGenerator. Status values greater than 100 are adapter-specific. The adapter should document what the adapter-specific status codes mean.

  Specified by:
    `getEventGeneratorStatus` in interface `IEventRouter`

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