WebDemo

Web Demo

Here is a demo for Cancel Order Artifact in html5 and es6.

Looks Like

• Idle Status

  

• After Click Once

  

  Here is a .gif version for the whole artifact:

  

• Lots of Messages

  

Apply New Business Rules

Cancel Order Business Rules

Here is the business rules of Cancel Order Artifact:

In JavaScript code, the business rules is defined in cancel-order.js:

function once() {
    let artifact = new Artifact();
    artifacts.push(artifact);
    artifact.id = ++artifactNum;
    writeWhiteBoard('#' + artifact.id + ' --- BEGIN ---\n');
    createOrderCancel(artifact);
}

function createOrderCancel(artifact) {
    writeWhiteBoard('#' + artifact.id + ' External SEND OrderCancel (External -> Order)\n');
    let orderCancel = new Message(external, order, artifact, () => {
        writeWhiteBoard('#' + artifact.id + ' Order GET OrderCancel (External -> Order)\n');
        createReshippingBack(artifact);
        createCancelPurchase(artifact);
        createCancelFulfillment(artifact);
    });
    artifact.msgs.push(orderCancel);
}

function createReshippingBack(artifact) {
    writeWhiteBoard('#' + artifact.id + ' Order SEND OrderCancel (Order -> External)\n');
    let reshippingBack = new Message(order, external, artifact, () => {
        writeWhiteBoard('#' + artifact.id + ' External GET OrderCancel (Order -> External)\n');
        createShippingBack(artifact);
    });
    artifact.msgs.push(reshippingBack);
}

function createShippingBack(artifact) {
    writeWhiteBoard('#' + artifact.id + ' External SEND ShippingBack (External -> Fulfillment)\n');
    let shippingBack = new Message(external, fulfillment, artifact, () => {
        writeWhiteBoard('#' + artifact.id + ' Fulfillment GET ShippingBack (External -> Fulfillment)\n');
        artifact.isShippingBackGot = true;
        if (artifact.isCancelFulfillmentGot && artifact.isPurchaseUndoneGot && artifact.isShippingBackGot) {
            createShippingUndone(artifact);
        }
    });
    artifact.msgs.push(shippingBack);
}

...

function createCancelFulfillment(artifact) {
    writeWhiteBoard('#' + artifact.id + ' Order SEND CancelFulfillment (Order -> Fulfillment)\n');
    let cancelFulfillment = new Message(order, fulfillment, artifact, () => {
        writeWhiteBoard('#' + artifact.id + ' Fulfillment GET CancelFulfillment (Order -> Fulfillment)\n');
        artifact.isCancelFulfillmentGot = true;
        if (artifact.isCancelFulfillmentGot && artifact.isPurchaseUndoneGot && artifact.isShippingBackGot) {
            createShippingUndone(artifact);
        }
    });
    artifact.msgs.push(cancelFulfillment);
}

How to Apply

• Function Once

  Once defines the entrance of each Artifact. Namely, once need to call the function of the beginning message. Like this:

  function once() {
      let artifact = new Artifact();
      artifacts.push(artifact);
      artifact.id = ++artifactNum;
      writeWhiteBoard('#' + artifact.id + ' --- BEGIN ---\n');
      createOrderCancel(artifact); // Here calls the function of OrderCancel.
  }

  When apply the new artifact on the web demo, you need change the function called:

   function once() {
       let artifact = new Artifact();
       artifacts.push(artifact);
       artifact.id = ++artifactNum;
       writeWhiteBoard('#' + artifact.id + ' --- BEGIN ---\n');
  -    createOrderCancel(artifact); // Here calls the function of OrderCancel.
  +    createAnotherMessage(artifact); // Here calls the function you need.
   }

• Functions for Messages

  For each message, we need a function to create/handle it.

  We also need to store the business rule of each message in the function.

  Here is the basic template:

  function createSomeMessagae(artifact) {
      let someMessage = new Message(from_entity, to_entity, artifact, callbackFunction);
      artifact.msgs.push(someMessage);
  }

  What you need to modify is

  • from_entity, to_entity

    it `elem` [external, order, payment, purchase, fulfillment]

  • callbackFunction

    1. After the the message reach to_entity, callbackFunction will be called. The business rule is stored here.
    2. Because artifact is a javascript object, you can store data for complex business rules in it.

  Here is an example:

  function createShippingBack(artifact) {
      writeWhiteBoard('#' + artifact.id + ' External SEND ShippingBack (External -> Fulfillment)\n'); // writeWhiteBoard is an util function for white board.
      let shippingBack = new Message(external, fulfillment, artifact, () => {
          writeWhiteBoard('#' + artifact.id + ' Fulfillment GET ShippingBack (External -> Fulfillment)\n');
          artifact.isShippingBackGot = true;
          if (artifact.isCancelFulfillmentGot && artifact.isPurchaseUndoneGot && artifact.isShippingBackGot) {
              createShippingUndone(artifact);
          }
      });
      artifact.msgs.push(shippingBack);
  }