Design Patter for the login process

[Swosti Dipan Pal]

Hi,

I have a JSP which reads the user name and password and redirects to class which authenticates the user. Here, the authentication will be done by one of the two different servers. The class needs to decide which server to call. Is there any good design to follow ?

Thanks in Advance.

[Ilja Preuss]

How does the class know which server to call?

Without having further information, you might want to take a look at the Chain Of Responsibility pattern.

[Swosti Dipan Pal]

No, the class is having only the user name and password. What I am trying to do is find out a specific key=value pair from a properties file. Depending on that it will choose the server.

Please let me know if you have any better idea.

Thanks a lot !

[Ilja Preuss]

I still don't understand how, only having username and password, you decide which server to use. Could you please elaborate, perhaps with an example? Thanks.

[Swosti Dipan Pal]

I am sorry. I should have giving the implementation pseuduo code earlier.

pseudo code:

//get the username and password

//check for the properties file for a specific key ( willAuth = Yes)- if Yes , data will be sent to server 1

if (found){
//Pass the credential to the server 1
if (Authenticated){
//set ldapAuth = true;
}
else{
//set mySqlAuth = flase;
}
}
...

if (mySqlAuth == false){
//send the credential to Server 2
//set mySqlAuth = true;
}

if ( ldapAuth = true || mySqlAuth = true){

// do this common task

}