How to access Websphere environment variable ?

mmuruganandam,

If you check websphere admin, ie.  "Environment" ==>  "Manage Websphere Variables". There only Variable Name and Value is maintained. There is no jndi binding for the variable.

Now I doubt whether the maintenance is right. This maintenance makes an entry in websphere's variable.xml file. Please let me know where the entry needs to be made.

Thank you.

Jeevan

You can't use "WebSphere Variables" in this way ... those variables are meant to be reused in other places on the console.  Muraga's suggestion should work, but you would only do that if there was some global variable that you wanted all apps to see and would always be the same for all apps.  If you want environment variables within your application, then set them in WSAD as part of the deployment.  Go to either the web or ejb deployment descriptor, open the environment tab, add a variable and give it a value.  Then you can look it up using java:comp/env  ... this way the value will be specific to your application.

Don't forget you can also use System.getProperty("<property name>") to get System properties such as where WAS is installed and what OS you're running.

I have written this piece of code to access the variable maintained in
Admin -> Environment -> Naming -> Name Space Bindings. But am unable to access it. It is not giving mw any error.

String variablename = "";
try
{
      System.out.println("1 =====>Jeevan ==>");
      javax.naming.Context ic = new javax.naming.InitialContext();
      System.out.println("2 =====>Jeevan ==>");
      System.out.println("3 =====>Jeevan s==>");
      variablename = (String)ic.lookup("PROPERTY_FILE_PATH_JNDI");
      System.out.println("4 =====>Jeevan ==>");
}
catch(NamingException ex)
{
      System.out.println("variablename =====>Exception==>"+variablename);
             ex.printStackTrace();
      throw new RuntimeException(ex.getMessage());    
}


Output :

[5/21/02 19:04:32:109 IST] 52dc4ecd SystemOut     O 1 =====>Jeevan ==>
[5/21/02 19:04:32:109 IST] 52dc4ecd SystemOut     O 2 =====>Jeevan ==>
[5/21/02 19:04:32:109 IST] 52dc4ecd SystemOut     O 3 =====>Jeevan s==>
[5/21/02 19:04:32:125 IST] 52dc4ecd SystemOut     O variablename =====>Exception==>



Please help.
Thanks.

shouldn't your lookup string be

variablename = (String)ic.lookup("java:comp/env/PROPERTY_FILE_PATH_JNDI");

No I tried it too.

variablename = (String)ic.lookup("java:comp/env/PROPERTY_FILE_PATH_JNDI");

But did not work. Gives the same output.

p.s. a little trick I used to figure out where the name was:  I ran the UTC client and used the JNDI explorer to view the namespace.

This too did not work

variablename = (String)ic.lookup("thisNode/cell/legacyRoot/PROPERTY_FILE_PATH_JNDI");


Also our client is wishes to use Websphere veriable, so cannot use System.getProperty().

Make sure that you have restarted the server after creating the variable in the WAS.  Not only the application, the server itself has to restart in order bring the variable being binded to the environment

I had entered Naming Identifier as PROPERTY_FILE_PATH_JNDI and Name in Name space as PROPERTY_FILE_PATH. That was wrong.

Thank you for your help damonf and mmuruganandam.