JNDI - DataSource

Question

I want to use JNDI to get access to a DataSource. Think "swing app", no EJBs, so please don't tell me to look at my app server/container docs.
I know how to create and use the DataSource, but I am having problems with JNDI. I am trying to use Sun's file system provider, under the assumption that "a provider is a provider is a provider": I want to bind an object (the fact that it happens to be a DataSource should be irrelevant to JNDI) to a certain name, I don't care what the provider uses to keep track of the bindings, if it's the file system that's perfect (this is for "continuous integration" using JUnit, not production, so performance is definitely not an issue; simplicity is the key point, and it doesn't get any simpler than a path in your local hard disk!).
My problem is this: if I choose as the URI for my object an existing path, I get a "NameAlreadyBoundException"; if I choose a non-existing path, I get a "NameNotFoundException"; if I choose an existing (empty) file name in an existing path, I get "NotContextException".
So, how on Earth can I bind my object to a URI? Is there some JNDI API that I need to use to register/create a URI/path before binding the object to it? Or am I totally wrong by trying to use the file system and have to use some other implementation, say the RMI registry? A link to specifically relevant information will be most apprecaited. Thanks in advance!

Answer 1

Long story short, this is the simplest way in which I got it to work:
    OracleDataSource data_source = new OracleDataSource();
    data_source.setDriverType( "thin" );
    data_source.setServerName( SERVER_NAME );
    data_source.setDatabaseName( DATABASE_NAME );
    data_source.setPortNumber( PORT );
    data_source.setUser( USER_ID );
    data_source.setPassword( PASSWORD );
    // test that the data source actually connects!
    data_source.getConnection().close();
            //>X SQLException
    // bind using a full URL
    context_.bind( "file:/root/tmp/jndi/test.ds", data_source );
            //>X NamingException
Both "fscontext.jar" and "providerutil.jar" need to be in the CLASSPATH. Also, before running the program, the path "C:\root\tmp\jndi" exists in my local hard disk, but it does NOT contain a file named "test.ds". After running the program there is a new file, ".bindings", in the path. This file contains a bunch of entries (strings) that describe the saved state of the "test.ds" object.