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nextapp.echoservlet
Class Initializer  

java.lang.Object
  nextapp.echoservlet.Initializer

All Implemented Interfaces:

java.io.Serializable, Service

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final class Initializer

extends java.lang.Object

implements java.io.Serializable, Service

The service is responsible for initializing applications. This is the first service that will be invoked when an application starts up. It provides a client detection page that will use JavaScript to gather information about public properties of the client browser, storing them in a form. The form is submitted immediately thereafter, invoking this service a second time. The form data will be parsed by a new ClientProperties object that is created from this service. An InstancePeer and related objects are then created for the application, stored in the user's session, and initialized. The service() method of the application's default window is then invoked, allowing the application to take control.

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Field Summary
private static Id	ID           The Id of this service
static java.lang.String	PARAMETER_DETECT_COMPLETE           The HTTP form parameter name used by the client detection script to indicate client detection information has been retrieved.
static java.lang.String	PARAMETERS_KEY_PREFIX           A prefix for the session key used to temporarily store initial parameters.
private static Service	SERVICE_CLIENT_DETECT           The client detection service.
private static Service	SERVICE_STARTUP_CONTAINER           The client detection service.

 

Constructor Summary
(package private)	Initializer()           Creates an Initializer service.

 

Method Summary
static VariableData	createInitialVariableData(Connection conn)           Creates one-time-use variable data used to start the application.
Id	getId()           Returns a unique identifier for this service.
private  void	saveInitialParameters(Connection conn, java.lang.String parameterMapSessionKey)           Saves the initial servlet parameters so that they can later be available to the application instance.
void	service(Connection conn)           Services an HTTP request.

 

Methods inherited from class java.lang.Object

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

 

Field Detail

PARAMETERS_KEY_PREFIX

public static final java.lang.String PARAMETERS_KEY_PREFIX

A prefix for the session key used to temporarily store initial parameters.

See Also:

Constant Field Values

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ID

private static final Id ID

The Id of this service

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PARAMETER_DETECT_COMPLETE

public static final java.lang.String PARAMETER_DETECT_COMPLETE

The HTTP form parameter name used by the client detection script to indicate client detection information has been retrieved.

See Also:

Constant Field Values

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SERVICE_CLIENT_DETECT

private static final Service SERVICE_CLIENT_DETECT

The client detection service. It is not necessary that this service be registered with the EchoServer.

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SERVICE_STARTUP_CONTAINER

private static final Service SERVICE_STARTUP_CONTAINER

The client detection service. It is not necessary that this service be registered with the EchoServer.

Constructor Detail

Initializer

Initializer()

Creates an Initializer service. Only initializer service is used by the entire application.

Method Detail

createInitialVariableData

public static VariableData createInitialVariableData(Connection conn)

Creates one-time-use variable data used to start the application.

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getId

public Id getId()

Description copied from interface: Service

Returns a unique identifier for this service.

Specified by:

getId in interface Service

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saveInitialParameters

private void saveInitialParameters(Connection conn,
                                   java.lang.String parameterMapSessionKey)

Saves the initial servlet parameters so that they can later be available to the application instance.

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service

public void service(Connection conn)
             throws java.io.IOException

Description copied from interface: Service

Services an HTTP request. Information about the HTTP request as well as methods for issuing a response are available from the provided Connection object.

Specified by:

service in interface Service

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Overview  Package   Class  Use  Deprecated  Index
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