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WOApplication represents one instance of the application
One application instance for each running executable (e.g. one executable per machine with own application state)
Application.java is automatically created as a subclass of WOApplication, when you make a new project.
Each application instance has many sessions (manages multiple session objects)
A session is a user's view of your application
Log in, browse, submit data, Log Out.
Place to store state for your session
Session.java is automatically created as a sub Class of WOSession
Security
Each session has an automatically generated unique session ID - created when the user enters your site
Appears as garbage inside the URL - for security, so that no one else can look at your session
ID could be hidded in a cookie (but no need to)
Cookie is another way of securely remembering state
Server sends you a bit of information (a cookie)
When you get it, your Browser automatically sends a cookie back
Contains your name and state of where you are up to
WebObjects URLs
Top level application URL - deployed
http://www.host.com/cgi-bin/WebObjects/App
Session specific URL
.../WebObjects/App.woa/wo/gobblygook/1.7
.../Its a WebObjects App/ wo application name / its a component action not a dircect action / session ID / element id
Direct Connect URL - development
http://localhost:1223/cgi-bin/WebObjects/tut2
Back Page updated August 17, 2004
