com.neeve.server.app
Class SrvAppLoader

java.lang.Object
  com.neeve.root.RootObject
      com.neeve.server.app.SrvAppLoader

public final class SrvAppLoader
extends RootObject

The server application loader.

Threading:

This class is safe for concurrent access by multiple threads.

Nested Class Summary

class

SrvAppLoader.AepEngineWatcher

Method Summary

SrvConfigAppDescriptor	getAppDescriptor() Get the application's descriptor
AepEngine	getAppEngine() Get the application's AEP engine.
String	getAppJarVersion() Get the application's version.
Object	getAppMain() Get the application's main class
SrvAppManager	getAppManager() Get the server's application manager
String	getAppName() Get the application name.
short	getAppVersion() Get the application's version.
SrvConfigDescriptor	getServerDescriptor() Get the hosting server's descriptor.
static void	main(String[] args)
void	scheduleAppEvent(Object event) Schedule an application event.
void	scheduleAppReload() Schedule an application reload.
void	scheduleAppUnload() Schedule the unload of an application.

Methods inherited from class com.neeve.root.RootObject

getChecked, getThreaded, getTracer, setChecked, setTracer

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getServerDescriptor

public final SrvConfigDescriptor getServerDescriptor()

Get the hosting server's descriptor.

Threading:

This method can be invoked concurrently by multiple threads.

getAppDescriptor

public final SrvConfigAppDescriptor getAppDescriptor()

Get the application's descriptor

Threading:

This method can be invoked concurrently by multiple threads.

This method returns the application's descriptor. It is not permissible for the application to modify the returned descriptor.

getAppName

public final String getAppName()

Get the application name.

Threading:

This method can be invoked concurrently by multiple threads.

getAppVersion

public final short getAppVersion()

Get the application's version.

Threading:

This method can be invoked concurrently by multiple threads.

getAppJarVersion

public final String getAppJarVersion()

Get the application's version.

If a MANIFEST.MF can be found from the same url as the app main class is loaded then the Implementation-Version in that manifest is returned here. If the manifest does not include an Implementation-Version or is empty then the Specification-Version is returned.

Threading:

This method can be invoked concurrently by multiple threads.

getAppMain

public final Object getAppMain()

Get the application's main class

Threading:

This method can be invoked concurrently by multiple threads.

getAppEngine

public final AepEngine getAppEngine()

Get the application's AEP engine.

Threading:

This method can be invoked concurrently by multiple threads.

Note: The application loader is injected into the application before the engine is created. To receive the engine during startup, the application should create an engine injection point.

getAppManager

public final SrvAppManager getAppManager()

Get the server's application manager

Threading:

This method can be invoked concurrently by multiple threads.

scheduleAppUnload

public final void scheduleAppUnload()
                             throws ESrvAppException

Schedule the unload of an application.

Throws:

IllegalStateException - Thrown if the server application manager has been closed (typically due to server shutdown concurrently occuring with the invocation of this method)

ESrvAppException - Thrown in case an error is encountered while scheduling the background task.

This method schedules a background task to unload the application managed by a loader. This method schedules the unload and returns immediately. The application unload proceeds concurrently in the background.

Threading:

This method can be invoked concurrently by multiple threads.

scheduleAppReload

public final void scheduleAppReload()
                             throws ESrvAppException

Schedule an application reload.

Throws:

IllegalStateException - Thrown if the server application manager has been closed (typically due to server shutdown concurrently occuring with the invocation of this method)

ESrvAppException - Thrown in case an error is encountered while scheduling the background task.

This method schedules a background task to unload and then immediately reload the application managed by a loader. This method schedules the unload and returns immediately. The application reload proceeds concurrently in the background. This method can also be invoked to just load an application that is not currently loaded.

Threading:

This method can be invoked concurrently by multiple threads.

scheduleAppEvent

public final void scheduleAppEvent(Object event)
                            throws ESrvAppException

Schedule an application event.

Parameters:

event - An event object to supply to the invoked event handlers

Throws:

IllegalStateException - Thrown if the server application manager has been closed (typically due to server shutdown concurrently occuring with the invocation of this method)

ESrvAppException - Thrown in case an error is encountered while scheduling the background task.

This method schedules an event in the server's 'admin' thread. The method schedules the background dispatch of the event and returns immediately. The event is then subsequently dispatched to the application's event handler whose method signature contains a parameter that matches the type of the object supplied to this method.

This method is designed for use by administrative applications that actively interact with the server in doing their tasks e.g. actively starting and stopping applications. By scheduling tasks in the server's admin thread, the application automatically synchronizes its activities with the server's administration activities.

Threading:

This method can be invoked concurrently by multiple threads.

main

public static final void main(String[] args)