JSDOSession Management Model

To make use of this separation of concerns, you must create a JSDOSession object using the standalone function, getSession( ), and not login( ). Upon execution, getSession( ) performs the following actions:

• Creates an AuthenticationProvider object (of the progress.data.AuthenticationProvider class), which takes care of authenticating the user with the backend server
• Creates a JSDOSession object with the AuthenticationProvider object
• Executes the addCatalog( ) method to load one or more Data Service Catalogs to the JSDOSession object

Once getSession( ) is successfully executed, JSDO objects can be created.

getSession( ) – Sample Code
let session;
// Create a JSDOSession that is authenticated and has added a catalog via getSession()
progress.data.getSession({
    serviceURI: 'http://oemobiledemo.progress.com/OEMobileDemoServicesBasic/',
    catalogURI: 'http://oemobiledemo.progress.com/OEMobileDemoServicesBasic/static/CustomerService.json',
    authenticationModel: progress.data.Session.AUTH_TYPE_BASIC,
    username: user,
    password: pw
}).then((object) => {
    let jsdo;
    // We can verify that the JSDOSession is authorized by checking the
    // connected property
    console.log("JSDOSession status: " + object.jsdosession.connected);
    // Create a new JSDO now that we've got a session going
    jsdo =  new progress.data.JSDO("Customer");
    // Request data from the backend with a filter
    return jsdo.fill("CustNum < 11");
}).then((object) => {
    // We can verify that we succeeded because of the jsdo.success flag
    console.log("JSDO fill status: " + object.jsdo.success);
    // Print out the CustNum's and names of the object
    object.jsdo.ttCustomer.foreach((customer) => {
        console.log(customer.data.Custnum + ": " + customer.data.Name);
    });
});

To terminate a JSDOSession, use the invalidate( ) method instead of the logout( ) method. The logout( ) method logs the user out of the session but retains some data in memory. The invalidate( ) method not only terminates the user’s login session but also correctly removes all its data from memory as well as prevents the JSDOSession from being reused.

invalidate( ) – Sample Code
// Since we're done, we can clean up the JSDOSession via invalidate()
    session.invalidate().then((object) => {
    // We can verify that the JSDOSession is no longer valid via the connected flag
    console.log("JSDOSession status: " + object.jsdosession.connected);
});