olr.presentation
Class ExtendedHttpPresentation

java.lang.Object
  olr.presentation.ExtendedHttpPresentation

All Implemented Interfaces:

com.lutris.appserver.server.httpPresentation.HttpPresentation

Direct Known Subclasses:

ContentAuthorROM, Header, Locked, LoggedOut, Login, Relations, Sciecom, SciecomHeader, SecureHttpPresentation, SequenceWizard, StructureHeader, UnsavedChanges, Welcome1

public abstract class ExtendedHttpPresentation

extends java.lang.Object

implements com.lutris.appserver.server.httpPresentation.HttpPresentation

Version:

$Id: ExtendedHttpPresentation.java,v 1.6 2004/08/03 08:33:53 roku Exp $

Constructor Summary

ExtendedHttpPresentation()
Creates an instance.

Method Summary

protected void	checkForUserLogin() Checks if the user is already logged in.
void	clearSession() Clears the current users session.
Olr	getApplication()
com.lutris.appserver.server.httpPresentation.HttpPresentationComms	getComms()
java.lang.String	getPageContentForEvent(java.lang.String event) Call a method to produce page content depending on the event.
SessionData	getSessionData()
RdfUser	getUser()
abstract java.lang.String	handleDefault() Called upon page request.
void	handleEvent(com.lutris.appserver.server.httpPresentation.HttpPresentationComms comms)
protected void	initSessionData(com.lutris.appserver.server.httpPresentation.HttpPresentationComms comms) Initializes session data based on comms
protected abstract boolean	loggedInUserRequired() Called on subclass to determine if this Presenentation needs a valid logged in user to display.
void	run(com.lutris.appserver.server.httpPresentation.HttpPresentationComms comms)
void	setUser(RdfUser user)

Methods inherited from class java.lang.Object

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

Constructor Detail

ExtendedHttpPresentation

public ExtendedHttpPresentation()

Creates an instance.

Method Detail

handleDefault

public abstract java.lang.String handleDefault()
                                        throws com.lutris.appserver.server.httpPresentation.HttpPresentationException

Called upon page request.

Returns:

Should return a string of (X)HTML

Throws:

com.lutris.appserver.server.httpPresentation.HttpPresentationException

loggedInUserRequired

protected abstract boolean loggedInUserRequired()

Called on subclass to determine if this Presenentation needs a valid logged in user to display.

Returns:

getComms

public com.lutris.appserver.server.httpPresentation.HttpPresentationComms getComms()

Returns:

The comms object.

getSessionData

public SessionData getSessionData()

Returns:

This users SessionData

setUser

public void setUser(RdfUser user)
             throws com.lutris.appserver.server.httpPresentation.HttpPresentationException

Parameters:

user - The current logged in user

Throws:

com.lutris.appserver.server.httpPresentation.HttpPresentationException

getUser

public RdfUser getUser()

Returns:

The current logged in user

clearSession

public void clearSession()

Clears the current users session.

See Also:

SessionData

run

public void run(com.lutris.appserver.server.httpPresentation.HttpPresentationComms comms)
         throws java.lang.Exception

Specified by:

run in interface com.lutris.appserver.server.httpPresentation.HttpPresentation

Throws:

java.lang.Exception

See Also:

HttpPresentation.run(com.lutris.appserver.server.httpPresentation.HttpPresentationComms)

initSessionData

protected void initSessionData(com.lutris.appserver.server.httpPresentation.HttpPresentationComms comms)
                        throws com.lutris.appserver.server.httpPresentation.HttpPresentationException

Initializes session data based on comms

Parameters:

comms - Parameter object

Throws:

com.lutris.appserver.server.httpPresentation.HttpPresentationException

checkForUserLogin

protected void checkForUserLogin()
                          throws com.lutris.appserver.server.httpPresentation.HttpPresentationException,
                                 com.lutris.appserver.server.httpPresentation.ClientPageRedirectException

Checks if the user is already logged in.

Throws:

com.lutris.appserver.server.httpPresentation.HttpPresentationException

com.lutris.appserver.server.httpPresentation.ClientPageRedirectException - If

handleEvent

public void handleEvent(com.lutris.appserver.server.httpPresentation.HttpPresentationComms comms)
                 throws java.lang.Exception

Parameters:

comms -

Throws:

java.lang.Exception

getPageContentForEvent

public java.lang.String getPageContentForEvent(java.lang.String event)
                                        throws java.lang.Exception

Call a method to produce page content depending on the event. The method called is perfomed using java reflection. The name of the called method is handel<event>() where the first letter of the event> is made uppercase.

Example: event=login results in a method call handleLogin()

Parameters:

event -

Returns:

Normally a (X)HTML string should be returned

Throws:

java.lang.Exception

See Also:

#toMethodName(String)

getApplication

public Olr getApplication()

Returns:

The Enhydra Application object