helma.extensions.demo
Class DemoExtension

java.lang.Object
  helma.extensions.HelmaExtension
      helma.extensions.demo.DemoExtension

public class DemoExtension
extends HelmaExtension

a demo extension implementation, to activate this add extensions = helma.extensions.demo.DemoExtensions to your server.properties. a new global object demo that wraps helma.main.Server will be added to the scripting environment.

Constructor Summary

DemoExtension()

Method Summary

void	applicationStarted(Application app) called when an Application is started.
void	applicationStopped(Application app) called when an Application is stopped.
void	applicationUpdated(Application app) called when an Application's properties are have been updated.
java.lang.String	getName()
void	init(Server server) called by the Server at startup time. should check wheter the needed classes are present and throw a ConfigurationException if not.
java.util.HashMap	initScripting(Application app, ScriptingEngine engine) called by the ScriptingEngine when it is initizalized.

Methods inherited from class java.lang.Object

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

Constructor Detail

DemoExtension

public DemoExtension()

Method Detail

init

public void init(Server server)
          throws ConfigurationException

Description copied from class: HelmaExtension

called by the Server at startup time. should check wheter the needed classes are present and throw a ConfigurationException if not.

Specified by:

init in class HelmaExtension

Parameters:

server - ...

Throws:

ConfigurationException - ...

applicationStarted

public void applicationStarted(Application app)
                        throws ConfigurationException

Description copied from class: HelmaExtension

called when an Application is started. This should be synchronized when any self-initialization is performed.

Specified by:

applicationStarted in class HelmaExtension

Parameters:

app - ...

Throws:

ConfigurationException - ...

applicationStopped

public void applicationStopped(Application app)

Description copied from class: HelmaExtension

called when an Application is stopped. This should be synchronized when any self-destruction is performed.

Specified by:

applicationStopped in class HelmaExtension

Parameters:

app - ...

applicationUpdated

public void applicationUpdated(Application app)

Description copied from class: HelmaExtension

called when an Application's properties are have been updated. note that this will be called at startup once *before* applicationStarted().

Specified by:

applicationUpdated in class HelmaExtension

Parameters:

app - ...

initScripting

public java.util.HashMap initScripting(Application app,
                                       ScriptingEngine engine)
                                throws ConfigurationException

Description copied from class: HelmaExtension

called by the ScriptingEngine when it is initizalized. Throws a ConfigurationException when this type of ScriptingEngine is not supported. New methods and prototypes can be added to the scripting environment. New global vars should be returned in a HashMap with pairs of varname and ESObjects. This method should be synchronized, if it performs any other self-initialization outside the scripting environment.

Specified by:

initScripting in class HelmaExtension

Parameters:

app - ...

engine - ...

Returns:

...

Throws:

ConfigurationException - ...

getName

public java.lang.String getName()

Specified by:

getName in class HelmaExtension

Returns:

...